The goal of this release is to give users an early preview of the new language features, and to collect feedback primarily about bugs and usability issues related to the language itself, while the Terraform team addresses the remaining problems. There will be at least one beta and at least one release candidate before final, which should give a more complete impression of how the final v0.12.0 release will behave.
The following list contains the most important incompatibillities and notes relative to v0.11.8, but may be incomplete. This alpha release is offered for experimentation purposes only and should not be used to manage real infrastructure. A more complete upgrade guide will be prepared in time for the final v0.12.0 release.
* This release includes a revamped implementation of the configuration language that aims to address a wide array of feedback and known issues with the configuration language handling in prior versions. In order to resolve some ambiguities in the language, the new parser is stricter in some ways about following what was previously just idiomatic usage, and so some unusual constructs will need to be adjusted to be accepted by the new parser.
The v0.12.0 final release will include a more complete language upgrade guide and a tool that can recognize and automatically upgrade common patterns for the new parser and new idiomatic forms.
* This release introduces new wire protocols for provider and provisioner plugins and a new automatic installation method for provider plugins. At the time of release there are no official plugin releases compatible with these new protocols and so automatic provider installation with `terraform init` is not functional. Instead, the v0.12.0-alpha1 distribution archives contain bundled experimental provider builds for use with the alpha.
* This release introduces new file formats for persisted Terraform state (both on local disk and in remote backends) and for saved plan files. Third-party tools that attempt to parse these files will need to be updated to work with the formats generated by v0.12 releases. Prior to v0.12.0 we will add a new command to obtain a JSON representation of a saved plan intended for outside consumption, but this command is not yet present in v0.12.0-alpha1.
*`terraform validate` now has a smaller scope than before, focusing only on configuration syntax and value type checking. This makes it safe to run e.g. on save in a text editor.
The overall theme for the v0.12 release is configuration language fixes and improvements. The fixes and improvements are too numerous to list out exhaustively, but the list below covers some highlights:
* **First-class expressions:** Prior to v0.12, expressions could be used only via string interpolation, like `"${var.foo}"`. Expressions are now fully integrated into the language, allowing them to be used directly as argument values, like `ami = var.ami`.
* **`for` expressions:** This new expression construct allows the construction of a list or map by transforming and filtering elements from another list or map. For more information, refer to [the _`for` expressions_ documentation](./website/docs/configuration/expressions.html.md#for-expressions).
* **Dynamic configuration blocks:** For nested configuration blocks accepted as part of a resource configuration, it is now possible to dynamically generate zero or more blocks corresponding to items in a list or map using the special new `dynamic` block construct. This is the official replacement for the common (but buggy) unofficial workaround of treating a block type name as if it were an attribute expecting a list of maps value, which worked occasionally before as a result of some unintended coincidences in the implementation.
* **Generalised "splat" operator:** The `aws_instance.foo.*.id` syntax was previously a special case only for resources with `count` set. It is now an operator within the expression language that can be applied to any list value. There is also an optional new splat variant that allows both index and attribute access operations on each item in the list. For more information, refer to [the _Splat Expressions_ documentation](./website/docs/configuration/expressions.html.md#splat-expressions).
* **Nullable argument values:** It is now possible to use a conditional expression like `var.foo != "" ? var.foo : null` to conditionally leave an argument value unset, whereas before Terraform required the configuration author to provide a specific default value in this case. Assigning `null` to an argument is equivalent to omitting that argument entirely.
* **Rich types in module inputs variables and output values:** Terraform v0.7 added support for returning flat lists and maps of strings, but this is now generalized to allow returning arbitrary nested data structures with mixed types. Module authors can specify a precise expected type for each input variable to allow early validation of caller values.
* **Resource and module object values:** An entire resource or module can now be treated as an object value within expressions, including passing them through input variables and output values to other modules, using an attribute-less reference syntax, like `aws_instance.foo`.
* **Extended template syntax:** The simple interpolation syntax from prior versions is extended to become a simple template language, with support for conditional interpolations and repeated interpolations through iteration. For more information, see [the _String Templates_ documentation](./website/docs/configuration/expressions.html.md#string-templates).
* **`jsondecode` and `csvdecode` interpolation functions:** Due to the richer type system in the new configuration language implementation, we can now offer functions for decoding serialization formats. `jsondecode` is the opposite of `jsonencode`, while `csvdecode` provides a way to load in lists of maps from a compact tabular representation.
*`terraform validate` now accepts an argument `-json` which produces machine-readable output. Please refer to the documentation for this command for details on the format and some caveats that consumers must consider when using this interface. [GH-17539]
* The JSON-based variant of the Terraform language now has a more tightly-specified and reliable mapping to the native syntax variant. In prior versions, certain Terraform configuration features did not function as expected or were not usable via the JSON-based forms. For more information, see [the _JSON Configuration Syntax_ documentation](./website/docs/configuration/syntax-json.html.md).
BUG FIXES:
* The conditional operator `... ? ... : ...` now works with result values of any type and only returns evaluation errors for the chosen result expression, as those familiar with this operator in other languages might expect.
KNOWN ISSUES:
Since v0.12.0-alpha1 is an experimental build, this list is certainly incomplete. Please let us know via GitHub issues if you run into a problem not covered here!
* As noted above, the alpha1 release is bundled with its own special builds of a subset of providers because there are not yet any official upstream releases of providers that are compatible with the new v0.12 provider plugin protocol. Automatic installation of providers with `terraform init` is therefore not functional at the time of release of alpha1.
Provider developers may wish to try building their plugins against the v0.12-alpha1 tag of Terraform Core to use them with this build. We cannot yet promise that all providers will be buildable in this way and that they will work flawlessly after building. Official releases of all HashiCorp-hosted providers compatible with v0.12 will follow at some point before v0.12.0 final.
* For providers that have required configuration arguments that can be set using environment variables, such as `AWS_REGION` in the `aws` provider, the detection of these environment variables is currently happening too "late" and so Terraform will prompt for these to be entered interactively or generate incorrect error messages saying that they are not set. To work around this, set these arguments inline within the configuration block. In most cases this _does not_ apply to arguments related to API credentials, since most providers declare these ones as optional and then handle the environment variables directly in their own code. The environment variable defaults will be restored before final release.
* There are several error messages in Terraform Core that claim that a problem is caused by a bug in the provider and ask for an issue to be filed against that provider's repository. For this alpha release, we ask that users disregard this advice and report such problems instead within the Terraform Core repository, since they are more likely to be problems with the new protocol version bridge code that is included in the plugin SDK.
* Some secondary Terraform CLI subcommands are not yet updated for this release and will return errors or produce partial results. Please focus most testing and experimentation with this release on the core workflow commands `terraform init`, `terraform validate`, `terraform plan`, `terraform apply`, and `terraform destroy`.
In addition to the high-level known issues above, please refer also to [the GitHub issues for this alpha release](https://github.com/hashicorp/terraform/issues?utf8=%E2%9C%93&q=is%3Aissue+label%3Av0.12-alpha1+). This list will be updated with new reports throughout the alpha1 period, including workarounds where possible to allow for continued testing. (Issues shown in that list as closed indicate that the problem has been fixed for a future release; it is probably still present in the alpha1 release.)
* provisioner/chef: Use user:group chown syntax ([#18533](https://github.com/hashicorp/terraform/issues/18533))
* helper/resource: Add `ParallelTest()` to allow opt-in acceptance testing concurrency with `t.Parallel()` ([#18688](https://github.com/hashicorp/terraform/issues/18688))
* backend/manta: Deprecate the `objectName` attribute in favor of the new `object_name` attribute ([#18759](https://github.com/hashicorp/terraform/issues/18759))
* backend/migrations: Migrate existing non-empty default states when the backend only supports named states ([#18760](https://github.com/hashicorp/terraform/issues/18760))
* provider/terraform: `terraform_remote_state` now accepts complex backend configurations ([#18759](https://github.com/hashicorp/terraform/issues/18759))
* backend/remote: Implement the state.Locker interface to support state locking ([#18826](https://github.com/hashicorp/terraform/issues/18826))
* backend/remote: Add initial support for the apply command ([#18950](https://github.com/hashicorp/terraform/issues/18950))
* backend/remote: Ask to cancel pending remote operations when Ctrl-C is pressed ([#18979](https://github.com/hashicorp/terraform/issues/18979))
* backend/remote: Add support for the `-no-color` command line flag ([#19002](https://github.com/hashicorp/terraform/issues/19002))
* backend/remote: Prevent running plan or apply without permissions ([#19012](https://github.com/hashicorp/terraform/issues/19012))
* backend/remote: Add checks for all flags we currently don’t support ([#19013](https://github.com/hashicorp/terraform/issues/19013))
* backend/migrations: Check all workspaces for existing non-empty states ([#18757](https://github.com/hashicorp/terraform/issues/18757))
* provider/terraform: Always call the backend validation method to prevent a possible panic ([#18759](https://github.com/hashicorp/terraform/issues/18759))
* backend/remote: Take working directories (optional on workspaces) into account ([#18773](https://github.com/hashicorp/terraform/issues/18773))
* backend/remote: Use pagination when retrieving states (workspaces) ([#18817](https://github.com/hashicorp/terraform/issues/18817))
* backend/remote: Add the run ID to associate state when being used in TFE ([#18818](https://github.com/hashicorp/terraform/issues/18818))
* core: Make sure the state is locked before it is used when `(un)tainting` ([#18894](https://github.com/hashicorp/terraform/issues/18894))
* **New `remote` backend**: Inital release of the `remote` backend for use with Terraform Enterprise and Private Terraform Enterprise [[#18596](https://github.com/hashicorp/terraform/issues/18596)]
* cli: display workspace name in apply and destroy commands if not default ([#18253](https://github.com/hashicorp/terraform/issues/18253))
* cli: Remove error on empty outputs when `-json` is set ([#11721](https://github.com/hashicorp/terraform/issues/11721))
* helper/schema: Resources have a new `DeprecationMessage` property that can be set to a string, allowing full resources to be deprecated ([#18286](https://github.com/hashicorp/terraform/issues/18286))
* backend/s3: Allow fallback to session-derived credentials (e.g. session via `AWS_PROFILE` environment variable and shared configuration) ([#17901](https://github.com/hashicorp/terraform/issues/17901))
* backend/s3: Allow usage of `AWS_EC2_METADATA_DISABLED` environment variable ([#17901](https://github.com/hashicorp/terraform/issues/17901))
* config: The `rsadecrypt` interpolation function will no longer include the private key in an error message if it cannot be processed. ([#18333](https://github.com/hashicorp/terraform/issues/18333))
* provisioner/habitat: add missing space for service url ([#18400](https://github.com/hashicorp/terraform/issues/18400))
* cli: Don't allow -target without arguments ([#16360](https://github.com/hashicorp/terraform/issues/16360))
* cli: Fix strange formatting of list and map values in the `terraform console` command ([#17714](https://github.com/hashicorp/terraform/issues/17714))
* core: Don't evaluate unused outputs during a full destroy operation ([#17768](https://github.com/hashicorp/terraform/issues/17768))
* core: Fix local and output evaluation when they reference a resource being scaled down to 0 ([#17765](https://github.com/hashicorp/terraform/issues/17765))
* connection/ssh: Retry on authentication failures when the remote service is available before it is completely configured ([#17744](https://github.com/hashicorp/terraform/issues/17744))
* connection/winrm: Get execution errors from winrm commands ([#17788](https://github.com/hashicorp/terraform/issues/17788))
* connection/winrm: Support NTLM authentication ([#17748](https://github.com/hashicorp/terraform/issues/17748))
* provisioner/chef: Fix regression causing connection to be prematurely closed ([#17609](https://github.com/hashicorp/terraform/pull/17609))
* provisioner/habitat: Set channel and builder URL during install, and enable service before start ([#17403](https://github.com/hashicorp/terraform/issues/17403)) ([#17781](https://github.com/hashicorp/terraform/issues/17781))
* helper/schema: Attribute value is no longer included in error message when `ConflictsWith` keys are used together. ([#17738](https://github.com/hashicorp/terraform/issues/17738))
* core: Fix the timeout handling for provisioners ([#17646](https://github.com/hashicorp/terraform/issues/17646))
* core: Ensure that state is unlocked after running console, import, graph or push commands ([#17645](https://github.com/hashicorp/terraform/issues/17645))
* core: Don't open multiple file descriptors for local state files, which would cause reading the state to fail on Windows ([#17636](https://github.com/hashicorp/terraform/issues/17636))
* cli: `terraform state list` now accepts a new argument `-id=...` for filtering resources for display by their remote ids ([#17221](https://github.com/hashicorp/terraform/issues/17221))
* cli: `terraform destroy` now uses the option `-auto-approve` instead of `-force`, for consistency with `terraform apply`. The old flag is preserved for backward-compatibility, but is now deprecated; it will be retained for at least one major release. ([#17218](https://github.com/hashicorp/terraform/issues/17218))
* general: https URLs are now supported in the HTTP_PROXY environment variable for URLs interpreted by Terraform Core. (This will not immediately be true for all Terraform provider plugins, since each must upgrade its own HTTP client.) [go1.10:net/http](https://golang.org/doc/go1.10#net/http)
* core: Make sure state is locked during initial refresh ([#17422](https://github.com/hashicorp/terraform/issues/17422))
* core: Halt on fatal provisioner errors, rather than retrying until a timeout ([#17359](https://github.com/hashicorp/terraform/issues/17359))
* core: When handling a forced exit due to multiple interrupts, prevent the process from exiting while the state is being written ([#17323](https://github.com/hashicorp/terraform/issues/17323))
* core: Fix handling of locals and outputs at destroy time ([#17241](https://github.com/hashicorp/terraform/issues/17241))
* core: Fix regression in handling of `count` arguments that refer to `count` attributes from other resources ([#17548](https://github.com/hashicorp/terraform/issues/17548))
* provider/terraform: restore support for the deprecated `environment` argument to the `terraform_remote_state` data source ([#17545](https://github.com/hashicorp/terraform/issues/17545))
* backend/gcs: Report the correct lock ID for GCS state locks ([#17397](https://github.com/hashicorp/terraform/issues/17397))
* helper/schema: Prevent crash on removal of computed field in CustomizeDiff ([#17261](https://github.com/hashicorp/terraform/issues/17261))
* helper/schema: Allow ResourceDiff.ForceNew on nested fields (avoid crash) ([#17463](https://github.com/hashicorp/terraform/issues/17463))
* helper/schema: Allow `TypeMap` to have a `*schema.Schema` as its `Elem`, for consistency with `TypeSet` and `TypeList` ([#17097](https://github.com/hashicorp/terraform/issues/17097))
* helper/validation: Add ValidateRFC3339TimeString function ([#17484](https://github.com/hashicorp/terraform/issues/17484))
* core: fix crash when an error is encountered during refresh ([#17076](https://github.com/hashicorp/terraform/issues/17076))
* config: fixed crash when module source is invalid ([#17134](https://github.com/hashicorp/terraform/issues/17134))
* config: allow the count pseudo-attribute of a resource to be interpolated into `provisioner` and `connection` blocks without errors ([#17133](https://github.com/hashicorp/terraform/issues/17133))
* backend/s3: allow the workspace name to be a prefix of workspace_key_prefix ([#17086](https://github.com/hashicorp/terraform/issues/17086))
* provisioner/chef: fix crash when validating `use_policyfile` ([#17147](https://github.com/hashicorp/terraform/issues/17147))
* backend/gcs: The gcs remote state backend was erroneously creating the state bucket if it didn't exist. This is not the intended behavior of backends, as Terraform cannot track or manage that resource. The target bucket must now be created separately, before using it with Terraform. ([#16865](https://github.com/hashicorp/terraform/issues/16865))
* core: removed duplicate prompts and clarified working when migration backend configurations ([#16939](https://github.com/hashicorp/terraform/issues/16939))
* config: new `rsadecrypt` interpolation function allows decrypting a base64-encoded ciphertext using a given private key. This is particularly useful for decrypting the password for a Windows instance on AWS EC2, but is generic and may find other uses too. ([#16647](https://github.com/hashicorp/terraform/issues/16647))
* config: new `timeadd` interpolation function allows calculating a new timestamp relative to an existing known timestamp. ([#16644](https://github.com/hashicorp/terraform/issues/16644))
* cli: Passing an empty string to `-plugin-dir` during init will remove previously saved paths ([#16969](https://github.com/hashicorp/terraform/issues/16969))
* cli: Module and provider installation (and some other Terraform features) now implement [RFC6555](https://tools.ietf.org/html/rfc6555) when making outgoing HTTP requests, which should improve installation reliability for dual-stack (both IPv4 and IPv6) hosts running on networks that have non-performant or broken IPv6 Internet connectivity by trying both IPv4 and IPv6 connections. ([#16805](https://github.com/hashicorp/terraform/issues/16805))
* backend/s3: it is now possible to disable the region check, for improved compatibility with third-party services that attempt to mimic the S3 API. ([#16757](https://github.com/hashicorp/terraform/issues/16757))
* backend/s3: it is now possible to for the path-based S3 API form, for improved compatibility with third-party services that attempt to mimic the S3 API. ([#17001](https://github.com/hashicorp/terraform/issues/17001))
* backend/s3: it is now possible to use named credentials from the `~/.aws/credentials` file, similarly to the AWS plugin ([#16661](https://github.com/hashicorp/terraform/issues/16661))
* backend/manta: support for Triton RBAC ([#17003](https://github.com/hashicorp/terraform/issues/17003))
* backend/gcs: support for customer-supplied encryption keys for remote state buckets ([#16936](https://github.com/hashicorp/terraform/issues/16936))
* provider/terraform: in `terraform_remote_state`, the argument `environment` is now deprecated in favor of `workspace`. The `environment` argument will be removed in a later Terraform release. ([#16558](https://github.com/hashicorp/terraform/issues/16558))
* config: fixed crash in `substr` interpolation function with invalid offset ([#17043](https://github.com/hashicorp/terraform/issues/17043))
* config: Referencing a count attribute in an output no longer generates a warning ([#16866](https://github.com/hashicorp/terraform/issues/16866))
* cli: Terraform will no longer crash when `terraform plan`, `terraform apply`, and some other commands encounter an invalid provider version constraint in configuration, generating a proper error message instead. ([#16867](https://github.com/hashicorp/terraform/issues/16867))
* backend/gcs: The usage of the GOOGLE_CREDENTIALS environment variable now matches that of the google provider ([#16865](https://github.com/hashicorp/terraform/issues/16865))
* backend/gcs: fixed the locking methodology to avoid "double-locking" issues when used with the `terraform_remote_state` data source ([#16852](https://github.com/hashicorp/terraform/issues/16852))
* backend/s3: the `workspace_key_prefix` can now be an empty string or contain slashes ([#16932](https://github.com/hashicorp/terraform/issues/16932))
* provisioner/salt-masterless: now waits for all of the remote operations to complete before returning ([#16704](https://github.com/hashicorp/terraform/issues/16704))
* modules: Modules can now receive a specific provider configuration in the `providers` map, even if it's only implicitly used ([#16619](https://github.com/hashicorp/terraform/issues/16619))
* config: Terraform will now detect and warn about outputs containing potentially-problematic references to resources with `count` set where the references does not use the "splat" syntax. This identifies situations where an output may [reference a resource with `count = 0`](https://www.terraform.io/upgrade-guides/0-11.html#referencing-attributes-from-resources-with-count-0) even if the `count` expression does not _currently_ evaluate to `0`, allowing the bug to be detected and fixed _before_ the value is later changed to `0` and would thus become an error. **This usage will become a fatal error in Terraform 0.12**. ([#16735](https://github.com/hashicorp/terraform/issues/16735))
* core: A new environment variable `TF_WARN_OUTPUT_ERRORS=1` is supported to opt out of the behavior introduced in 0.11.0 where errors in output expressions halt execution. This restores the previous behavior where such errors are ignored, allowing users to apply problematic configurations without fixing all of the errors. This opt-out will be removed in Terraform 0.12, so it is strongly recommended to use the new warning described in the previous item to detect and fix these problematic expressions. ([#16782](https://github.com/hashicorp/terraform/issues/16782))
* cli: fix crash when subcommands with sub-subcommands are accidentally provided as a single argument, such as `terraform "workspace list"` ([#16789](https://github.com/hashicorp/terraform/issues/16789))
The following list combines the changes from 0.11.0-beta1 and 0.11.0-rc1 to give the full set of changes since 0.10.8. For details on each of the individual pre-releases, please see [the 0.11.0-rc1 CHANGELOG](https://github.com/hashicorp/terraform/blob/v0.11.0-rc1/CHANGELOG.md).
The following items give an overview of the incompatibilities and other noteworthy changes in this release. For more details on some of these changes, along with information on how to upgrade existing configurations where needed, see [the v0.11 upgrade guide](https://www.terraform.io/upgrade-guides/0-11.html).
* Output interpolation errors are now fatal. Module configs with unused outputs which contained errors will no longer be valid.
* Module configuration blocks have 2 new reserved attribute names, "providers" and "version". Modules using these as input variables will need to be updated.
* The module provider inheritance rules have changed. Inherited provider configurations will no longer be merged with local configurations, and additional (aliased) provider configurations must be explicitly passed between modules when shared. See [the upgrade guide](https://www.terraform.io/upgrade-guides/0-11.html) for more details.
* The command `terraform apply` with no explicit plan argument is now interactive by default. Specifically, it will show the generated plan and wait for confirmation before applying it, similar to the existing behavior of `terraform destroy`. The behavior is unchanged when a plan file argument is provided, and the previous behavior can be obtained _without_ a plan file by using the `-auto-approve` option.
* The `terraform` provider (that is, the provider that contains the `terraform_remote_state` data source) has been re-incorporated as a built-in provider in the Terraform Core executable. In 0.10 it was split into a separate plugin along with all of the other providers, but this provider uses several internal Terraform Core APIs and so in practice it's been confusing to version that separately from Terraform Core. As a consequence, this provider no longer supports version constraints, and so `version` attributes for this provider in configuration must be removed.
* When remote state is enabled, Terraform will no longer generate a local `terraform.tfstate.backup` file before updating remote state. Previously this file could potentially be used to recover a previous state to help recover after a mistake, but it also caused a potentially-sensitive state file to be generated in an unexpected location that may be inadvertently copied or checked in to version control. With this local backup now removed, we recommend instead relying on versioning or backup mechanisms provided by the backend, such as Amazon S3 versioning or Terraform Enterprise's built-in state history mechanism. (Terraform will still create the local file `errored.tfstate` in the unlikely event that there is an error when writing to the remote backend.)
* modules: Module configuration blocks now have a "version" attribute, to set a version constraint for modules sourced from a registry. ([#16466](https://github.com/hashicorp/terraform/issues/16466))
* modules: Module configuration blocks now have a "providers" attribute, to map a provider configuration from the current module into a submodule ([#16379](https://github.com/hashicorp/terraform/issues/16379))
* cli: The `terraform apply` command now waits for interactive approval of the generated plan before applying it, unless an explicit plan file is provided. ([#16502](https://github.com/hashicorp/terraform/issues/16502))
* cli: The `terraform version` command now prints out the version numbers of initialized plugins as well as the version of Terraform core, so that they can be more easily shared when opening GitHub Issues, etc. ([#16439](https://github.com/hashicorp/terraform/issues/16439))
* cli: A new `TF_DATA_DIR` environment variable can be used to override the location where Terraform stores the files normally placed in the `.terraform` directory. ([#16207](https://github.com/hashicorp/terraform/issues/16207))
* provider/terraform: now built in to Terraform Core so that it will always have the same backend functionality as the Terraform release it corresponds to. ([#16543](https://github.com/hashicorp/terraform/issues/16543))
* config: Provider config in submodules will no longer be overridden by parent providers with the same name. ([#16379](https://github.com/hashicorp/terraform/issues/16379))
* cli: When remote state is enabled, Terraform will no longer generate a local `terraform.tfstate.backup` file before updating remote state. ([#16464](https://github.com/hashicorp/terraform/issues/16464))
* core: state now includes a reference to the provider configuration most recently used to create or update a resource, so that the same configuration can be used to destroy that resource if its configuration (including the explicit pointer to a provider configuration) is removed ([#16586](https://github.com/hashicorp/terraform/issues/16586))
* core: Module outputs can now produce errors, preventing them from silently propagating through the config. ([#16204](https://github.com/hashicorp/terraform/issues/16204))
* backend/gcs: will now automatically add a slash to the given prefix if not present, since without it the workspace enumeration does not function correctly ([#16585](https://github.com/hashicorp/terraform/issues/16585))
* **New `etcdv3` backend**, for use with the newer etcd api ([#15680](https://github.com/hashicorp/terraform/issues/15680))
* **New interpolation function `chunklist`**, for spliting a list into a list of lists with specified sublist chunk sizes. ([#15112](https://github.com/hashicorp/terraform/issues/15112))
* command/validate: Respect `-plugin-dir` overridden plugin paths in the `terraform validate` command. ([#15985](https://github.com/hashicorp/terraform/issues/15985))
* provisioner/chef: Clean clients from `chef-vault` when `recreate_client` enabled ([#16357](https://github.com/hashicorp/terraform/issues/16357))
* communicator/winrm: Support the `cacert` option for custom certificate authorities when provisioning over WinRM ([#14783](https://github.com/hashicorp/terraform/issues/14783))
* Provider plugins can now optionally be cached in a shared directory to avoid re-downloading them for each configuration working directory. For more information, see [the documentation](https://github.com/hashicorp/terraform/blob/34956cd12449cb77db3f55e3286cd369e8332eeb/website/docs/configuration/providers.html.md#provider-plugin-cache). ([#16000](https://github.com/hashicorp/terraform/issues/16000))
* config: New `abs` interpolation function, returning the absolute value of a number ([#16168](https://github.com/hashicorp/terraform/issues/16168))
* config: New `transpose` interpolation function, which swaps the keys and values in a map of lists of strings. ([#16192](https://github.com/hashicorp/terraform/issues/16192))
* cli: The Terraform CLI now supports tab-completion for commands and certain arguments for `bash` and `zsh` users. See [the tab-completion docs](https://github.com/hashicorp/terraform/blob/2c782e60fad78e6fc976d850162322608f074e57/website/docs/commands/index.html.markdown#shell-tab-completion) for information on how to enable it. ([#16176](https://github.com/hashicorp/terraform/issues/16176))
* cli: `terraform state rm` now includes in its output the count of resources that were removed from the state. ([#16137](https://github.com/hashicorp/terraform/issues/16137))
* modules: Update go-getter to fix crash when fetching invalid source subdir ([#16161](https://github.com/hashicorp/terraform/issues/16161))
* modules: Fix regression in the handling of modules sourcing other modules with relative paths ([#16160](https://github.com/hashicorp/terraform/issues/16160))
* core: Skip local value interpolation during destroy ([#16213](https://github.com/hashicorp/terraform/issues/16213))
* cli: `terraform import` now accepts an option `-allow-missing-config` that overrides the default requirement that a configuration block must already be present for the resource being imported. ([#15876](https://github.com/hashicorp/terraform/issues/15876))
* config: `indent` interpolation function appends spaces to all but the first line of a multi-line string ([#15311](https://github.com/hashicorp/terraform/issues/15311))
* cli: `terraform fmt` has a new option `-check` which makes it return a non-zero exit status if any formatting changes are required ([#15387](https://github.com/hashicorp/terraform/issues/15387))
* cli: When [running Terraform in automation](https://www.terraform.io/guides/running-terraform-in-automation.html), a new environment variable `TF_IN_AUTOMATION` can be used to disable or adjust certain prompts that would normally include specific CLI commands to run. This assumes that the wrapping automation tool is providing its own UI for guiding the user through the workflow, and thus the standard advice would be redundant and/or confusing. ([#16059](https://github.com/hashicorp/terraform/issues/16059))
* cli: restore the "(forces new resource)" annotations on attributes that were inadvertently disabled in 0.10.4. ([#16067](https://github.com/hashicorp/terraform/issues/16067))
* cli: fix regression with installing modules from git when the `GIT_SSH_COMMAND` environment variable is set ([#16099](https://github.com/hashicorp/terraform/issues/16099))
*`terraform apply` now uses the standard resource address syntax to refer to resources in its log ([#15884](https://github.com/hashicorp/terraform/issues/15884))
*`terraform plan` output has some minor adjustments to improve readability and accessibility for those who can't see its colors ([#15884](https://github.com/hashicorp/terraform/issues/15884))
* backend/consul: fix crash during consul backend initialization ([#15976](https://github.com/hashicorp/terraform/issues/15976))
* backend/azurerm: ensure that blob storage metadata is preserved when updating state blobs, to avoid losing track of lock metadata ([#16015](https://github.com/hashicorp/terraform/issues/16015))
* config: local values now work properly in resource `count` and in modules with more than one `.tf` file ([#15995](https://github.com/hashicorp/terraform/issues/15995)] [[#15982](https://github.com/hashicorp/terraform/issues/15982))
* cli: removed some inconsistencies in how data sources are counted and tallied in plan vs. apply and apply vs. destroy. In particular, data sources are no longer incorrectly counted as destroyed in `terraform destroy` ([#15884](https://github.com/hashicorp/terraform/issues/15884))
* **Local Values**: this new configuration language feature allows assigning a symbolic local name to an expression so it can be used multiple times in configuration without repetition. See [the documentation](https://github.com/hashicorp/terraform/blob/master/website/docs/configuration/locals.html.md) for how to define and use local values. ([#15449](https://github.com/hashicorp/terraform/issues/15449))
* **`base64gzip` interpolation function**: compresses a string with gzip and then base64-encodes the result ([#3858](https://github.com/hashicorp/terraform/issues/3858))
* **`flatten` interpolation function**: turns a list of lists, or list of lists of lists, etc into a flat list of primitive values ([#15278](https://github.com/hashicorp/terraform/issues/15278))
* **`urlencode` interpolation function**: applies standard URL encoding to a string so that it can be embedded in a URL without making it invalid and without any of the characters being interpreted as part of the URL structure ([#15871](https://github.com/hashicorp/terraform/issues/15871))
* **`salt-masterless` provisioner**: runs Salt in masterless mode on a target server ([#14720](https://github.com/hashicorp/terraform/issues/14720))
* config: The `jsonencode` interpolation function now accepts nested list and map structures, where before it would accept only strings, lists of strings, and maps of strings. ([#14884](https://github.com/hashicorp/terraform/issues/14884))
* cli: The "creation complete" (and similar) messages from `terraform apply` now include a total elapsed time for each operation. ([#15548](https://github.com/hashicorp/terraform/issues/15548))
* cli: Module installation (with either `terraform init` or `terraform get`) now detects and recursively initializes submodules when the source is a git repository. ([#15891](https://github.com/hashicorp/terraform/issues/15891))
* cli: Modules can now be installed from `.tar.xz` archives, in addition to the existing `.tar.gz`, `.tar.bz2` and `.zip`. ([#15891](https://github.com/hashicorp/terraform/issues/15891))
* provisioner/local-exec: now possible to specify a custom "interpreter", overriding the default of either `bash -c` (on Unix) or `cmd.exe /C` (on Windows) ([#15166](https://github.com/hashicorp/terraform/issues/15166))
* backend/consul: can now set the path to a specific CA certificate file, client certificate file, and client key file that will be used when configuring the underlying Consul client. ([#15405](https://github.com/hashicorp/terraform/issues/15405))
* backend/http: now has optional support for locking, with special support from the target server. Additionally, the update operation can now optionally be implemented via `PUT` rather than `POST`. ([#15793](https://github.com/hashicorp/terraform/issues/15793))
* cli: `terraform init` now verifies the required Terraform version from the root module config. Previously this was verified only on subsequent commands, after initialization. ([#15935](https://github.com/hashicorp/terraform/issues/15935))
* cli: `terraform validate` now consults `terraform.tfvars`, if present, to set variable values. This is now consistent with the behavior of other commands. ([#15938](https://github.com/hashicorp/terraform/issues/15938))
* Fix `terraform state rm` and `mv` commands to work correctly with remote state backends ([#15652](https://github.com/hashicorp/terraform/issues/15652))
* Fix errors when interpolations fail during input ([#15780](https://github.com/hashicorp/terraform/issues/15780))
* cli: Add a `-from-module` flag to `terraform init` to re-introduce the legacy `terraform init` behavior of fetching a module. ([#15666](https://github.com/hashicorp/terraform/issues/15666))
* backend/s3: Add `workspace_key_prefix` to allow a user-configurable prefix for workspaces in the S3 Backend. ([#15370](https://github.com/hashicorp/terraform/issues/15370))
* cli: `terraform apply` now has an option `-auto-approve=false` that produces an interactive prompt to approve the generated plan. This will become the default workflow in a future Terraform version. ([#7251](https://github.com/hashicorp/terraform/issues/7251))
* cli: `terraform workspace show` command prints the current workspace name in a way that's more convenient for processing in wrapper scripts. ([#15157](https://github.com/hashicorp/terraform/issues/15157))
* cli: `terraform state rm` will now generate an error if no arguments are passed, whereas before it treated it as an open resource address selecting _all_ resources ([#15283](https://github.com/hashicorp/terraform/issues/15283))
* cli: Files in the config directory ending in `.auto.tfvars` are now loaded automatically (in lexicographical order) in addition to the single `terraform.tfvars` file that auto-loaded previously. ([#13306](https://github.com/hashicorp/terraform/issues/13306))
* Providers no longer in the main Terraform distribution; installed automatically by init instead ([#15208](https://github.com/hashicorp/terraform/issues/15208))
* cli: `terraform env` command renamed to `terraform workspace` ([#14952](https://github.com/hashicorp/terraform/issues/14952))
* cli: `terraform init` command now has `-upgrade` option to download the latest versions (within specified constraints) of modules and provider plugins.
* cli: The `-target` option to various Terraform operation can now target resources in descendent modules. ([#15314](https://github.com/hashicorp/terraform/issues/15314))
* cli: Minor updates to `terraform plan` output: use standard resource address syntax, more visually-distinct `-/+` actions, and more ([#15362](https://github.com/hashicorp/terraform/issues/15362))
* config: New interpolation function `contains`, to find if a given string exists in a list of strings. ([#15322](https://github.com/hashicorp/terraform/issues/15322))
* Don't show a message about the path to the state file if the state is remote ([#15435](https://github.com/hashicorp/terraform/issues/15435))
* Fix crash when `terraform graph` is run with no configuration ([#15588](https://github.com/hashicorp/terraform/issues/15588))
* Handle correctly the `.exe` suffix on locally-compiled provider plugins on Windows systems. ([#15587](https://github.com/hashicorp/terraform/issues/15587))
* config: Fixed a parsing issue in the interpolation language HIL that was causing misinterpretation of literal strings ending with escaped backslashes ([#15415](https://github.com/hashicorp/terraform/issues/15415))
* core: the S3 Backend was failing to remove the state file checksums from DynamoDB when deleting a workspace ([#15383](https://github.com/hashicorp/terraform/issues/15383))
* core: Improved reslience against crashes for a certain kind of inconsistency in the representation of list values in state. ([#15390](https://github.com/hashicorp/terraform/issues/15390))
* core: Display correct to and from backends in copy message when migrating to new remote state ([#15318](https://github.com/hashicorp/terraform/issues/15318))
* core: Fix a regression from 0.9.6 that was causing the tally of resources to create to be double-counted sometimes in the plan output ([#15344](https://github.com/hashicorp/terraform/issues/15344))
* cli: the state `rm` and `mv` commands were always loading a state from a Backend, and ignoring the `-state` flag ([#15388](https://github.com/hashicorp/terraform/issues/15388))
* cli: certain prompts in `terraform init` were respecting `-input=false` but not the `TF_INPUT` environment variable ([#15391](https://github.com/hashicorp/terraform/issues/15391))
* state: Further work, building on [#15423](https://github.com/hashicorp/terraform/issues/15423), to improve the internal design of the state managers to make this code more maintainable and reduce the risk of regressions; this may lead to slight changes to the number of times Terraform writes to remote state and how the serial is implemented with respect to those writes, which does not affect outward functionality but is worth noting if you log or inspect state updates for debugging purposes.
* config: Interpolation function `cidrhost` was not correctly calcluating host addresses under IPv6 CIDR prefixes ([#15321](https://github.com/hashicorp/terraform/issues/15321))
* provisioner/chef: Prevent a panic while trying to read the connection info ([#15271](https://github.com/hashicorp/terraform/issues/15271))
* provisioner/file: Refactor the provisioner validation function to prevent false positives ([#15273](https://github.com/hashicorp/terraform/issues/15273))
INTERNAL CHANGES:
* helper/schema: Actively disallow reserved field names in schema ([#15522](https://github.com/hashicorp/terraform/issues/15522))
* helper/schema: Force field names to be alphanum lowercase + underscores ([#15562](https://github.com/hashicorp/terraform/issues/15562))
* cli: Add a `-from-module` flag to `terraform init` to re-introduce the legacy `terraform init` behavior of fetching a module. ([#15666](https://github.com/hashicorp/terraform/issues/15666))
* Don't show a message about the path to the state file if the state is remote ([#15435](https://github.com/hashicorp/terraform/issues/15435))
* Fix crash when `terraform graph` is run with no configuration ([#15588](https://github.com/hashicorp/terraform/issues/15588))
* Handle correctly the `.exe` suffix on locally-compiled provider plugins on Windows systems. ([#15587](https://github.com/hashicorp/terraform/issues/15587))
* A new flag `-auto-approve` has been added to `terraform apply`. This flag controls whether an interactive approval is applied before making the changes in the plan. For now this flag defaults to `true` to preserve previous behavior, but this will become the new default in a future version. We suggest that anyone running `terraform apply` in wrapper scripts or automation refer to the upgrade guide to learn how to prepare such wrapper scripts for the later breaking change.
*`terraform state rm` now requires at least one argument. Previously, calling it with no arguments would remove all resources from state, which is consistent with the other `terraform state` commands but unlikely enough that we considered it better to be inconsistent here to reduce the risk of accidentally destroying the state.
* backend/s3: Add `workspace_key_prefix` to allow a user-configurable prefix for workspaces in the S3 Backend. ([#15370](https://github.com/hashicorp/terraform/issues/15370))
* cli: `terraform apply` now has an option `-auto-approve=false` that produces an interactive prompt to approve the generated plan. This will become the default workflow in a future Terraform version. ([#7251](https://github.com/hashicorp/terraform/issues/7251))
* cli: `terraform workspace show` command prints the current workspace name in a way that's more convenient for processing in wrapper scripts. ([#15157](https://github.com/hashicorp/terraform/issues/15157))
* cli: `terraform state rm` will now generate an error if no arguments are passed, whereas before it treated it as an open resource address selecting _all_ resources ([#15283](https://github.com/hashicorp/terraform/issues/15283))
* cli: Files in the config directory ending in `.auto.tfvars` are now loaded automatically (in lexicographical order) in addition to the single `terraform.tfvars` file that auto-loaded previously. ([#13306](https://github.com/hashicorp/terraform/issues/13306))
* config: Fixed a parsing issue in the interpolation language HIL that was causing misinterpretation of literal strings ending with escaped backslashes ([#15415](https://github.com/hashicorp/terraform/issues/15415))
* core: the S3 Backend was failing to remove the state file checksums from DynamoDB when deleting a workspace ([#15383](https://github.com/hashicorp/terraform/issues/15383))
* core: Improved reslience against crashes for a certain kind of inconsistency in the representation of list values in state. ([#15390](https://github.com/hashicorp/terraform/issues/15390))
* core: Display correct to and from backends in copy message when migrating to new remote state ([#15318](https://github.com/hashicorp/terraform/issues/15318))
* core: Fix a regression from 0.9.6 that was causing the tally of resources to create to be double-counted sometimes in the plan output ([#15344](https://github.com/hashicorp/terraform/issues/15344))
* cli: the state `rm` and `mv` commands were always loading a state from a Backend, and ignoring the `-state` flag ([#15388](https://github.com/hashicorp/terraform/issues/15388))
* cli: certain prompts in `terraform init` were respecting `-input=false` but not the `TF_INPUT` environment variable ([#15391](https://github.com/hashicorp/terraform/issues/15391))
* state: Further work, building on [#15423](https://github.com/hashicorp/terraform/issues/15423), to improve the internal design of the state managers to make this code more maintainable and reduce the risk of regressions; this may lead to slight changes to the number of times Terraform writes to remote state and how the serial is implemented with respect to those writes, which does not affect outward functionality but is worth noting if you log or inspect state updates for debugging purposes.
* Providers no longer in the main Terraform distribution; installed automatically by init instead ([#15208](https://github.com/hashicorp/terraform/issues/15208))
* cli: `terraform env` command renamed to `terraform workspace` ([#14952](https://github.com/hashicorp/terraform/issues/14952))
* cli: `terraform init` command now has `-upgrade` option to download the latest versions (within specified constraints) of modules and provider plugins.
* cli: The `-target` option to various Terraform operation can now target resources in descendent modules. ([#15314](https://github.com/hashicorp/terraform/issues/15314))
* cli: Minor updates to `terraform plan` output: use standard resource address syntax, more visually-distinct `-/+` actions, and more ([#15362](https://github.com/hashicorp/terraform/issues/15362))
* config: New interpolation function `contains`, to find if a given string exists in a list of strings. ([#15322](https://github.com/hashicorp/terraform/issues/15322))
* config: Interpolation function `cidrhost` was not correctly calcluating host addresses under IPv6 CIDR prefixes ([#15321](https://github.com/hashicorp/terraform/issues/15321))
* provisioner/chef: Prevent a panic while trying to read the connection info ([#15271](https://github.com/hashicorp/terraform/issues/15271))
* provisioner/file: Refactor the provisioner validation function to prevent false positives ([#15273](https://github.com/hashicorp/terraform/issues/15273))
* core: Hotfix for issue where a state from a plan was reported as not equal to the same state stored to a backend. This arose from the fix for the previous issue where the incorrect copy of the state was being used when applying with a plan. ([#15460](https://github.com/hashicorp/terraform/issues/15460))
* core: Hotfix for issue where state index wasn't getting properly incremented when applying a change containing only data source updates and/or resource drift. (That is, state changes made during refresh.)
This issue is significant only for the "atlas" backend, since that backend verifies on the server that state serial numbers are being used consistently. ([#15423](https://github.com/hashicorp/terraform/issues/15423))
* provisioner/file: Refactor the provisioner validation function to prevent false positives ([#15273](https://github.com/hashicorp/terraform/issues/15273)))
* provisioner/chef: Prevent a panic while trying to read the connection info ([#15271](https://github.com/hashicorp/terraform/issues/15271)))
* The 0.9.7 release had a bug with its new feature of periodically persisting state to the backend during an apply, as part of [[#14834](https://github.com/hashicorp/terraform/issues/14834)]. This change has been reverted in this release and will be re-introduced at a later time once it has been made to work properly.
* provider/google: `network` argument in `google_compute_instance_group` is now optional ([#13493](https://github.com/hashicorp/terraform/issues/13493))
* provider/google: Add support for `draining_timeout_sec` to `google_compute_backend_service`. ([#14559](https://github.com/hashicorp/terraform/issues/14559))
* The `lock_table` attribute in the S3 backend configuration has been deprecated in favor of `dynamodb_table`, which better reflects that the table is no longer only used for locks. ([#14949](https://github.com/hashicorp/terraform/issues/14949))
* backend/consul: Storing state to Consul now uses Check-And-Set (CAS) by default to avoid inconsistent state, and will automatically attempt to re-acquire a lock if it is lost during Terraform execution. ([#14930](https://github.com/hashicorp/terraform/issues/14930))
* core: Remote state is now persisted more frequently to minimize data loss in the event of a crash. ([#14834](https://github.com/hashicorp/terraform/issues/14834))
* provider/alicloud: Add the function of replacing ecs instance's system disk ([#15048](https://github.com/hashicorp/terraform/issues/15048))
* provider/aws: Expose RDS instance and cluster resource id ([#14882](https://github.com/hashicorp/terraform/issues/14882))
* provider/aws: Fix misleading error in aws_route validation ([#14972](https://github.com/hashicorp/terraform/issues/14972))
* provider/aws: Support import of aws_lambda_event_source_mapping ([#14898](https://github.com/hashicorp/terraform/issues/14898))
* provider/aws: Add support for a configurable timeout in db_option_group ([#15023](https://github.com/hashicorp/terraform/issues/15023))
* provider/aws: Add task_parameters parameter to aws_ssm_maintenance_window_task resource ([#15104](https://github.com/hashicorp/terraform/issues/15104))
* provider/aws: Expose reason of EMR cluster termination ([#15117](https://github.com/hashicorp/terraform/issues/15117))
* provider/aws: `data.aws_acm_certificate` can now filter by `type` ([#15063](https://github.com/hashicorp/terraform/issues/15063))
* provider/azurerm: Ignore case sensivity in Azurerm resource enums ([#14861](https://github.com/hashicorp/terraform/issues/14861))
* provider/digitalocean: Add support for changing TTL on DigitalOcean domain records. ([#14805](https://github.com/hashicorp/terraform/issues/14805))
* provider/google: Add ability to import Google Compute persistent disks ([#14573](https://github.com/hashicorp/terraform/issues/14573))
* provider/google: `google_container_cluster.master_auth` should be optional ([#14630](https://github.com/hashicorp/terraform/issues/14630))
* provider/google: Add CORS support for `google_storage_bucket` ([#14695](https://github.com/hashicorp/terraform/issues/14695))
* provider/google: Allow resizing of Google Cloud persistent disks ([#15077](https://github.com/hashicorp/terraform/issues/15077))
* provider/google: Add private_ip_google_access update support to google_compute_subnetwork ([#15125](https://github.com/hashicorp/terraform/issues/15125))
* provider/heroku: can now import Heroku Spaces ([#14973](https://github.com/hashicorp/terraform/issues/14973))
* provider/kubernetes: Upgrade K8S from 1.5.3 to 1.6.1 ([#14923](https://github.com/hashicorp/terraform/issues/14923))
* provider/kubernetes: Provide more details about why PVC failed to bind ([#15019](https://github.com/hashicorp/terraform/issues/15019))
* provider/kubernetes: Allow sourcing config_path from `KUBECONFIG` env var ([#14889](https://github.com/hashicorp/terraform/issues/14889))
* provider/openstack: Add support provider networks ([#10265](https://github.com/hashicorp/terraform/issues/10265))
* provider/openstack: Allow numerical protocols in security group rules ([#14917](https://github.com/hashicorp/terraform/issues/14917))
* provider/openstack: Sort request/response headers in debug output ([#14956](https://github.com/hashicorp/terraform/issues/14956))
* provider/openstack: Add support for FWaaS routerinsertion extension ([#12589](https://github.com/hashicorp/terraform/issues/12589))
* provider/openstack: Add Terraform version to UserAgent string ([#14955](https://github.com/hashicorp/terraform/issues/14955))
* provider/openstack: Optimize the printing of debug output ([#15086](https://github.com/hashicorp/terraform/issues/15086))
* provisioner/chef: Use `helpers.shema.Provisoner` in Chef provisioner V2 ([#14681](https://github.com/hashicorp/terraform/issues/14681))
* provider/alicloud: set `alicloud_nat_gateway` zone to be Computed to avoid perpetual diffs ([#15050](https://github.com/hashicorp/terraform/issues/15050))
* provider/alicloud: set provider to read env vars for access key and secrey key if empty strings ([#15050](https://github.com/hashicorp/terraform/issues/15050))
* provider/alicloud: Fix vpc and vswitch bugs while creating vpc and vswitch ([#15082](https://github.com/hashicorp/terraform/issues/15082))
* provider/alicloud: Fix allocating public ip bug ([#15049](https://github.com/hashicorp/terraform/issues/15049))
* provider/alicloud: Fix security group rules nic_type bug ([#15114](https://github.com/hashicorp/terraform/issues/15114))
* provider/aws: ForceNew aws_launch_config on ebs_block_device change ([#14899](https://github.com/hashicorp/terraform/issues/14899))
* provider/aws: Avoid crash when EgressOnly IGW disappears ([#14929](https://github.com/hashicorp/terraform/issues/14929))
* provider/aws: Allow IPv6/IPv4 addresses to coexist ([#13702](https://github.com/hashicorp/terraform/issues/13702))
* provider/aws: Expect exception on deletion of APIG Usage Plan Key ([#14958](https://github.com/hashicorp/terraform/issues/14958))
* provider/aws: Fix panic on nil dead_letter_config ([#14964](https://github.com/hashicorp/terraform/issues/14964))
* provider/aws: Work around IAM eventual consistency in CW Log Subs ([#14959](https://github.com/hashicorp/terraform/issues/14959))
* provider/aws: Fix ModifyInstanceAttribute on new instances ([#14992](https://github.com/hashicorp/terraform/issues/14992))
* provider/aws: Fix issue with removing tags in aws_cloudwatch_log_group ([#14886](https://github.com/hashicorp/terraform/issues/14886))
* provider/aws: Raise timeout for VPC DHCP options creation to 5 mins ([#15084](https://github.com/hashicorp/terraform/issues/15084))
* provider/aws: Retry Redshift cluster deletion on InvalidClusterState ([#15068](https://github.com/hashicorp/terraform/issues/15068))
* provider/aws: Retry Lambda func creation on IAM error ([#15067](https://github.com/hashicorp/terraform/issues/15067))
* provider/aws: Retry ECS service creation on ClusterNotFoundException ([#15066](https://github.com/hashicorp/terraform/issues/15066))
* provider/aws: Retry ECS service update on ServiceNotFoundException ([#15073](https://github.com/hashicorp/terraform/issues/15073))
* provider/aws: Retry DB parameter group delete on InvalidDBParameterGroupState ([#15071](https://github.com/hashicorp/terraform/issues/15071))
* provider/aws: Guard against panic when no aws_default_vpc found ([#15070](https://github.com/hashicorp/terraform/issues/15070))
* provider/aws: Guard against panic if no NodeGroupMembers returned in `elasticache_replication_group` ([#13488](https://github.com/hashicorp/terraform/issues/13488))
* provider/aws: Revoke default ipv6 egress rule for aws_security_group ([#15075](https://github.com/hashicorp/terraform/issues/15075))
* provider/aws: Lambda ENI deletion fails on destroy ([#11849](https://github.com/hashicorp/terraform/issues/11849))
* provider/aws: Add gov and cn hosted zone Ids to aws_elb_hosted_zone data source ([#15149](https://github.com/hashicorp/terraform/issues/15149))
* provider/azurerm: VM - making `os_profile` optional ([#14176](https://github.com/hashicorp/terraform/issues/14176))
* provider/azurerm: Preserve the Subnet properties on Update ([#13877](https://github.com/hashicorp/terraform/issues/13877))
* provider/datadog: make datadog_user verified a computed attribute ([#15034](https://github.com/hashicorp/terraform/issues/15034))
* provider/datadog: use correct evaluation_delay parameter ([#14878](https://github.com/hashicorp/terraform/issues/14878))
* provider/digitalocean: Refresh DO loadbalancer from state if 404 ([#14897](https://github.com/hashicorp/terraform/issues/14897))
* provider/github: Do not set incorrect values in github_team data source ([#14859](https://github.com/hashicorp/terraform/issues/14859))
* provider/google: use a mutex to prevent concurrent sql instance operations ([#14424](https://github.com/hashicorp/terraform/issues/14424))
* provider/google: Set instances to computed in compute_instance_group ([#15025](https://github.com/hashicorp/terraform/issues/15025))
* provider/google: Make google_compute_autoscaler use Update instead of Patch. ([#15101](https://github.com/hashicorp/terraform/issues/15101))
* provider/kubernetes: Ignore internal k8s labels in `kubernetes_persistent_volume` ([#13716](https://github.com/hashicorp/terraform/issues/13716))
* provider/librato: Add retry to librato_alert ([#15118](https://github.com/hashicorp/terraform/issues/15118))
* provider/postgresql: Fix for leaking credentials in the provider ([#14817](https://github.com/hashicorp/terraform/issues/14817))
* provider/postgresql: Drop the optional WITH token from CREATE ROLE. ([#14864](https://github.com/hashicorp/terraform/issues/14864))
* provider/rancher: refresh rancher_host from state on nil or removed host ([#15015](https://github.com/hashicorp/terraform/issues/15015))
* When assigning a "splat variable" to a resource attribute, like `foo = "${some_resource.foo.*.baz}"`, it is no longer required (nor recommended) to wrap the string in list brackets. The extra brackets continue to be allowed for resource attributes for compatibility, but this will cease to be allowed in a future version. ([#14737](https://github.com/hashicorp/terraform/issues/14737))
* provider/aws: Allow lightsail resources to work in other regions. Previously Terraform would automatically configure lightsail resources to run solely in `us-east-1`. This means that if a provider was initialized with a different region than `us-east-1`, users will need to create a provider alias to maintain their lightsail resources in us-east-1 [[#14685](https://github.com/hashicorp/terraform/issues/14685)].
* provider/aws: Users of `aws_cloudfront_distribution``default_cache_behavior` will notice that cookies is now a required value - even if that value is none ([#12628](https://github.com/hashicorp/terraform/issues/12628))
* provider/google: Users of `google_compute_health_check` who were not setting a value for the `host` property of `http_health_check` or `https_health_check` previously had a faulty default value. This has been fixed and will show as a change in terraform plan/apply. ([#14441](https://github.com/hashicorp/terraform/issues/14441))
* core: After `apply`, if the state cannot be persisted to remote for some reason then write out a local state file for recovery ([#14423](https://github.com/hashicorp/terraform/issues/14423))
* core: It's no longer required to surround an attribute value that is just a "splat" variable with a redundant set of array brackets. ([#14737](https://github.com/hashicorp/terraform/issues/14737))
* core/provider-split: Split out the Oracle OPC provider to new structure ([#14362](https://github.com/hashicorp/terraform/issues/14362))
* provider/aws: Show state reason when EC2 instance fails to launch ([#14479](https://github.com/hashicorp/terraform/issues/14479))
* provider/aws: Show last scaling activity when ASG creation/update fails ([#14480](https://github.com/hashicorp/terraform/issues/14480))
* provider/aws: Add `tags` (list of maps) for `aws_autoscaling_group` ([#13574](https://github.com/hashicorp/terraform/issues/13574))
* provider/aws: Support filtering in ASG data source ([#14501](https://github.com/hashicorp/terraform/issues/14501))
* provider/aws: Add ability to 'terraform import' aws_kms_alias resources ([#14679](https://github.com/hashicorp/terraform/issues/14679))
* provider/aws: Allow lightsail resources to work in other regions ([#14685](https://github.com/hashicorp/terraform/issues/14685))
* provider/aws: Add ability to define timeouts for DMS replication instance ([#14729](https://github.com/hashicorp/terraform/issues/14729))
* provider/aws: Add support for X-Ray tracing to aws_lambda_function ([#14728](https://github.com/hashicorp/terraform/issues/14728))
* provider/azurerm: Virtual Machine Scale Sets with managed disk support ([#13717](https://github.com/hashicorp/terraform/issues/13717))
* provider/azurerm: Virtual Machine Scale Sets with single placement option support ([#14510](https://github.com/hashicorp/terraform/issues/14510))
* provider/azurerm: Adding support for VMSS Data Disks using Managed Disk feature ([#14608](https://github.com/hashicorp/terraform/issues/14608))
* provider/azurerm: Adding support for 4TB disks ([#14688](https://github.com/hashicorp/terraform/issues/14688))
* provider/cloudstack: Load the provider configuration from a CloudMonkey config file ([#13926](https://github.com/hashicorp/terraform/issues/13926))
* provider/datadog: Add last aggregator to datadog_timeboard resource ([#14391](https://github.com/hashicorp/terraform/issues/14391))
* provider/datadog: Added new evaluation_delay parameter ([#14433](https://github.com/hashicorp/terraform/issues/14433))
* provider/docker: Allow Windows Docker containers to map volumes ([#13584](https://github.com/hashicorp/terraform/issues/13584))
* provider/docker: Add `network_alias` to `docker_container` resource ([#14710](https://github.com/hashicorp/terraform/issues/14710))
* provider/fastly: Mark the `s3_access_key`, `s3_secret_key`, &`secret_key` fields as sensitive ([#14634](https://github.com/hashicorp/terraform/issues/14634))
* provider/gitlab: Add namespcace ID attribute to `gitlab_project` ([#14483](https://github.com/hashicorp/terraform/issues/14483))
* provider/google: Add a `url` attribute to `google_storage_bucket` ([#14393](https://github.com/hashicorp/terraform/issues/14393))
* provider/google: Make google resource storage bucket importable ([#14455](https://github.com/hashicorp/terraform/issues/14455))
* provider/google: Add support for privateIpGoogleAccess on subnetworks ([#14234](https://github.com/hashicorp/terraform/issues/14234))
* provider/google: Add import support to `google_sql_user` ([#14457](https://github.com/hashicorp/terraform/issues/14457))
* provider/google: add failover parameter to `google_sql_database_instance` ([#14336](https://github.com/hashicorp/terraform/issues/14336))
* provider/google: resource_compute_disks can now reference snapshots using the snapshot URL ([#14774](https://github.com/hashicorp/terraform/issues/14774))
* provider/heroku: Add import support for `heroku_pipeline` resource ([#14486](https://github.com/hashicorp/terraform/issues/14486))
* provider/heroku: Add import support for `heroku_pipeline_coupling` resource ([#14495](https://github.com/hashicorp/terraform/issues/14495))
* provider/heroku: Add import support for `heroku_addon` resource ([#14508](https://github.com/hashicorp/terraform/issues/14508))
* provider/openstack: Add support for all protocols in Security Group Rules ([#14307](https://github.com/hashicorp/terraform/issues/14307))
* provider/openstack: Add support for updating Subnet Allocation Pools ([#14782](https://github.com/hashicorp/terraform/issues/14782))
* provider/openstack: Enable Security Group Updates ([#14815](https://github.com/hashicorp/terraform/issues/14815))
* provider/rancher: Add member support to `rancher_environment` ([#14563](https://github.com/hashicorp/terraform/issues/14563))
* provider/rundeck: adds `description` to `command` schema in `rundeck_job` resource ([#14352](https://github.com/hashicorp/terraform/issues/14352))
* provider/scaleway: allow public_ip to be set on server resource ([#14515](https://github.com/hashicorp/terraform/issues/14515))
* provider/vsphere: Exposing moid value from vm resource ([#14793](https://github.com/hashicorp/terraform/issues/14793))
* core: Store and verify checksums for S3 remote state to prevent fetching a stale state ([#14746](https://github.com/hashicorp/terraform/issues/14746))
* core: Allow -force-unlock of an S3 named state ([#14680](https://github.com/hashicorp/terraform/issues/14680))
* core: When using `-target`, any outputs that include attributes of the targeted resources are now updated ([#14186](https://github.com/hashicorp/terraform/issues/14186))
* core: Fixed 0.9.5 regression with the conditional operator `.. ? .. : ..` failing to type check with unknown/computed values ([#14454](https://github.com/hashicorp/terraform/issues/14454))
* core: Fixed 0.9 regression causing issues during refresh when adding new data resource instances using `count` ([#14098](https://github.com/hashicorp/terraform/issues/14098))
* core: Fixed crasher when populating a "splat variable" from an empty (nil) module state. ([#14526](https://github.com/hashicorp/terraform/issues/14526))
* core: fix bad Sprintf in backend migration message ([#14601](https://github.com/hashicorp/terraform/issues/14601))
* core: Addressed 0.9.5 issue with passing partially-unknown splat results through module variables, by removing the requirement to pass a redundant list level. ([#14737](https://github.com/hashicorp/terraform/issues/14737))
* provider/aws: Allow updating constraints in WAF SizeConstraintSet + no constraints ([#14661](https://github.com/hashicorp/terraform/issues/14661))
* provider/aws: Allow updating tuples in WAF ByteMatchSet + no tuples ([#14071](https://github.com/hashicorp/terraform/issues/14071))
* provider/aws: Allow updating tuples in WAF SQLInjectionMatchSet + no tuples ([#14667](https://github.com/hashicorp/terraform/issues/14667))
* provider/aws: Allow updating tuples in WAF XssMatchSet + no tuples ([#14671](https://github.com/hashicorp/terraform/issues/14671))
* provider/aws: Increase timeout for creating security group ([#14380](https://github.com/hashicorp/terraform/issues/14380)] [[#14724](https://github.com/hashicorp/terraform/issues/14724))
* provider/aws: Allow Internet Gateway IPv6 routes ([#14484](https://github.com/hashicorp/terraform/issues/14484))
* provider/aws: ForceNew aws_launch_config when root_block_device changes ([#14507](https://github.com/hashicorp/terraform/issues/14507))
* provider/aws: Pass IAM Roles to codepipeline actions ([#14263](https://github.com/hashicorp/terraform/issues/14263))
* provider/aws: Create rule(s) for prefix-list-only AWS security group permissions on 'terraform import' ([#14528](https://github.com/hashicorp/terraform/issues/14528))
* provider/aws: Set aws_subnet ipv6_cidr_block to computed ([#14542](https://github.com/hashicorp/terraform/issues/14542))
* provider/aws: Change of aws_subnet ipv6 causing update failure ([#14545](https://github.com/hashicorp/terraform/issues/14545))
* provider/aws: Nothing to update in cloudformation should not result in errors ([#14463](https://github.com/hashicorp/terraform/issues/14463))
* provider/aws: Handling data migration in RDS snapshot restoring ([#14622](https://github.com/hashicorp/terraform/issues/14622))
* provider/aws: Mark cookies in `default_cache_behaviour` of cloudfront_distribution as required ([#12628](https://github.com/hashicorp/terraform/issues/12628))
* provider/aws: Fall back to old tagging mechanism for AWS gov and aws China ([#14627](https://github.com/hashicorp/terraform/issues/14627))
* provider/aws: Increase timeout for creation of route_table ([#14701](https://github.com/hashicorp/terraform/issues/14701))
* provider/aws: Retry ElastiCache cluster deletion when it's snapshotting ([#14700](https://github.com/hashicorp/terraform/issues/14700))
* provider/aws: Retry ECS service update on InvalidParameterException ([#14708](https://github.com/hashicorp/terraform/issues/14708))
* provider/aws: Retry IAM Role deletion on DeleteConflict ([#14707](https://github.com/hashicorp/terraform/issues/14707))
* provider/aws: Do not dereference source_Dest_check in aws_instance ([#14723](https://github.com/hashicorp/terraform/issues/14723))
* provider/aws: Add validation function for IAM Policies ([#14669](https://github.com/hashicorp/terraform/issues/14669))
* provider/aws: Fix panic on instance shutdown ([#14727](https://github.com/hashicorp/terraform/issues/14727))
* provider/aws: Handle migration when restoring db cluster from snapshot ([#14766](https://github.com/hashicorp/terraform/issues/14766))
* provider/aws: Provider ability to enable snapshotting on ElastiCache RG ([#14757](https://github.com/hashicorp/terraform/issues/14757))
* provider/cloudstack: `cloudstack_firewall` panicked when used with older (<v4.6)CloudStackversions([#14044](https://github.com/hashicorp/terraform/issues/14044))
* provider/datadog: Allowed method on aggregator is `avg` ! `average` ([#14414](https://github.com/hashicorp/terraform/issues/14414))
* provider/digitalocean: Fix parsing of digitalocean dns records ([#14215](https://github.com/hashicorp/terraform/issues/14215))
* provider/github: Log HTTP requests and responses in DEBUG mode ([#14363](https://github.com/hashicorp/terraform/issues/14363))
* provider/github Check for potentially nil response from GitHub API client ([#14683](https://github.com/hashicorp/terraform/issues/14683))
* provider/google: Fix health check http/https defaults ([#14441](https://github.com/hashicorp/terraform/issues/14441))
* provider/aws: Users of aws_cloudfront_distributions with custom_origins have been broken due to changes in the AWS API requiring `OriginReadTimeout` being set for updates. This has been fixed and will show as a change in terraform plan / apply. ([#13367](https://github.com/hashicorp/terraform/issues/13367))
* provider/aws: Users of China and Gov clouds, cannot use the new tagging of volumes created as part of aws_instances ([#14055](https://github.com/hashicorp/terraform/issues/14055))
* provider/aws: Skip tag operations on cloudwatch logs in govcloud partition. Currently not supported by Amazon. ([#12414](https://github.com/hashicorp/terraform/issues/12414))
Depending on the use of quotes in your TXT/SPF records this may result in extra diff in plan/apply ([#14170](https://github.com/hashicorp/terraform/issues/14170))
* **New Data Source:** `aws_efs_file_system` ([#14041](https://github.com/hashicorp/terraform/issues/14041))
* **New Data Source:** `http`, for retrieving text data from generic HTTP servers ([#14270](https://github.com/hashicorp/terraform/issues/14270))
* **New Data Source:** `google_container_engine_versions`, for retrieving valid versions for clusters ([#14280](https://github.com/hashicorp/terraform/issues/14280))
* **New Interpolation Function:** `log`, for computing logarithms ([#12872](https://github.com/hashicorp/terraform/issues/12872))
* core: `sha512` and `base64sha512` interpolation functions, similar to their `sha256` equivalents. ([#14100](https://github.com/hashicorp/terraform/issues/14100))
* core: It's now possible to use the index operator `[ ]` to select a known value out of a partially-known list, such as using "splat syntax" and increasing the `count`. ([#14135](https://github.com/hashicorp/terraform/issues/14135))
* provider/aws: Add support for CustomOrigin timeouts to aws_cloudfront_distribution ([#13367](https://github.com/hashicorp/terraform/issues/13367))
* provider/aws: Add support for IAMDatabaseAuthenticationEnabled ([#14092](https://github.com/hashicorp/terraform/issues/14092))
* provider/aws: aws_dynamodb_table Add support for TimeToLive ([#14104](https://github.com/hashicorp/terraform/issues/14104))
* provider/aws: Add `security_configuration` support to `aws_emr_cluster` ([#14133](https://github.com/hashicorp/terraform/issues/14133))
* provider/aws: Add support for the tenancy placement option in `aws_spot_fleet_request` ([#14163](https://github.com/hashicorp/terraform/issues/14163))
* provider/aws: `aws_db_option_group` normalizes name to lowercase ([#14192](https://github.com/hashicorp/terraform/issues/14192), [#14366](https://github.com/hashicorp/terraform/issues/14366))
* provider/aws: Add support description to aws_iam_role ([#14208](https://github.com/hashicorp/terraform/issues/14208))
* provider/aws: Add support for SSM Documents to aws_cloudwatch_event_target ([#14067](https://github.com/hashicorp/terraform/issues/14067))
* provider/aws: add additional custom service endpoint options for CloudFormation, KMS, RDS, SNS & SQS ([#14097](https://github.com/hashicorp/terraform/issues/14097))
* provider/aws: Add ARN to security group data source ([#14245](https://github.com/hashicorp/terraform/issues/14245))
* provider/aws: Improve the wording of DynamoDB Validation error message ([#14256](https://github.com/hashicorp/terraform/issues/14256))
* provider/aws: Add support for importing Kinesis Streams ([#14278](https://github.com/hashicorp/terraform/issues/14278))
* provider/aws: Add `arn` attribute to `aws_ses_domain_identity` resource ([#14306](https://github.com/hashicorp/terraform/issues/14306))
* provider/aws: Add support for targets to aws_ssm_association ([#14246](https://github.com/hashicorp/terraform/issues/14246))
* provider/aws: native redis clustering support for elasticache ([#14317](https://github.com/hashicorp/terraform/issues/14317))
* provider/aws: Support updating `aws_waf_rule` predicates ([#14089](https://github.com/hashicorp/terraform/issues/14089))
* provider/azurerm: `azurerm_template_deployment` now supports String/Int/Boolean outputs ([#13670](https://github.com/hashicorp/terraform/issues/13670))
* provider/azurerm: Expose the Private IP Address for a Load Balancer, if available ([#13965](https://github.com/hashicorp/terraform/issues/13965))
* provider/dns: Fix data dns txt record set ([#14271](https://github.com/hashicorp/terraform/issues/14271))
* provider/dnsimple: Add support for import for dnsimple_records ([#9130](https://github.com/hashicorp/terraform/issues/9130))
* provider/triton: Add support for reading provider configuration from `TRITON_*` environment variables in addition to `SDC_*`([#14000](https://github.com/hashicorp/terraform/issues/14000))
* provider/triton: Add `cloud_config` argument to `triton_machine` resources for Linux containers ([#12840](https://github.com/hashicorp/terraform/issues/12840))
* core: `module` blocks without names are now caught in validation, along with various other block types ([#14162](https://github.com/hashicorp/terraform/issues/14162))
* core: no longer will errors and normal log output get garbled together on Windows ([#14194](https://github.com/hashicorp/terraform/issues/14194))
* core: Avoid crash on empty TypeSet blocks ([#14305](https://github.com/hashicorp/terraform/issues/14305))
* provider/aws: Update aws_ebs_volume when attached ([#14005](https://github.com/hashicorp/terraform/issues/14005))
* provider/aws: Set aws_instance volume_tags to be Computed ([#14007](https://github.com/hashicorp/terraform/issues/14007))
* provider/aws: Fix issue getting partition for federated users ([#13992](https://github.com/hashicorp/terraform/issues/13992))
* provider/aws: aws_spot_instance_request not forcenew on volume_tags ([#14046](https://github.com/hashicorp/terraform/issues/14046))
* provider/aws: Exclude aws_instance volume tagging for China and Gov Clouds ([#14055](https://github.com/hashicorp/terraform/issues/14055))
* provider/aws: Fix source_dest_check with network_interface ([#14079](https://github.com/hashicorp/terraform/issues/14079))
* provider/aws: Fixes the bug where SNS delivery policy get always recreated ([#14064](https://github.com/hashicorp/terraform/issues/14064))
* provider/aws: Increase timeouts for Route Table retries ([#14345](https://github.com/hashicorp/terraform/issues/14345))
* provider/aws: Prevent Crash when importing aws_route53_record ([#14218](https://github.com/hashicorp/terraform/issues/14218))
* provider/aws: More consistent (un)quoting of long TXT/SPF `aws_route53_record`s ([#14170](https://github.com/hashicorp/terraform/issues/14170))
* provider/aws: Retry deletion of AWSConfig Rule on ResourceInUseException ([#14269](https://github.com/hashicorp/terraform/issues/14269))
* provider/aws: Refresh ssm document from state on 404 ([#14279](https://github.com/hashicorp/terraform/issues/14279))
* provider/aws: Allow zero-value ELB and ALB names ([#14304](https://github.com/hashicorp/terraform/issues/14304))
* provider/aws: Update the ignoring of AWS specific tags ([#14321](https://github.com/hashicorp/terraform/issues/14321))
* provider/aws: Fix SG update on instance with multiple network interfaces ([#14299](https://github.com/hashicorp/terraform/issues/14299))
* provider/azurerm: Fixing a bug in `azurerm_network_interface` ([#14365](https://github.com/hashicorp/terraform/issues/14365))
* provider/digitalocean: Prevent diffs when using IDs of images instead of slugs ([#13879](https://github.com/hashicorp/terraform/issues/13879))
* provider/fastly: Changes setting conditionals to optional ([#14103](https://github.com/hashicorp/terraform/issues/14103))
* provider/google: Ignore certain project services that can't be enabled directly via the api ([#13730](https://github.com/hashicorp/terraform/issues/13730))
* provider/google: Ability to add more than 25 project services ([#13758](https://github.com/hashicorp/terraform/issues/13758))
* provider/google: Fix compute instance panic with bad disk config ([#14169](https://github.com/hashicorp/terraform/issues/14169))
* provider/google: Handle `google_storage_bucket_object` not being found ([#14203](https://github.com/hashicorp/terraform/issues/14203))
* provider/google: Handle `google_compute_instance_group_manager` not being found ([#14190](https://github.com/hashicorp/terraform/issues/14190))
* provider/google: better visibility for compute_region_backend_service ([#14301](https://github.com/hashicorp/terraform/issues/14301))
* provider/heroku: Configure buildpacks correctly for both Org Apps and non-org Apps ([#13990](https://github.com/hashicorp/terraform/issues/13990))
* provider/heroku: Fix `heroku_cert` update of ssl cert ([#14240](https://github.com/hashicorp/terraform/issues/14240))
* provider/openstack: Handle disassociating deleted FloatingIP's from a server ([#14210](https://github.com/hashicorp/terraform/issues/14210))
* provider/postgres grant role when creating database ([#11452](https://github.com/hashicorp/terraform/issues/11452))
* provider/triton: Make triton machine deletes synchronous. ([#14368](https://github.com/hashicorp/terraform/issues/14368))
* provisioner/remote-exec: Fix panic from remote_exec provisioner ([#14134](https://github.com/hashicorp/terraform/issues/14134))
* **New Data Source:** `aws_ami_ids` ([#13844](https://github.com/hashicorp/terraform/issues/13844)] [[#13866](https://github.com/hashicorp/terraform/issues/13866))
* **New Data Source:** `aws_ebs_snapshot_ids` ([#13844](https://github.com/hashicorp/terraform/issues/13844)] [[#13866](https://github.com/hashicorp/terraform/issues/13866))
* **New Data Source:** `aws_kms_alias` ([#13669](https://github.com/hashicorp/terraform/issues/13669))
* **New Data Source:** `aws_kinesis_stream` ([#13562](https://github.com/hashicorp/terraform/issues/13562))
* **New Data Source:** `digitalocean_image` ([#13787](https://github.com/hashicorp/terraform/issues/13787))
* **New Data Source:** `google_compute_network` ([#12442](https://github.com/hashicorp/terraform/issues/12442))
* **New Data Source:** `google_compute_subnetwork` ([#12442](https://github.com/hashicorp/terraform/issues/12442))
* **New Resource:** `local_file` for creating local files (please see the docs for caveats) ([#12757](https://github.com/hashicorp/terraform/issues/12757))
* core: Add a `-reconfigure` flag to the `init` command, to configure a backend while ignoring any saved configuration ([#13825](https://github.com/hashicorp/terraform/issues/13825))
* helper/schema: Disallow validation+diff suppression on computed fields ([#13878](https://github.com/hashicorp/terraform/issues/13878))
* config: The interpolation function `cidrhost` now accepts a negative host number to count backwards from the end of the range ([#13765](https://github.com/hashicorp/terraform/issues/13765))
* config: New interpolation function `matchkeys` for using values from one list to filter corresponding values from another list using a matching set. ([#13847](https://github.com/hashicorp/terraform/issues/13847))
* state/remote/swift: Support Openstack request logging ([#13583](https://github.com/hashicorp/terraform/issues/13583))
* provider/aws: Add an option to skip getting the supported EC2 platforms ([#13672](https://github.com/hashicorp/terraform/issues/13672))
* provider/aws: Add `name_prefix` support to `aws_cloudwatch_log_group` ([#13273](https://github.com/hashicorp/terraform/issues/13273))
* provider/aws: Add `bucket_prefix` to `aws_s3_bucket` ([#13274](https://github.com/hashicorp/terraform/issues/13274))
* provider/aws: Add replica_source_db to the aws_db_instance datasource ([#13842](https://github.com/hashicorp/terraform/issues/13842))
* provider/aws: Add IPv6 outputs to aws_subnet datasource ([#13841](https://github.com/hashicorp/terraform/issues/13841))
* provider/aws: Exercise SecondaryPrivateIpAddressCount for network interface ([#10590](https://github.com/hashicorp/terraform/issues/10590))
* provider/fastly: Add support for GCS logging ([#13553](https://github.com/hashicorp/terraform/issues/13553))
* provider/google: `google_compute_address` and `google_compute_global_address` are now importable ([#13270](https://github.com/hashicorp/terraform/issues/13270))
* provider/google: `google_compute_network` is now importable ([#13834](https://github.com/hashicorp/terraform/issues/13834))
* provider/google: add attached_disk field to google_compute_instance ([#13443](https://github.com/hashicorp/terraform/issues/13443))
* provider/heroku: Set App buildpacks from config ([#13910](https://github.com/hashicorp/terraform/issues/13910))
* provider/heroku: Create Heroku app in a private space ([#13862](https://github.com/hashicorp/terraform/issues/13862))
* provider/vault: `vault_generic_secret` resource can now optionally detect drift if it has appropriate access ([#11776](https://github.com/hashicorp/terraform/issues/11776))
* provider/alicloud: Fix allocate public ip error ([#13268](https://github.com/hashicorp/terraform/issues/13268))
* provider/alicloud: alicloud_security_group_rule: check ptr before use it [[#13731](https://github.com/hashicorp/terraform/issues/13731))
* provider/alicloud: alicloud_instance: fix ecs internet_max_bandwidth_out cannot set zero bug ([#13731](https://github.com/hashicorp/terraform/issues/13731))
* provider/aws: Allow force-destroying `aws_route53_zone` which has trailing dot ([#12421](https://github.com/hashicorp/terraform/issues/12421))
* provider/aws: Allow GovCloud KMS ARNs to pass validation in `kms_key_id` attributes ([#13699](https://github.com/hashicorp/terraform/issues/13699))
* provider/aws: Changing aws_opsworks_instance should ForceNew ([#13839](https://github.com/hashicorp/terraform/issues/13839))
* provider/aws: Fix DB Parameter Group Name ([#13279](https://github.com/hashicorp/terraform/issues/13279))
* provider/aws: Fix issue importing some Security Groups and Rules based on rule structure ([#13630](https://github.com/hashicorp/terraform/issues/13630))
* provider/aws: Fix issue for cross account IAM role with `aws_lambda_permission` ([#13865](https://github.com/hashicorp/terraform/issues/13865))
* provider/aws: Fix WAF IPSet descriptors removal on update ([#13766](https://github.com/hashicorp/terraform/issues/13766))
* provider/aws: Increase default number of retries from 11 to 25 ([#13673](https://github.com/hashicorp/terraform/issues/13673))
* provider/aws: Remove aws_vpc_dhcp_options if not found ([#13610](https://github.com/hashicorp/terraform/issues/13610))
* provider/aws: Remove aws_network_acl_rule if not found ([#13608](https://github.com/hashicorp/terraform/issues/13608))
* provider/aws: Use mutex & retry for WAF change operations ([#13656](https://github.com/hashicorp/terraform/issues/13656))
* provider/aws: Adding support for ipv6 to aws_subnets needs migration ([#13876](https://github.com/hashicorp/terraform/issues/13876))
* provider/aws: Fix validation of the `name_prefix` parameter of the `aws_alb` resource ([#13441](https://github.com/hashicorp/terraform/issues/13441))
* provider/azurerm: Locking around Network Security Group / Subnets ([#13637](https://github.com/hashicorp/terraform/issues/13637))
* provider/azurerm: Locking route table on subnet create/delete ([#13791](https://github.com/hashicorp/terraform/issues/13791))
* provider/azurerm: VM's - fixes a bug where ssh_keys could contain a null entry ([#13755](https://github.com/hashicorp/terraform/issues/13755))
* provider/azurerm: VM's - ignoring the case on the `create_option` field during Diff's ([#13933](https://github.com/hashicorp/terraform/issues/13933))
* provider/fastly: Fix issue with using 0 for `default_ttl` ([#13648](https://github.com/hashicorp/terraform/issues/13648))
* provider/google: Fix panic in GKE provisioning with addons ([#13954](https://github.com/hashicorp/terraform/issues/13954))
* provider/fastly: Add ability to associate a healthcheck to a backend ([#13539](https://github.com/hashicorp/terraform/issues/13539))
* provider/google: Stop setting the id when project creation fails ([#13644](https://github.com/hashicorp/terraform/issues/13644))
* provider/google: Make ports in resource_compute_forwarding_rule ForceNew ([#13833](https://github.com/hashicorp/terraform/issues/13833))
* provider/google: Validation fixes for forwarding rules ([#13952](https://github.com/hashicorp/terraform/issues/13952))
* provider/ignition: Internal cache moved to global, instead per provider instance ([#13919](https://github.com/hashicorp/terraform/issues/13919))
* provider/logentries: Refresh from state when resources not found ([#13810](https://github.com/hashicorp/terraform/issues/13810))
* provider/newrelic: newrelic_alert_condition - `condition_scope` must be `application` or `instance` ([#12972](https://github.com/hashicorp/terraform/issues/12972))
* provider/opc: fixed issue with unqualifying nats ([#13826](https://github.com/hashicorp/terraform/issues/13826))
* provider/opc: Fix instance label if unset ([#13846](https://github.com/hashicorp/terraform/issues/13846))
* core: add `-lock-timeout` option, which will block and retry locks for the given duration ([#13262](https://github.com/hashicorp/terraform/issues/13262))
* core: new `chomp` interpolation function which returns the given string with any trailing newline characters removed ([#13419](https://github.com/hashicorp/terraform/issues/13419))
* backend/remote-state: Add support for assume role extensions to s3 backend ([#13236](https://github.com/hashicorp/terraform/issues/13236))
* backend/remote-state: Filter extra entries from s3 environment listings ([#13596](https://github.com/hashicorp/terraform/issues/13596))
* config: New interpolation functions `basename` and `dirname`, for file path manipulation ([#13080](https://github.com/hashicorp/terraform/issues/13080))
* helper/resource: Allow unknown "pending" states ([#13099](https://github.com/hashicorp/terraform/issues/13099))
* command/hook_ui: Increase max length of state IDs from 20 to 80 ([#13317](https://github.com/hashicorp/terraform/issues/13317))
* provider/aws: Add support to set iam_role_arn on cloudformation Stack ([#12547](https://github.com/hashicorp/terraform/issues/12547))
* provider/aws: Support priority and listener_arn update of alb_listener_rule ([#13125](https://github.com/hashicorp/terraform/issues/13125))
* provider/aws: Deprecate roles in favour of role in iam_instance_profile ([#13130](https://github.com/hashicorp/terraform/issues/13130))
* provider/aws: Make alb_target_group_attachment port optional ([#13139](https://github.com/hashicorp/terraform/issues/13139))
* provider/aws: `aws_api_gateway_domain_name``certificate_private_key` field marked as sensitive ([#13147](https://github.com/hashicorp/terraform/issues/13147))
* provider/aws: `aws_directory_service_directory``password` field marked as sensitive ([#13147](https://github.com/hashicorp/terraform/issues/13147))
* provider/aws: `aws_kinesis_firehose_delivery_stream``password` field marked as sensitive ([#13147](https://github.com/hashicorp/terraform/issues/13147))
* provider/aws: `aws_opsworks_application``app_source.0.password`&`ssl_configuration.0.private_key` fields marked as sensitive ([#13147](https://github.com/hashicorp/terraform/issues/13147))
* provider/aws: `aws_opsworks_stack``custom_cookbooks_source.0.password` field marked as sensitive ([#13147](https://github.com/hashicorp/terraform/issues/13147))
* provider/aws: Support the ability to enable / disable ipv6 support in VPC ([#12527](https://github.com/hashicorp/terraform/issues/12527))
* provider/aws: Added API Gateway integration update ([#13249](https://github.com/hashicorp/terraform/issues/13249))
* provider/aws: Add `identifier` | `name_prefix` to RDS resources ([#13232](https://github.com/hashicorp/terraform/issues/13232))
* provider/aws: Update caller_identity data source ([#13092](https://github.com/hashicorp/terraform/issues/13092))
* provider/aws: `aws_subnet_ids` data source for getting a list of subnet ids matching certain criteria ([#13188](https://github.com/hashicorp/terraform/issues/13188))
* provider/aws: Support ip_address_type for aws_alb ([#13227](https://github.com/hashicorp/terraform/issues/13227))
* provider/aws: Migrate `aws_dms_*` resources away from AWS waiters ([#13291](https://github.com/hashicorp/terraform/issues/13291))
* provider/aws: Add support for treat_missing_data to cloudwatch_metric_alarm ([#13358](https://github.com/hashicorp/terraform/issues/13358))
* provider/aws: Add support for evaluate_low_sample_count_percentiles to cloudwatch_metric_alarm ([#13371](https://github.com/hashicorp/terraform/issues/13371))
* provider/aws: Add `name_prefix` to `aws_alb_target_group` ([#13442](https://github.com/hashicorp/terraform/issues/13442))
* provider/aws: Add support for EMR clusters to aws_appautoscaling_target ([#13368](https://github.com/hashicorp/terraform/issues/13368))
* provider/aws: Add import capabilities to codecommit_repository ([#13577](https://github.com/hashicorp/terraform/issues/13577))
* provider/cloudstack: Do not force a new resource when updating `cloudstack_loadbalancer_rule` members ([#11786](https://github.com/hashicorp/terraform/issues/11786))
* provider/fastly: Add support for Sumologic logging ([#12541](https://github.com/hashicorp/terraform/issues/12541))
* provider/github: Handle the case when issue labels already exist ([#13182](https://github.com/hashicorp/terraform/issues/13182))
* provider/google: Mark `google_container_cluster`'s `client_key`&`password` inside `master_auth` as sensitive ([#13148](https://github.com/hashicorp/terraform/issues/13148))
* provider/google: Add node_pool field in resource_container_cluster ([#13402](https://github.com/hashicorp/terraform/issues/13402))
* provider/openstack: Add support for 'value_specs' options to `openstack_compute_servergroup_v2` ([#13380](https://github.com/hashicorp/terraform/issues/13380))
* provider/statuscake: Add support for StatusCake TriggerRate field ([#13340](https://github.com/hashicorp/terraform/issues/13340))
* provider/triton: Move to joyent/triton-go ([#13225](https://github.com/hashicorp/terraform/issues/13225))
* provisioner/chef: Make sure we add new Chef-Vault clients as clients ([#13525](https://github.com/hashicorp/terraform/issues/13525))
* core: Escaped interpolation-like sequences (like `$${foo}`) now permitted in variable defaults ([#13137](https://github.com/hashicorp/terraform/issues/13137))
* core: Fix strange issues with computed values in provider configuration that were worked around with `-input=false` ([#11264](https://github.com/hashicorp/terraform/issues/11264)], [[#13264](https://github.com/hashicorp/terraform/issues/13264))
* core: Fix crash when providing nested maps as variable values in a `module` block ([#13343](https://github.com/hashicorp/terraform/issues/13343))
* core: `connection` block attributes are now subject to basic validation of attribute names during validate walk ([#13400](https://github.com/hashicorp/terraform/issues/13400))
* provider/aws: Add Support for maintenance_window and back_window to rds_cluster_instance ([#13134](https://github.com/hashicorp/terraform/issues/13134))
* provider/aws: Increase timeout for AMI registration ([#13159](https://github.com/hashicorp/terraform/issues/13159))
* provider/aws: Increase timeouts for ELB ([#13161](https://github.com/hashicorp/terraform/issues/13161))
* provider/aws: `volume_type` of `aws_elasticsearch_domain.0.ebs_options` marked as `Computed` which prevents spurious diffs ([#13160](https://github.com/hashicorp/terraform/issues/13160))
* provider/aws: Don't set DBName on `aws_db_instance` from snapshot ([#13140](https://github.com/hashicorp/terraform/issues/13140))
* provider/aws: Add DiffSuppression to aws_ecs_service placement_strategies ([#13220](https://github.com/hashicorp/terraform/issues/13220))
* provider/aws: Refresh aws_alb_target_group stickiness on manual updates ([#13199](https://github.com/hashicorp/terraform/issues/13199))
* provider/aws: Preserve default retain_on_delete in cloudfront import ([#13209](https://github.com/hashicorp/terraform/issues/13209))
* provider/aws: Set stickiness to computed in alb_target_group ([#13278](https://github.com/hashicorp/terraform/issues/13278))
* provider/aws: Increase timeout for deploying `cloudfront_distribution` from 40 to 70 mins ([#13319](https://github.com/hashicorp/terraform/issues/13319))
* provider/aws: Increase AMI retry timeouts ([#13324](https://github.com/hashicorp/terraform/issues/13324))
* provider/aws: Raise timeout for deleting APIG REST API ([#13414](https://github.com/hashicorp/terraform/issues/13414))
* provider/aws: Raise timeout for attaching/detaching VPN Gateway ([#13457](https://github.com/hashicorp/terraform/issues/13457))
* provider/aws: Recreate opsworks_stack on change of service_role_arn ([#13325](https://github.com/hashicorp/terraform/issues/13325))
* provider/aws: Fix KMS Key reading with Exists method ([#13348](https://github.com/hashicorp/terraform/issues/13348))
* provider/aws: Fix DynamoDB issues about GSIs indexes ([#13256](https://github.com/hashicorp/terraform/issues/13256))
* provider/aws: Fix `aws_s3_bucket` drift detection of logging options ([#13281](https://github.com/hashicorp/terraform/issues/13281))
* provider/aws: Update ElasticTranscoderPreset to have default for MaxFrameRate ([#13422](https://github.com/hashicorp/terraform/issues/13422))
* provider/aws: Fix aws_ami_launch_permission refresh when AMI disappears ([#13469](https://github.com/hashicorp/terraform/issues/13469))
* provider/aws: Add support for updating SSM documents ([#13491](https://github.com/hashicorp/terraform/issues/13491))
* provider/aws: Fix panic on nil route configs ([#13548](https://github.com/hashicorp/terraform/issues/13548))
* provider/azurerm: Network Security Group - ignoring protocol casing at Import time ([#13153](https://github.com/hashicorp/terraform/issues/13153))
* provider/azurerm: Fix crash when importing Local Network Gateways ([#13261](https://github.com/hashicorp/terraform/issues/13261))
* provider/azurerm: Defaulting the value of `duplicate_detection_history_time_window` for `azurerm_servicebus_topic` ([#13223](https://github.com/hashicorp/terraform/issues/13223))
* provider/azurerm: Event Hubs making the Location field idempotent ([#13570](https://github.com/hashicorp/terraform/issues/13570))
* provider/bitbucket: Fixed issue where provider would fail with an "EOF" error on some operations ([#13390](https://github.com/hashicorp/terraform/issues/13390))
* provider/dnsimple: Handle 404 on DNSimple records ([#13131](https://github.com/hashicorp/terraform/issues/13131))
* provider/kubernetes: Use PATCH to update namespace ([#13114](https://github.com/hashicorp/terraform/issues/13114))
* provider/ns1: No splitting answer on SPF records. ([#13260](https://github.com/hashicorp/terraform/issues/13260))
* provider/openstack: Refresh volume_attachment from state if NotFound ([#13342](https://github.com/hashicorp/terraform/issues/13342))
* provider/openstack: Add SOFT_DELETED to delete status ([#13444](https://github.com/hashicorp/terraform/issues/13444))
* provider/profitbricks: Changed output type of ips variable of ip_block ProfitBricks resource ([#13290](https://github.com/hashicorp/terraform/issues/13290))
* provider/template: Fix panic in cloudinit config ([#13581](https://github.com/hashicorp/terraform/issues/13581))
* provider/openstack: Port Fixed IPs are able to be read again using the original numerical notation. However, Fixed IP configurations which are obtaining addresses via DHCP must now use the `all_fixed_ips` attribute to reference the returned IP address.
* core: fix interpolation error when referencing computed values from an `aws_instance``cidr_block` ([#13046](https://github.com/hashicorp/terraform/issues/13046))
* core: fix `ignore_changes` causing fields to be removed during apply ([#12897](https://github.com/hashicorp/terraform/issues/12897))
* core: add `-force-copy` option to `terraform init` to supress prompts for copying state ([#12939](https://github.com/hashicorp/terraform/issues/12939))
* helper/acctest: Add NewSSHKeyPair function ([#12894](https://github.com/hashicorp/terraform/issues/12894))
* provider/aws: Added support for EMR AutoScalingRole ([#12823](https://github.com/hashicorp/terraform/issues/12823))
* provider/aws: Add `name_prefix` to `aws_autoscaling_group` and `aws_elb` resources ([#12629](https://github.com/hashicorp/terraform/issues/12629))
* provider/aws: Updated default configuration manager version in `aws_opsworks_stack` ([#12979](https://github.com/hashicorp/terraform/issues/12979))
* provider/aws: Added aws_api_gateway_api_key value attribute ([#9462](https://github.com/hashicorp/terraform/issues/9462))
* provider/aws: Allow aws_alb subnets to change ([#12850](https://github.com/hashicorp/terraform/issues/12850))
* provider/aws: Support Attachment of ALB Target Groups to Autoscaling Groups ([#12855](https://github.com/hashicorp/terraform/issues/12855))
* provider/aws: Support Import of iam_server_certificate ([#13065](https://github.com/hashicorp/terraform/issues/13065))
* provider/azurerm: Add support for setting the primary network interface ([#11290](https://github.com/hashicorp/terraform/issues/11290))
* provider/cloudstack: Add `zone_id` to `cloudstack_ipaddress` resource ([#11306](https://github.com/hashicorp/terraform/issues/11306))
* provider/consul: Add support for basic auth to the provider ([#12679](https://github.com/hashicorp/terraform/issues/12679))
* provider/digitalocean: Support disk only resize ([#13059](https://github.com/hashicorp/terraform/issues/13059))
* provider/dnsimple: Allow dnsimple_record.priority attribute to be set ([#12843](https://github.com/hashicorp/terraform/issues/12843))
* provider/google: Add support for service_account, metadata, and image_type fields in GKE cluster config ([#12743](https://github.com/hashicorp/terraform/issues/12743))
* provider/google: Add local ssd count support for container clusters ([#12281](https://github.com/hashicorp/terraform/issues/12281))
* provider/ignition: ignition_filesystem, explicit option to create the filesystem ([#12980](https://github.com/hashicorp/terraform/issues/12980))
* provider/kubernetes: Internal K8S annotations are ignored in `config_map` ([#12945](https://github.com/hashicorp/terraform/issues/12945))
* provider/ns1: Ensure provider checks for credentials ([#12920](https://github.com/hashicorp/terraform/issues/12920))
* provider/openstack: Adding Timeouts to Blockstorage Resources ([#12862](https://github.com/hashicorp/terraform/issues/12862))
* provider/openstack: Adding Timeouts to FWaaS v1 Resources ([#12863](https://github.com/hashicorp/terraform/issues/12863))
* provider/openstack: Adding Timeouts to Image v2 and LBaaS v2 Resources ([#12865](https://github.com/hashicorp/terraform/issues/12865))
* provider/openstack: Adding Timeouts to Network Resources ([#12866](https://github.com/hashicorp/terraform/issues/12866))
* provider/openstack: Adding Timeouts to LBaaS v1 Resources ([#12867](https://github.com/hashicorp/terraform/issues/12867))
* core: Remove legacy remote state configuration on state migration. This fixes errors when saving plans. ([#12888](https://github.com/hashicorp/terraform/issues/12888))
* provider/arukas: Default timeout for launching container increased to 15mins (was 10mins) ([#12849](https://github.com/hashicorp/terraform/issues/12849))
* provider/aws: Fix flattened cloudfront lambda function associations to be a set not a slice ([#11984](https://github.com/hashicorp/terraform/issues/11984))
* provider/aws: Consider ACTIVE as pending state during ECS svc deletion ([#12986](https://github.com/hashicorp/terraform/issues/12986))
* provider/aws: Deprecate the usage of Api Gateway Key Stages in favor of Usage Plans ([#12883](https://github.com/hashicorp/terraform/issues/12883))
* provider/aws: prevent panic in resourceAwsSsmDocumentRead ([#12891](https://github.com/hashicorp/terraform/issues/12891))
* provider/aws: Prevent panic when setting AWS CodeBuild Source to state ([#12915](https://github.com/hashicorp/terraform/issues/12915))
* provider/aws: Only call replace Iam Instance Profile on existing machines ([#12922](https://github.com/hashicorp/terraform/issues/12922))
* provider/aws: Increase AWS AMI Destroy timeout ([#12943](https://github.com/hashicorp/terraform/issues/12943))
* provider/aws: Set aws_vpc ipv6 for associated only ([#12899](https://github.com/hashicorp/terraform/issues/12899))
* provider/pagerduty: the deprecated `name_regex` field has been removed from vendor data source ([#12396](https://github.com/hashicorp/terraform/issues/12396))
* core: Fix panic when an undefined module is reference ([#12793](https://github.com/hashicorp/terraform/issues/12793))
* core: Fix regression from 0.8.x when using a data source in a module ([#12837](https://github.com/hashicorp/terraform/issues/12837))
* command/apply: Applies from plans with backends set will reuse the backend rather than local ([#12785](https://github.com/hashicorp/terraform/issues/12785))
* command/init: Changing only `-backend-config` detects changes and reconfigures ([#12776](https://github.com/hashicorp/terraform/issues/12776))
* command/init: Fix legacy backend init error that could occur when upgrading ([#12818](https://github.com/hashicorp/terraform/issues/12818))
* command/push: Detect local state and error properly ([#12773](https://github.com/hashicorp/terraform/issues/12773))
* command/refresh: Allow empty and non-existent state ([#12777](https://github.com/hashicorp/terraform/issues/12777))
* provider/aws: Get the aws_lambda_function attributes when there are great than 50 versions of a function ([#11745](https://github.com/hashicorp/terraform/issues/11745))
* provider/aws: Correctly check for nil cidr_block in aws_network_acl ([#12735](https://github.com/hashicorp/terraform/issues/12735))
* provider/aws: Stop setting weight property on route53_record read ([#12756](https://github.com/hashicorp/terraform/issues/12756))
* provider/google: Fix the Google provider asking for account_file input on every run ([#12729](https://github.com/hashicorp/terraform/issues/12729))
* provider/profitbricks: Prevent panic on profitbricks volume ([#12819](https://github.com/hashicorp/terraform/issues/12819))
**This is the complete 0.8.8 to 0.9 CHANGELOG. Below this section we also have a 0.9.0-beta2 to 0.9.0 final CHANGELOG.**
BACKWARDS INCOMPATIBILITIES / NOTES:
* provider/aws: `aws_codebuild_project` renamed `timeout` to `build_timeout` ([#12503](https://github.com/hashicorp/terraform/issues/12503))
* provider/azurem: `azurerm_virtual_machine` and `azurerm_virtual_machine_scale_set` now store has of custom_data not all custom_data ([#12214](https://github.com/hashicorp/terraform/issues/12214))
* provider/azurerm: scale_sets `os_profile_master_password` now marked as sensitive
* provider/azurerm: sql_server `administrator_login_password` now marked as sensitive
* provider/dnsimple: Provider has been upgraded to APIv2 therefore, you will need to use the APIv2 auth token
* provider/google: storage buckets have been updated with the new storage classes. The old classes will continue working as before, but should be migrated as soon as possible, as there's no guarantee they'll continue working forever. ([#12044](https://github.com/hashicorp/terraform/issues/12044))
* provider/google: compute_instance, compute_instance_template, and compute_disk all have a subtly changed logic when specifying an image family as the image; in 0.8.x they would pin to the latest image in the family when the resource is created; in 0.9.x they pass the family to the API and use its behaviour. New input formats are also supported. ([#12223](https://github.com/hashicorp/terraform/issues/12223))
* provider/google: removed the unused and deprecated region field from google_compute_backend_service ([#12663](https://github.com/hashicorp/terraform/issues/12663))
* provider/google: removed the deprecated account_file field for the Google Cloud provider ([#12668](https://github.com/hashicorp/terraform/issues/12668))
* provider/google: removed the deprecated fields from google_project ([#12659](https://github.com/hashicorp/terraform/issues/12659))
FEATURES:
* **Remote Backends:** This is a successor to "remote state" and includes
file-based configuration, an improved setup process (just run `terraform init`),
no more local caching of remote state, and more. ([#11286](https://github.com/hashicorp/terraform/issues/11286))
* **Destroy Provisioners:** Provisioners can now be configured to run
on resource destruction. ([#11329](https://github.com/hashicorp/terraform/issues/11329))
* **State Locking:** State will be automatically locked when supported by the backend.
Backends supporting locking in this release are Local, S3 (via DynamoDB), and Consul. ([#11187](https://github.com/hashicorp/terraform/issues/11187))
* **State Environments:** You can now create named "environments" for states. This allows you to manage distinct infrastructure resources from the same configuration.
* helper/schema: Added Timeouts to allow Provider/Resource developers to expose configurable timeouts for actions ([#12311](https://github.com/hashicorp/terraform/issues/12311))
IMPROVEMENTS:
* core: Data source values can now be used as part of a `count` calculation. ([#11482](https://github.com/hashicorp/terraform/issues/11482))
* core: "terraformrc" can contain env var references with $FOO ([#11929](https://github.com/hashicorp/terraform/issues/11929))
* core: report all errors encountered during config validation ([#12383](https://github.com/hashicorp/terraform/issues/12383))
* command: CLI args can be specified via env vars. Specify `TF_CLI_ARGS` or `TF_CLI_ARGS_name` (where name is the name of a command) to specify additional CLI args ([#11922](https://github.com/hashicorp/terraform/issues/11922))
* command/init: previous behavior is retained, but init now also configures
the new remote backends as well as downloads modules. It is the single
command to initialize a new or existing Terraform configuration.
* command: Display resource state ID in refresh/plan/destroy output ([#12261](https://github.com/hashicorp/terraform/issues/12261))
* provider/aws: AWS Lambda DeadLetterConfig support ([#12188](https://github.com/hashicorp/terraform/issues/12188))
* provider/aws: Return errors from Elastic Beanstalk ([#12425](https://github.com/hashicorp/terraform/issues/12425))
* provider/aws: Set aws_db_cluster to snapshot by default ([#11668](https://github.com/hashicorp/terraform/issues/11668))
* provider/aws: Enable final snapshots for aws_rds_cluster by default ([#11694](https://github.com/hashicorp/terraform/issues/11694))
* provider/aws: Enable snapshotting by default on aws_redshift_cluster ([#11695](https://github.com/hashicorp/terraform/issues/11695))
* provider/aws: Add support for ACM certificates to `api_gateway_domain_name` ([#12592](https://github.com/hashicorp/terraform/issues/12592))
* provider/aws: Add support for IPv6 to aws\_security\_group\_rule ([#12645](https://github.com/hashicorp/terraform/issues/12645))
* provider/aws: Add IPv6 Support to aws\_route\_table ([#12640](https://github.com/hashicorp/terraform/issues/12640))
* provider/aws: Add support for IPv6 to aws\_network\_acl\_rule ([#12644](https://github.com/hashicorp/terraform/issues/12644))
* provider/aws: Add support for IPv6 to aws\_default\_route\_table ([#12642](https://github.com/hashicorp/terraform/issues/12642))
* provider/aws: Add support for IPv6 to aws\_network\_acl ([#12641](https://github.com/hashicorp/terraform/issues/12641))
* provider/aws: Add support for IPv6 in aws\_route ([#12639](https://github.com/hashicorp/terraform/issues/12639))
* provider/aws: Add support for IPv6 to aws\_security\_group ([#12655](https://github.com/hashicorp/terraform/issues/12655))
* provider/aws: Add replace\_unhealthy\_instances to spot\_fleet\_request ([#12681](https://github.com/hashicorp/terraform/issues/12681))
* provider/aws: Remove restriction on running aws\_opsworks\_* on us-east-1 ([#12688](https://github.com/hashicorp/terraform/issues/12688))
* provider/ignition: Migrate all of the igition resources to data sources ([#11851](https://github.com/hashicorp/terraform/issues/11851))
* provider/openstack: Set Availability Zone in Instances ([#12610](https://github.com/hashicorp/terraform/issues/12610))
* provider/openstack: Force Deletion of Instances ([#12689](https://github.com/hashicorp/terraform/issues/12689))
* provider/rancher: Better comparison of compose files ([#12561](https://github.com/hashicorp/terraform/issues/12561))
* provider/azurerm: store only hash of `azurerm_virtual_machine` and `azurerm_virtual_machine_scale_set` custom_data - reduces size of state ([#12214](https://github.com/hashicorp/terraform/issues/12214))
* provider/vault: read vault token from `~/.vault-token` as a fallback for the
* provider/aws: output the task definition name when errors occur during refresh ([#12609](https://github.com/hashicorp/terraform/issues/12609))
* provider/aws: Refresh iam saml provider from state on 404 ([#12602](https://github.com/hashicorp/terraform/issues/12602))
* provider/aws: Add address, port, hosted_zone_id and endpoint for aws_db_instance datasource ([#12623](https://github.com/hashicorp/terraform/issues/12623))
* provider/aws: Allow recreation of `aws_opsworks_user_profile` when the `user_arn` is changed ([#12595](https://github.com/hashicorp/terraform/issues/12595))
* provider/aws: Guard clause to prevent panic on ELB connectionSettings ([#12685](https://github.com/hashicorp/terraform/issues/12685))
* provider/azurerm: bug fix to prevent crashes during azurerm_container_service provisioning ([#12516](https://github.com/hashicorp/terraform/issues/12516))
* provider/datadog: Update to datadog_monitor to use default values ([#12497](https://github.com/hashicorp/terraform/issues/12497))
* provider/datadog: Default notify_no_data on datadog_monitor to false ([#11903](https://github.com/hashicorp/terraform/issues/11903))
* provider/google: Correct the incorrect instance group manager URL returned from GKE ([#4336](https://github.com/hashicorp/terraform/issues/4336))
* provider/google: Fix a plan/apply cycle in IAM policies ([#12387](https://github.com/hashicorp/terraform/issues/12387))
* provider/google: Fix a plan/apply cycle in forwarding rules when only a single port is specified ([#12662](https://github.com/hashicorp/terraform/issues/12662))
* provider/google: Minor correction : "Deleting disk" message in Delete method ([#12521](https://github.com/hashicorp/terraform/issues/12521))
* provider/mysql: Avoid crash on un-interpolated provider cfg ([#12391](https://github.com/hashicorp/terraform/issues/12391))
* provider/ns1: Fix incorrect schema (causing crash) for 'ns1_user.notify' ([#12721](https://github.com/hashicorp/terraform/issues/12721))
* provider/openstack: Handle cases where volumes are disabled ([#12374](https://github.com/hashicorp/terraform/issues/12374))
* provider/openstack: Toggle Creation of Default Security Group Rules ([#12119](https://github.com/hashicorp/terraform/issues/12119))
* provider/openstack: Change Port fixed_ip to a Set ([#12613](https://github.com/hashicorp/terraform/issues/12613))
* provider/openstack: Add network_id to Network data source ([#12615](https://github.com/hashicorp/terraform/issues/12615))
* provider/openstack: Check for ErrDefault500 when creating/deleting pool member ([#12664](https://github.com/hashicorp/terraform/issues/12664))
* provider/rancher: Apply the set value for finish_upgrade to set to prevent recurring plans ([#12545](https://github.com/hashicorp/terraform/issues/12545))
* provider/scaleway: work around API concurrency issue ([#12707](https://github.com/hashicorp/terraform/issues/12707))
* provider/statuscake: use default status code list when updating test ([#12375](https://github.com/hashicorp/terraform/issues/12375))
## 0.9.0 from 0.9.0-beta2 (March 15, 2017)
**This only includes changes from 0.9.0-beta2 to 0.9.0 final. The section above has the complete 0.8.x to 0.9.0 CHANGELOG.**
* provider/aws: `aws_codebuild_project` renamed `timeout` to `build_timeout` ([#12503](https://github.com/hashicorp/terraform/issues/12503))
* provider/azurem: `azurerm_virtual_machine` and `azurerm_virtual_machine_scale_set` now store has of custom_data not all custom_data ([#12214](https://github.com/hashicorp/terraform/issues/12214))
* provider/google: compute_instance, compute_instance_template, and compute_disk all have a subtly changed logic when specifying an image family as the image; in 0.8.x they would pin to the latest image in the family when the resource is created; in 0.9.x they pass the family to the API and use its behaviour. New input formats are also supported. ([#12223](https://github.com/hashicorp/terraform/issues/12223))
* provider/google: removed the unused and deprecated region field from google_compute_backend_service ([#12663](https://github.com/hashicorp/terraform/issues/12663))
* provider/google: removed the deprecated account_file field for the Google Cloud provider ([#12668](https://github.com/hashicorp/terraform/issues/12668))
* provider/google: removed the deprecated fields from google_project ([#12659](https://github.com/hashicorp/terraform/issues/12659))
* provider/azurerm: store only hash of `azurerm_virtual_machine` and `azurerm_virtual_machine_scale_set` custom_data - reduces size of state ([#12214](https://github.com/hashicorp/terraform/issues/12214))
* report all errors encountered during config validation ([#12383](https://github.com/hashicorp/terraform/issues/12383))
* provider/google: Correct the incorrect instance group manager URL returned from GKE ([#4336](https://github.com/hashicorp/terraform/issues/4336))
* provider/google: Fix a plan/apply cycle in IAM policies ([#12387](https://github.com/hashicorp/terraform/issues/12387))
* provider/google: Fix a plan/apply cycle in forwarding rules when only a single port is specified ([#12662](https://github.com/hashicorp/terraform/issues/12662))
* provider/google: storage buckets have been updated with the new storage classes. The old classes will continue working as before, but should be migrated as soon as possible, as there's no guarantee they'll continue working forever. ([#12044](https://github.com/hashicorp/terraform/issues/12044))
* **State Environments:** You can now create named "environments" for states. This allows you to manage distinct infrastructure resources from the same configuration.
* helper/schema: Added Timeouts to allow Provider/Resource developers to expose configurable timeouts for actions ([#12311](https://github.com/hashicorp/terraform/issues/12311))
* provider/aws: Deprecated fields `kinesis_endpoint`&`dynamodb_endpoint` were removed. Use `kinesis`&`dynamodb` inside the `endpoints` block instead. ([#11778](https://github.com/hashicorp/terraform/issues/11778))
* core: Data source values can now be used as part of a `count` calculation. ([#11482](https://github.com/hashicorp/terraform/issues/11482))
* command: CLI args can be specified via env vars. Specify `TF_CLI_ARGS` or `TF_CLI_ARGS_name` (where name is the name of a command) to specify additional CLI args ([#11922](https://github.com/hashicorp/terraform/issues/11922))
* provider/statuscake: Add support for Port in statuscake_test ([#11966](https://github.com/hashicorp/terraform/issues/11966))
BUG FIXES:
* core: Fix a hang that could occur at the end of a Terraform command with custom plugins used ([#12048](https://github.com/hashicorp/terraform/issues/12048))
* command/fmt: Fix incorrect formatting with single line object following complex object ([#12049](https://github.com/hashicorp/terraform/issues/12049))
* command/state: `-backup` flags work with `mv` and `rm` ([#12156](https://github.com/hashicorp/terraform/issues/12156))
* provider/aws: add bucket name to delete error notification ([#11952](https://github.com/hashicorp/terraform/issues/11952))
* provider/aws: Use proper Set for source.Auth in resource_aws_codebuild_project ([#11741](https://github.com/hashicorp/terraform/issues/11741))
* provider/aws: aws_ecs_service should output service name along with err ([#12072](https://github.com/hashicorp/terraform/issues/12072))
* provider/aws: Add VRRP to allowed protocols in network ACL rules ([#12107](https://github.com/hashicorp/terraform/issues/12107))
* provider/aws: Add owner_account option to aws_redshift_cluster ([#12062](https://github.com/hashicorp/terraform/issues/12062))
* provider/aws: Update of inspector_assessment_target should use ARN not Name ([#12115](https://github.com/hashicorp/terraform/issues/12115))
* provider/aws: Fix the panic in ssm_association with parameters ([#12215](https://github.com/hashicorp/terraform/issues/12215))
* provider/aws: Fix update of environment_variable in codebuild_project ([#12169](https://github.com/hashicorp/terraform/issues/12169))
* provider/aws: Refresh aws_autoscaling_schedule from state when autoscaling_group not found ([#12312](https://github.com/hashicorp/terraform/issues/12312))
* provider/aws: No longer ForceNew resource on lambda_function runtime update ([#12329](https://github.com/hashicorp/terraform/issues/12329))
* provider/aws: reading multiple pages of aws_efs_file_system tags ([#12328](https://github.com/hashicorp/terraform/issues/12328))
* provider/aws: Refresh cloudwatch log subscription filter on 404 ([#12333](https://github.com/hashicorp/terraform/issues/12333))
* provider/aws: more details on which s3 bucket had an error ([#12314](https://github.com/hashicorp/terraform/issues/12314))
* provider/azurerm: Ignore case on protocol and allocation types ([#12176](https://github.com/hashicorp/terraform/issues/12176))
* provider/cloudflare: add validation for proxied record types ([#11993](https://github.com/hashicorp/terraform/issues/11993))
* provider/datadog: Adding default values to datadog_monitor ([#12168](https://github.com/hashicorp/terraform/issues/12168))
* provider/google: make local_traffic_selector computed ([#11631](https://github.com/hashicorp/terraform/issues/11631))
* provider/google: Write the raw disk encryption key in the state file to avoid diffs on plan ([#12068](https://github.com/hashicorp/terraform/issues/12068))
* provider/google: fix url map test and update logic ([#12317](https://github.com/hashicorp/terraform/issues/12317))
* provider/openstack: Rename provider to loadbalancer_provider ([#12239](https://github.com/hashicorp/terraform/issues/12239))
* provider/pagerduty: Setting incident_urgency_rule as optional ([#12211](https://github.com/hashicorp/terraform/issues/12211))
* provider/profitbricks: Fixing how primary_nic is added to profitbricks server ([#12197](https://github.com/hashicorp/terraform/issues/12197))
* state/azure: add environment option for non-public cloud usage ([#12364](https://github.com/hashicorp/terraform/issues/12364))
* provider/aws: `kinesis_endpoint`&`dynamodb_endpoint` fields in the provider schema were deprecated in favour of `kinesis`&`dynamodb` inside the `endpoints` block. Deprecated fields will be removed in 0.9 ([#11768](https://github.com/hashicorp/terraform/issues/11768))
* provider/aws: Update aws_ssm_document to include `document_type`, `latest_version` and `default_version` ([#11671](https://github.com/hashicorp/terraform/issues/11671))
* provider/aws: Support import of aws_opsworks_instance ([#11783](https://github.com/hashicorp/terraform/issues/11783))
* provider/aws Add S3 bucket object tag support ([#11344](https://github.com/hashicorp/terraform/issues/11344))
* provider/aws: Add validation for aws_iam_role ([#11915](https://github.com/hashicorp/terraform/issues/11915))
* provider/fastly Allows for conditional settings across fastly ([#11843](https://github.com/hashicorp/terraform/issues/11843))
* provider/openstack: Allow OpenStack SSL certs + keys to take path or content ([#10271](https://github.com/hashicorp/terraform/issues/10271))
* provider/pagerduty: Add support for `incident_urgency_rule`, `support_hours` and `scheduled_actions` to `pagerduty_service` ([#11856](https://github.com/hashicorp/terraform/issues/11856))
* provider/vault: Use Vault api.DefaultConfig() ([#11523](https://github.com/hashicorp/terraform/issues/11523))
Bug FIXES:
* core: resources that depend on create-before-destroy resources don't create cycles ([#11753](https://github.com/hashicorp/terraform/issues/11753))
* core: create-before-destroy resources with a count > 1 create proper edges ([#11753](https://github.com/hashicorp/terraform/issues/11753))
* core: fix "diffs didn't match issue" for removing or empty collections that force new ([#11732](https://github.com/hashicorp/terraform/issues/11732))
* core: module sources ended in archive extensions without a "." won't be treated as archives ([#11438](https://github.com/hashicorp/terraform/issues/11438))
* core: destroy ordering of resources within modules is correct ([#11765](https://github.com/hashicorp/terraform/issues/11765))
* core: Fix crash if count interpolates into a non-int ([#11864](https://github.com/hashicorp/terraform/issues/11864))
* provider/aws: Respect 400 returned from AWS API on RDS Cluster termination ([#11795](https://github.com/hashicorp/terraform/issues/11795))
* provider/aws: Raise the codebuild_project create timeout ([#11777](https://github.com/hashicorp/terraform/issues/11777))
* provider/aws: Make aws_dms_endpoint database_name optional ([#11792](https://github.com/hashicorp/terraform/issues/11792))
* provider/aws: Bump Create and Delete timeouts to 60 mins on directory_service ([#11793](https://github.com/hashicorp/terraform/issues/11793))
* provider/aws: aws_codecommit_trigger fix typo that causes serialization to fail when events is non-empty ([#11839](https://github.com/hashicorp/terraform/issues/11839))
* provider/aws: Fix bug to allow update of maintenance_window in elasticache_replication_group ([#11850](https://github.com/hashicorp/terraform/issues/11850))
* provider/azurerm: Don't push an empty set of ssh keys to virtual machine or they cannot be ammended ([#11804](https://github.com/hashicorp/terraform/issues/11804))
* provider/azurerm: Refresh from state when VM Extension Resource not found ([#11894](https://github.com/hashicorp/terraform/issues/11894))
* provider/cloudstack: Ensure consistent hashes of `cloudstack_port_forward` forward items. ([#11546](https://github.com/hashicorp/terraform/issues/11546))
* provider/google: set additional_zones to computed and disallow the original zone from appearing in the list ([#11650](https://github.com/hashicorp/terraform/issues/11650))
* provider/google: set subnetwork_project to computed ([#11646](https://github.com/hashicorp/terraform/issues/11646))
* core: Interaction with Atlas now supports the `ATLAS_TLS_NOVERIFY` environment variable ([#11576](https://github.com/hashicorp/terraform/issues/11576))
* provider/aws: Add EBS Volume support for EMR Instance Groups ([#11411](https://github.com/hashicorp/terraform/issues/11411))
* provider/aws: Add support for policy to AWS provider assume_role ([#11501](https://github.com/hashicorp/terraform/issues/11501))
* provider/aws: Add support for more sns_topic_subscription parameters on import command ([#10408](https://github.com/hashicorp/terraform/issues/10408))
* provider/aws: Add support for Sever Side Encryption with default S3 KMS key to `aws_s3_bucket_object` ([#11261](https://github.com/hashicorp/terraform/issues/11261))
* provider/aws: Add support for Cross Region RDS Cluster Replica ([#11428](https://github.com/hashicorp/terraform/issues/11428))
* provider/aws: Add sensitive attribute in master_password ([#11584](https://github.com/hashicorp/terraform/issues/11584))
* provider/aws: Application Auto Scaling now supports scaling an Amazon EC2 Spot fleet ([#8697](https://github.com/hashicorp/terraform/issues/8697))
* provider/aws: Add tag support to DynamoDb tables ([#11617](https://github.com/hashicorp/terraform/issues/11617))
* provider/aws: Provide the certificate ID in the aws data source ([#11693](https://github.com/hashicorp/terraform/issues/11693))
* provider/aws: Wait for instance_profile creation to complete ([#11678](https://github.com/hashicorp/terraform/issues/11678))
* provider/azurerm: Add support for scale sets overprovision ([#11516](https://github.com/hashicorp/terraform/issues/11516))
* provider/azurerm: support import for load balancer and sub resources ([#11610](https://github.com/hashicorp/terraform/issues/11610))
* provider/rancher: allow for importing resources using environment ID to target ([#11688](https://github.com/hashicorp/terraform/issues/11688))
BUG FIXES:
* core: Remove missed subfields when parent list is removed ([#11498](https://github.com/hashicorp/terraform/issues/11498))
* command/fmt: Trailing blocks of comments at the end of files are formatted properly ([#11585](https://github.com/hashicorp/terraform/issues/11585))
* provider/aws: Fix issue with `path` not updated when modifying AWS API Gateway Resource ([#11443](https://github.com/hashicorp/terraform/issues/11443))
* provider/aws: Fix AWS Lambda Qualifier Regexp for `aws_lambda_permission` ([#11383](https://github.com/hashicorp/terraform/issues/11383))
* provider/aws: allow destroy of LB stickiness policy with missing LB ([#11462](https://github.com/hashicorp/terraform/issues/11462))
* provider/aws: Fix validation issues for onceAWeek and onceADay validation functions ([#11679](https://github.com/hashicorp/terraform/issues/11679))
* provider/aws: Return route_table_id from aws_route_table data source ([#11703](https://github.com/hashicorp/terraform/issues/11703))
* provider/aws: validate aws_alb_target_group name is less than 32 characters ([#11699](https://github.com/hashicorp/terraform/issues/11699))
* provider/azurerm: Scale Sets Load balancer pools should not be computed ([#11516](https://github.com/hashicorp/terraform/issues/11516))
* provider/azurerm: Scale Sets ip configuration handling and update support for load balancer backend pools. ([#11516](https://github.com/hashicorp/terraform/issues/11516))
* provider/azurerm: check if lb sub resources exist when reading ([#11553](https://github.com/hashicorp/terraform/issues/11553))
* provider/google: Fix master_instance_name to prevent slave rebuilds ([#11477](https://github.com/hashicorp/terraform/issues/11477))
* provider/google: Refresh google_compute_instance machine_type on read ([#11645](https://github.com/hashicorp/terraform/issues/11645))
* provider/google: Added forceNew on accessConfig in google_compute_instance_template ([#11548](https://github.com/hashicorp/terraform/issues/11548))
* provider/ignition: Allow to add authorized keys without user creation ([#11406](https://github.com/hashicorp/terraform/issues/11406))
* provider/ignition: mount and path are mutually exclusive ([#11409](https://github.com/hashicorp/terraform/issues/11409))
* provider/ns1: Fix "use_client_subnet" in ns1_record ([#11368](https://github.com/hashicorp/terraform/issues/11368))
* provider/openstack: Remove Default Security Group Rules on Create ([#11466](https://github.com/hashicorp/terraform/issues/11466))
* provider/pagerduty: Allow timeouts to be disabled (pagerduty_service) ([#11483](https://github.com/hashicorp/terraform/issues/11483))
* provider/rancher: Use environment specific client for accessing resources ([#11503](https://github.com/hashicorp/terraform/issues/11503))
* provider/rancher: Refresh rancher stack from state on delete ([#11539](https://github.com/hashicorp/terraform/issues/11539))
* provider/rancher: Refresh rancher token and registry from state on not found ([#11543](https://github.com/hashicorp/terraform/issues/11543))
* provider/rancher: return error when Rancher template not found ([#11544](https://github.com/hashicorp/terraform/issues/11544))
* provider/rancher: rancher_stack set docker_compose and rancher_compose ([#11550](https://github.com/hashicorp/terraform/issues/11550))
* provider/rancher: Handle deleted/purged resources from Rancher ([#11607](https://github.com/hashicorp/terraform/issues/11607))
* provider/statuscake: Remove computed from statuscake_test timeout parameter ([#11541](https://github.com/hashicorp/terraform/issues/11541))
* provider/vsphere: vSphere virtual machine don't ignore VM power on errors ([#11604](https://github.com/hashicorp/terraform/issues/11604))
* provisioner/remote-exec: Revert change in 0.8.5 that treated each line as a script since that doesn't work for stateful scripts. ([#11692](https://github.com/hashicorp/terraform/issues/11692))
* provisioner/chef: Attributes JSON coming from computed source validates ([#11502](https://github.com/hashicorp/terraform/issues/11502))
* provider/google: `google_project` has undergone significant changes. Existing configs and state should continue to work as they always have, but new configs and state will exhibit some new behaviour, including actually creating and deleting projects, instead of just referencing them. See https://www.terraform.io/docs/providers/google/r/google_project.html for more details.
* provider/aws: Add Support for aws_cloudwatch_metric_alarm extended statistic ([#11193](https://github.com/hashicorp/terraform/issues/11193))
* provider/aws: Make the type of a route53_record modifiable without recreating the resource ([#11164](https://github.com/hashicorp/terraform/issues/11164))
* provider/aws: Add Placement Strategy to aws_ecs_service resource ([#11201](https://github.com/hashicorp/terraform/issues/11201))
* provider/aws: Add support for placement_constraint to aws_ecs_service ([#11242](https://github.com/hashicorp/terraform/issues/11242))
* provider/aws: allow ALB target group stickiness to be enabled/disabled ([#11251](https://github.com/hashicorp/terraform/issues/11251))
* provider/aws: ALBs now wait for provisioning to complete before proceeding ([#11333](https://github.com/hashicorp/terraform/issues/11333))
* provider/aws: Add support for setting MSSQL Timezone in aws_db_instance ([#11247](https://github.com/hashicorp/terraform/issues/11247))
* provider/aws: CloudFormation YAML template support ([#11121](https://github.com/hashicorp/terraform/issues/11121))
* provider/aws: Remove hardcoded https from the ecr repository ([#11307](https://github.com/hashicorp/terraform/issues/11307))
* provider/aws: Implement CloudFront Lambda Function Associations ([#11291](https://github.com/hashicorp/terraform/issues/11291))
* provider/aws: Remove MaxFrameRate default on ElasticTranscoderPreset ([#11340](https://github.com/hashicorp/terraform/issues/11340))
* provider/aws: Allow ARN Identifier to be set for different partitions ([#11359](https://github.com/hashicorp/terraform/issues/11359))
* provider/aws: Allow bypassing region validation ([#11358](https://github.com/hashicorp/terraform/issues/11358))
* provider/aws: Added a s3_bucket domain name attribute ([#10088](https://github.com/hashicorp/terraform/issues/10088))
* provider/aws: Add DiffSupressFunction to aws_db_instance's engine_version ([#11369](https://github.com/hashicorp/terraform/issues/11369))
* provider/archive: Adding support for multiple source contents ([#11271](https://github.com/hashicorp/terraform/issues/11271))
* provider/azurerm: add caching support for virtual_machine data_disks ([#11142](https://github.com/hashicorp/terraform/issues/11142))
* provider/azurerm: make lb sub resources idempotent ([#11128](https://github.com/hashicorp/terraform/issues/11128))
* provider/cloudflare: Add verification for record types and content ([#11197](https://github.com/hashicorp/terraform/issues/11197))
* provider/datadog: Add aggregator method to timeboard graph resource ([#11206](https://github.com/hashicorp/terraform/issues/11206))
* provider/fastly Add request_condition to backend definition ([#11238](https://github.com/hashicorp/terraform/issues/11238))
* provider/google: Add subnetwork_project field to enable cross-project networking in instance templates ([#11110](https://github.com/hashicorp/terraform/issues/11110))
* provider/google: Add support for encrypting a disk ([#11167](https://github.com/hashicorp/terraform/issues/11167))
* provider/google: Add support for session_affinity to google_compute_region_backend_service ([#11228](https://github.com/hashicorp/terraform/issues/11228))
* provider/google: Allow additional zones to be configured in GKE ([#11018](https://github.com/hashicorp/terraform/issues/11018))
* provider/ignition: Allow empty dropin and content for systemd_units ([#11327](https://github.com/hashicorp/terraform/issues/11327))
* provider/openstack: LoadBalancer Security Groups ([#11074](https://github.com/hashicorp/terraform/issues/11074))
* command/fmt: Multiple `#` comments won't be separated by newlines. ([#11209](https://github.com/hashicorp/terraform/issues/11209))
* command/fmt: Lists with a heredoc element that starts on the same line as the opening brace is formatted properly. ([#11208](https://github.com/hashicorp/terraform/issues/11208))
* command/import: Provider configuration inheritance into modules works properly ([#11393](https://github.com/hashicorp/terraform/issues/11393))
* provider/aws: Allow creating aws_codecommit repository outside of us-east-1 ([#11177](https://github.com/hashicorp/terraform/issues/11177))
* provider/aws: Fix issue destroying or updating CloudFront due to missing Lambda Function Associations parameters ([#11291](https://github.com/hashicorp/terraform/issues/11291))
* provider/aws: Correct error messages are now returned if an `aws_autoscaling_lifecycle_hook` fails during creation ([#11360](https://github.com/hashicorp/terraform/issues/11360))
* provider/aws: Fix issue updating/destroying Spot Fleet requests when using `terminate_instances_with_expiration` ([#10953](https://github.com/hashicorp/terraform/issues/10953))
* provider/azurerm: use configured environment for storage clients ([#11159](https://github.com/hashicorp/terraform/issues/11159))
* provider/google: removes region param from google_compute_backend_service ([#10903](https://github.com/hashicorp/terraform/issues/10903))
* provider/ignition: allowing empty systemd.content when a dropin is provided ([#11216](https://github.com/hashicorp/terraform/issues/11216))
* provider/openstack: Increase deletion timeout for router interfaces ([#11250](https://github.com/hashicorp/terraform/issues/11250))
* provider/scaleway: Rename Scaleway provider parameters to match more closely to the API ([#10874](https://github.com/hashicorp/terraform/issues/10874))
* provider/vault: Remove user input for optional vault provider fields ([#11082](https://github.com/hashicorp/terraform/issues/11082))
* provider/vsphere: Set deviceID to 0 if one 1 network interface in vsphere_virtual_machine ([#8276](https://github.com/hashicorp/terraform/issues/8276))
* provisioner/remote-exec: fail on first inline script with bad exit code ([#11155](https://github.com/hashicorp/terraform/issues/11155))
* We have removed the `Arukas` provider that was added in v0.8.3 for this release. Unfortunately we found the
new provider included a dependency that would not compile and run on Windows operating systems. For now the
provider has been removed and we hope to work to reintroduce it for all platforms in the near future. Going forward we will also be taking additional steps in our build testing to ensure Terraform builds on all platforms before release.
* command/fmt: Show filename on parse error ([#10923](https://github.com/hashicorp/terraform/issues/10923))
* provider/archive: `archive_file` now exports `output_md5` attribute in addition to existing SHA1 and Base64 SHA256 hashes. ([#10851](https://github.com/hashicorp/terraform/issues/10851))
* provider/aws: Add `most_recent` to the `ebs_snapshot` data source ([#10986](https://github.com/hashicorp/terraform/issues/10986))
* provider/aws: Add support for instance tenancy in `aws_opsworks_instance` ([#10885](https://github.com/hashicorp/terraform/issues/10885))
* provider/aws: Added a validation for security group rule types ([#10864](https://github.com/hashicorp/terraform/issues/10864))
* provider:aws: Add support for updating aws_emr_cluster parameters ([#11008](https://github.com/hashicorp/terraform/issues/11008))
* provider/aws: Add Placement Constraints to `aws_ecs_task_definition` ([#11030](https://github.com/hashicorp/terraform/issues/11030))
* provider/aws: Increasing timeout for redshift cluster creation to 75 minutes ([#11041](https://github.com/hashicorp/terraform/issues/11041))
* provider/aws: Add support for content_handling to aws_api_gateway_integration_response ([#11002](https://github.com/hashicorp/terraform/issues/11002))
* provider/aws: Add S3 bucket name validation ([#11116](https://github.com/hashicorp/terraform/issues/11116))
* provider/aws: Add Route53 Record type validation ([#11119](https://github.com/hashicorp/terraform/issues/11119))
* provider/azurerm: support non public clouds ([#11026](https://github.com/hashicorp/terraform/issues/11026))
* provider/azurerm: Azure resource providers which are already registered are no longer re-registered. ([#10991](https://github.com/hashicorp/terraform/issues/10991))
* provider/docker: Add network create --internal flag support ([#10932](https://github.com/hashicorp/terraform/issues/10932))
* provider/docker: Add support for a list of pull_triggers within the docker_image resource. ([#10845](https://github.com/hashicorp/terraform/issues/10845))
* provider/pagerduty Add delete support to `pagerduty_service_integration` ([#10891](https://github.com/hashicorp/terraform/issues/10891))
* provider/postgresql Add permissions support to `postgresql_schema` as nested `policy` attributes ([#10808](https://github.com/hashicorp/terraform/issues/10808))
* core: Disallow root modules named "root" as a temporary workaround ([#11099](https://github.com/hashicorp/terraform/issues/11099))
* command/fmt: Lists of heredocs format properly ([#10947](https://github.com/hashicorp/terraform/issues/10947))
* command/graph: Fix crash when `-type=legacy` ([#11095](https://github.com/hashicorp/terraform/issues/11095))
* provider/aws: Guard against nil change output in `route53_zone` that causes panic ([#10798](https://github.com/hashicorp/terraform/issues/10798))
* provider/aws: Reworked validateArn function to handle empty values ([#10833](https://github.com/hashicorp/terraform/issues/10833))
* provider/aws: Set `aws_autoscaling_policy``metric_aggregation_type` to be Computed ([#10904](https://github.com/hashicorp/terraform/issues/10904))
* provider/aws: `storage_class` is now correctly treated as optional when configuring replication for `aws_s3_bucket` resources. ([#10921](https://github.com/hashicorp/terraform/issues/10921))
* provider/aws: `user_data` on `aws_launch_configuration` resources is only base 64 encoded if the value provided is not already base 64 encoded. ([#10871](https://github.com/hashicorp/terraform/issues/10871))
* provider/aws: Add snapshotting to the list of pending state for elasticache ([#10965](https://github.com/hashicorp/terraform/issues/10965))
* provider/aws: Add support for updating tags in aws_emr_cluster ([#11003](https://github.com/hashicorp/terraform/issues/11003))
* provider/aws: Fix the normalization of AWS policy statements ([#11009](https://github.com/hashicorp/terraform/issues/11009))
* provider/aws: data_source_aws_iam_server_certificate latest should be bool not string causes panic ([#11016](https://github.com/hashicorp/terraform/issues/11016))
* provider/aws: Fix typo in aws_redshift_cluster causing security groups to not allow update ([#11025](https://github.com/hashicorp/terraform/issues/11025))
* provider/aws: Set `key_name` in `aws_key_pair` if omited in configuration ([#10987](https://github.com/hashicorp/terraform/issues/10987))
* provider/aws: Updating the aws_efs_mount_target dns_name ([#11023](https://github.com/hashicorp/terraform/issues/11023))
* provider/aws: Validate window time format for snapshot times and backup windows on RDS and ElastiCache resources ([#11089](https://github.com/hashicorp/terraform/issues/11089))
* provider/aws: aws_db_instance restored from snapshot had problem with subnet_group ([#11050](https://github.com/hashicorp/terraform/issues/11050))
* provider/aws: Allow disabled access_log in ELB ([#11120](https://github.com/hashicorp/terraform/issues/11120))
* provider/azurerm: fix update protocol for lb_probe ([#11125](https://github.com/hashicorp/terraform/issues/11125))
* provider/google: Fix backwards incompatibility around create_timeout in instances ([#10858](https://github.com/hashicorp/terraform/issues/10858))
* provider/google: google_compute_instance_group_manager update_strategy not properly read ([#10174](https://github.com/hashicorp/terraform/issues/10174))
* provider/openstack: Handle `PENDING_UPDATE` status with LBaaS v2 members ([#10875](https://github.com/hashicorp/terraform/issues/10875))
* provider/rancher: Add 'finishing-upgrade' state to rancher stack ([#11019](https://github.com/hashicorp/terraform/issues/11019))
*`aws_lambda_function` Please note that `runtime` is now a required field as AWS have deprecated the use of nodejs 0.10 in lambda functions ([#9724](https://github.com/hashicorp/terraform/issues/9724))
* provider/aws: Add support for BinaryMediaTypes and ContentHandling to AWS API Gateway ([#10776](https://github.com/hashicorp/terraform/issues/10776))
* provider/aws: Deprecated aws_lambda_function nodejs runtime in favor of nodejs4.3 ([#9724](https://github.com/hashicorp/terraform/issues/9724))
* provider/aws: Support updating of aws_db_instance db_subnet_group_name ([#10818](https://github.com/hashicorp/terraform/issues/10818))
* provider/aws: Allow update to RDS password when restoring from snapshot ([#8622](https://github.com/hashicorp/terraform/issues/8622))
* provider/azurerm: add support for tags to dns_zone ([#10750](https://github.com/hashicorp/terraform/issues/10750))
* provider/pagerduty pagerduty_schedule - support for start_day_of_week (schedule restriction) ([#10069](https://github.com/hashicorp/terraform/issues/10069))
* state/remote/swift: add support for token authentication ([#10866](https://github.com/hashicorp/terraform/issues/10866))
* core: Improve validation for provider aliases to allow inheritance in moduels. ([#10807](https://github.com/hashicorp/terraform/issues/10807))
* core: Math operations always prefer floating point if an argument is floating point. ([#10886](https://github.com/hashicorp/terraform/issues/10886))
* core: Strings are implicitly converted to integers/floats for comparison. ([#10886](https://github.com/hashicorp/terraform/issues/10886))
* provider/aws: Fixed crash in `data_source_ami` with empty `owner` value ([#10763](https://github.com/hashicorp/terraform/issues/10763))
* provider/aws: Require `master_username` and `master_password` if no snapshot given in Redshift Cluster ([#9837](https://github.com/hashicorp/terraform/issues/9837))
* provider/azurerm: fix network_interface.ip_configuration hash for load balancers ([#10834](https://github.com/hashicorp/terraform/issues/10834))
* provider/docker: Fix regression, 'cert_path' stop working ([#10801](https://github.com/hashicorp/terraform/issues/10801))
* provider/google: Use node_version during google_container_cluster creation ([#10817](https://github.com/hashicorp/terraform/issues/10817))
* command/plan: Show warning when a plan file is given as input to make behavior clear. ([#10639](https://github.com/hashicorp/terraform/issues/10639))
* provider/aws: Support Automatic Rollback of CodeDeploy deployments and CloudWatch Alarms for a Deployment Group ([#9039](https://github.com/hashicorp/terraform/issues/9039))
* provider/aws: Add support for termination protection and autotermination to EMR ([#10252](https://github.com/hashicorp/terraform/issues/10252))
* provider/aws: Add "no_device" support to ephemeral block devices ([#10547](https://github.com/hashicorp/terraform/issues/10547))
* provider/cloudstack: Add option to set a custom `network_domain` for `cloudstack_network` ([#10638](https://github.com/hashicorp/terraform/issues/10638))
* provider/cloudstack: Support using secondary IP addresses with the `cloudstack_static_nat` resource ([#10420](https://github.com/hashicorp/terraform/issues/10420))
* provider/cloudstack: Support using secondary IP addresses with the `cloudstack_port_forward` resource ([#10638](https://github.com/hashicorp/terraform/issues/10638))
* provider/google: Add Service Accounts resource ([#9946](https://github.com/hashicorp/terraform/issues/9946))
* provider/google: Instances and templates now both support `metadata_startup_script` and `metadata.startup-script`. ([#10537](https://github.com/hashicorp/terraform/issues/10537))
* provider/google: Added support for session affinity to compute_backend_service ([#10387](https://github.com/hashicorp/terraform/issues/10387))
* provider/google: Projects are now importable ([#10469](https://github.com/hashicorp/terraform/issues/10469))
* state/remote/swift: Add support for versioning state file in swift and expiring versioned state ([#10055](https://github.com/hashicorp/terraform/issues/10055))
BUG FIXES:
* core: Escape sequences in interpolations work in every case. ([#8709](https://github.com/hashicorp/terraform/issues/8709))
* core: Maps in outputs with computed values are no longer removed. ([#9549](https://github.com/hashicorp/terraform/issues/9549))
* core: Direct indexing into a computed list no longer errors. ([#10657](https://github.com/hashicorp/terraform/issues/10657))
* core: Validate fails on invalid keys in `variable` blocks. ([#10658](https://github.com/hashicorp/terraform/issues/10658))
* core: Validate that only a single `lifecycle` block exists per rource. ([#10656](https://github.com/hashicorp/terraform/issues/10656))
* core: When destroying, the resources of a provider that depends on another resource are destroyed first. ([#10659](https://github.com/hashicorp/terraform/issues/10659))
* core: Catch parse errors for null characters mid-file ([#9134](https://github.com/hashicorp/terraform/issues/9134))
* core: Remove extra dot from state command backup files ([#10300](https://github.com/hashicorp/terraform/issues/10300))
* core: Validate data sources do not have provisioners ([#10318](https://github.com/hashicorp/terraform/issues/10318))
* core: Disable checkpoint settings take effect ([#10206](https://github.com/hashicorp/terraform/issues/10206))
* core: Changed attribute console output shows up on Windows. ([#10417](https://github.com/hashicorp/terraform/issues/10417))
* core: Destroying deposed resources in create before destroy waits until the creation step of its specific index. (0.8 regression) ([#10416](https://github.com/hashicorp/terraform/issues/10416))
* core: Certain invalid configurations will no longer print "illegal". ([#10448](https://github.com/hashicorp/terraform/issues/10448))
* core: Fix a crash that could occur when multiple deposed instances exist. ([#10504](https://github.com/hashicorp/terraform/issues/10504))
* core: Fix a diff mismatch error that could happen when a resource depends on a count resource being decreased. ([#10522](https://github.com/hashicorp/terraform/issues/10522))
* core: On Unix machines if `getent` is not available, fall back to shell to find home dir. ([#10515](https://github.com/hashicorp/terraform/issues/10515))
* command/fmt: Multiline comments aren't indented every fmt. ([#6524](https://github.com/hashicorp/terraform/issues/6524))
* communicator/ssh: Avoid race that could cause parallel remote execs on the same host to overwrite each other ([#10549](https://github.com/hashicorp/terraform/issues/10549))
* provider/aws: Added Lambda function guard when needed attributes are not set ([#10663](https://github.com/hashicorp/terraform/issues/10663))
* provider/aws: Allow import of aws_security_groups with more than one source_security_group_id rule ([#9477](https://github.com/hashicorp/terraform/issues/9477))
* provider/aws: Allow setting the DB Instance name when restoring from a snapshot ([#10664](https://github.com/hashicorp/terraform/issues/10664))
* provider/aws: Do not return a root device for instance store backed AMIs. ([#9483](https://github.com/hashicorp/terraform/issues/9483))
* provider/aws: resource_aws_opsworks_application does not accept document_root parameter ([#10477](https://github.com/hashicorp/terraform/issues/10477))
* provider/aws: bug fix when specifying level on aws_opsworks_permission ([#10394](https://github.com/hashicorp/terraform/issues/10394))
* provider/aws: cloudfront distribution 404 should mark as gone ([#10281](https://github.com/hashicorp/terraform/issues/10281))
* provider/aws: Assign correct number of core instances (n-1) to aws-emr-cluster on update ([#10529](https://github.com/hashicorp/terraform/issues/10529))
* provider/aws: Allow update of Service role on a CodeDeploy deployment group ([#9866](https://github.com/hashicorp/terraform/issues/9866))
* provider/aws: fixed the api_gw_domain_name replace operation ([#10179](https://github.com/hashicorp/terraform/issues/10179))
* provider/aws: Forces the API GW domain name certificates to recreate the resource ([#10588](https://github.com/hashicorp/terraform/issues/10588))
* provider/aws: Validate `effect` in aws_iam_policy_document data source ([#10021](https://github.com/hashicorp/terraform/issues/10021))
* provider/azurerm: Prevent null reference when reading boot_diagnostics settings in azurerm_virtual_machine ([#10283](https://github.com/hashicorp/terraform/issues/10283))
* provider/azurerm: azurerm_availability_set not is ForceNew for UpdateDomain and FaultDomain ([#10545](https://github.com/hashicorp/terraform/issues/10545))
* provider/azurerm: fix servicebus_topic max_size_in_megabytes for premium namespaces ([#10611](https://github.com/hashicorp/terraform/issues/10611))
* command/plan: Show warning when a plan file is given as input to make behavior clear. ([#10639](https://github.com/hashicorp/terraform/issues/10639))
* core: Maps across multiple input sources (files, CLI, env vars) are merged. ([#10654](https://github.com/hashicorp/terraform/issues/10654))
* provider/aws: Add support for AWS CA Central 1 Region ([#10618](https://github.com/hashicorp/terraform/issues/10618))
* provider/aws: Support MFA delete for s3 bucket versioning ([#10020](https://github.com/hashicorp/terraform/issues/10020))
* provider/aws: Enable DeleteOnTermination in ENI when created by spot fleet ([#9922](https://github.com/hashicorp/terraform/issues/9922))
* provider/cloudstack: Add option to set a custom `network_domain` for `cloudstack_network` ([#10638](https://github.com/hashicorp/terraform/issues/10638))
* provider/cloudstack: Support using secondary IP addresses with the `cloudstack_port_forward` resource ([#10638](https://github.com/hashicorp/terraform/issues/10638))
* core: Direct indexing into a computed list no longer errors. ([#10657](https://github.com/hashicorp/terraform/issues/10657))
* core: Validate fails on invalid keys in `variable` blocks. ([#10658](https://github.com/hashicorp/terraform/issues/10658))
* core: Validate that only a single `lifecycle` block exists per rource. ([#10656](https://github.com/hashicorp/terraform/issues/10656))
* core: When destroying, the resources of a provider that depends on another resource are destroyed first. ([#10659](https://github.com/hashicorp/terraform/issues/10659))
* provider/aws: Added Lambda function guard when needed attributes are not set ([#10663](https://github.com/hashicorp/terraform/issues/10663))
* provider/aws: Allow import of aws_security_groups with more than one source_security_group_id rule ([#9477](https://github.com/hashicorp/terraform/issues/9477))
* provider/aws: Allow setting the DB Instance name when restoring from a snapshot ([#10664](https://github.com/hashicorp/terraform/issues/10664))
* provider/openstack: Detect Region for Importing Resources ([#10509](https://github.com/hashicorp/terraform/issues/10509))
* provider/google: Instances and templates now both support `metadata_startup_script` and `metadata.startup-script`. ([#10537](https://github.com/hashicorp/terraform/issues/10537))
* core: Fix a diff mismatch error that could happen when a resource depends on a count resource being decreased. ([#10522](https://github.com/hashicorp/terraform/issues/10522))
* core: On Unix machines if `getent` is not available, fall back to shell to find home dir. ([#10515](https://github.com/hashicorp/terraform/issues/10515))
* communicator/ssh: Avoid race that could cause parallel remote execs on the same host to overwrite each other ([#10549](https://github.com/hashicorp/terraform/issues/10549))
* provider/aws: cloudfront distribution 404 should mark as gone ([#10281](https://github.com/hashicorp/terraform/issues/10281))
* provider/aws: Assign correct number of core instances (n-1) to aws-emr-cluster on update ([#10529](https://github.com/hashicorp/terraform/issues/10529))
* provider/aws: Allow update of Service role on a CodeDeploy deployment group ([#9866](https://github.com/hashicorp/terraform/issues/9866))
* provider/aws: fixed the api_gw_domain_name replace operation ([#10179](https://github.com/hashicorp/terraform/issues/10179))
* provider/aws: Forces the API GW domain name certificates to recreate the resource ([#10588](https://github.com/hashicorp/terraform/issues/10588))
* provider/aws: Validate `effect` in aws_iam_policy_document data source ([#10021](https://github.com/hashicorp/terraform/issues/10021))
* provider/azurem: azurerm_availability_set not is ForceNew for UpdateDomain and FaultDomain ([#10545](https://github.com/hashicorp/terraform/issues/10545))
* provider/azurerm: fix servicebus_topic max_size_in_megabytes for premium namespaces ([#10611](https://github.com/hashicorp/terraform/issues/10611))
* provider/datadog: Refactor monitor tags to a list instead of a map. ([#10570](https://github.com/hashicorp/terraform/issues/10570))
* provider/datadog 9869: Validate credentials when initialising client. ([#10567](https://github.com/hashicorp/terraform/issues/10567))
* provider/openstack: Fix Ordering of Port Allowed Address Pairs ([#10250](https://github.com/hashicorp/terraform/issues/10250))
* provider/aws: Support Automatic Rollback of CodeDeploy deployments and CloudWatch Alarms for a Deployment Group ([#9039](https://github.com/hashicorp/terraform/issues/9039))
* provider/aws: Allow importing of aws_iam_role, aws_iam_role_policy and aws_iam_policy ([#9398](https://github.com/hashicorp/terraform/issues/9398))
* provider/aws: Added s3 bucket region attribute management ([#10482](https://github.com/hashicorp/terraform/issues/10482))
* provider/azurerm: support import of routes, fix route_table ([#10389](https://github.com/hashicorp/terraform/issues/10389))
* provider/azurerm: create common schema for location field, add diff suppress ([#10409](https://github.com/hashicorp/terraform/issues/10409))
* provider/postgresql: Added 'connect_timeout' argument to provider 'postgresql' ([#10380](https://github.com/hashicorp/terraform/issues/10380))
* provider/cloudstack: Support using secondary IP addresses with the `cloudstack_static_nat` resource ([#10420](https://github.com/hashicorp/terraform/issues/10420))
* provider/google: Added support for session affinity to compute_backend_service ([#10387](https://github.com/hashicorp/terraform/issues/10387))
* provider/google: Projects are now importable ([#10469](https://github.com/hashicorp/terraform/issues/10469))
* core: Changed attribute console output shows up on Windows. ([#10417](https://github.com/hashicorp/terraform/issues/10417))
* core: Destroying deposed resources in create before destroy waits until the creation step of its specific index. (0.8 regression) ([#10416](https://github.com/hashicorp/terraform/issues/10416))
* core: Certain invalid configurations will no longer print "illegal". ([#10448](https://github.com/hashicorp/terraform/issues/10448))
* core: Fix a crash that could occur when multiple deposed instances exist. ([#10504](https://github.com/hashicorp/terraform/issues/10504))
* command/console: variable access works ([#10446](https://github.com/hashicorp/terraform/issues/10446))
* provider/aws: Do not return a root device for instance store backed AMIs. ([#9483](https://github.com/hashicorp/terraform/issues/9483))
* provider/aws: resource_aws_opsworks_application does not accept document_root parameter ([#10477](https://github.com/hashicorp/terraform/issues/10477))
* provider/aws: bug fix when specifying level on aws_opsworks_permission ([#10394](https://github.com/hashicorp/terraform/issues/10394))
* The chef provider now accepts `key_material` as an alternative to `private_key_pem`. The `private_key_pem` attribute will be deprecated in a future release
* The `template_file` resource no longer accepts a direct file path for the `template` attribute. You may either specify a path wrapped in a `file` function or specify a file path with the `filepath` attribute. This was deprecated during 0.7.x.
* state/remote/swift: Add support for versioning state file in swift and expiring versioned state ([#10055](https://github.com/hashicorp/terraform/issues/10055))
* provider/aws: Added `retry_duration` to `redshift_configuration` in `kinesis_firehose_delivery_stream` ([#10113](https://github.com/hashicorp/terraform/issues/10113))
* provider/openstack: Instance `user_data` will now detect if input is already Base64-encode ([#9966](https://github.com/hashicorp/terraform/issues/9966))
* provider/aws: Fixed ES buffering_interval option in `kinesis_firehose_delivery_stream` ([#10112](https://github.com/hashicorp/terraform/issues/10112))
* provider/aws: Add support for Service Access Security Group in `aws_emr_cluster` ([#9600](https://github.com/hashicorp/terraform/issues/9600))
* provider/aws: Add Enhanced VPC routing to Redshift ([#9950](https://github.com/hashicorp/terraform/issues/9950))
* provider/aws: Add key_name_prefix argument to aws_key_pair resource ([#9993](https://github.com/hashicorp/terraform/issues/9993))
* provider/openstack: Add `value_specs` to `openstack_fw_policy_v1` resource, allowing vendor information ([#9835](https://github.com/hashicorp/terraform/issues/9835))
* provider/openstack: Add `value_specs` to `openstack_fw_firewall_v1` resource, allowing vendor information ([#9836](https://github.com/hashicorp/terraform/issues/9836))
* provider/random: The `b64` attribute on `random_id` resources is deprecated, replaced by `b64_url` and `b64_std` ([#9903](https://github.com/hashicorp/terraform/issues/9903))
* core: Splat variables (`foo.*.bar`) are now ordered by count index for deterministic ordering. ([#9883](https://github.com/hashicorp/terraform/issues/9883))
* core: Prune orphan outputs (in the config but not in the state). ([#9971](https://github.com/hashicorp/terraform/issues/9971))
* core: New apply graph doesn't prune module variables as aggressively. ([#9898](https://github.com/hashicorp/terraform/issues/9898))
* core: New apply graph properly configures providers with aliases. ([#9894](https://github.com/hashicorp/terraform/issues/9894))
* core: New destroy graph doesn't create edge loops to destroy nodes that reference themselves. ([#9968](https://github.com/hashicorp/terraform/issues/9968))
* provider/aws: Fix crash when adding EBS volumes to spot fleet request. ([#9857](https://github.com/hashicorp/terraform/issues/9857))
* provider/aws: Ignore NoSuchEntity error when IAM user does not have login profile ([#9900](https://github.com/hashicorp/terraform/issues/9900))
* provider/aws: Setting static_routes_only on import of vpn_connection ([#9802](https://github.com/hashicorp/terraform/issues/9802))
* provider/aws: aws_alb_target_group arn_suffix missing the targetgroup ([#9911](https://github.com/hashicorp/terraform/issues/9911))
* provider/aws: Fix the validateFunc of aws_elasticache_replication_group ([#9918](https://github.com/hashicorp/terraform/issues/9918))
* provider/aws: removing toLower when setting aws_db_parameter_group options ([#9820](https://github.com/hashicorp/terraform/issues/9820))
* provider/aws: Fix panic when passing statuses to aws_acm_certificate ([#9990](https://github.com/hashicorp/terraform/issues/9990))
* provider/aws: AWS IAM, User and Role allow + in the name ([#9991](https://github.com/hashicorp/terraform/issues/9991))
* state/remote/swift: Now supports all login/config options that the OpenStack Provider supports ([#9777](https://github.com/hashicorp/terraform/issues/9777))
* core: Provisioners in modules do not crash during `apply` (regression). ([#9846](https://github.com/hashicorp/terraform/issues/9846))
* core: Computed bool fields with non-bool values will not crash ([#9812](https://github.com/hashicorp/terraform/issues/9812))
* core: `formatlist` interpolation function accepts an empty list ([#9795](https://github.com/hashicorp/terraform/issues/9795))
* core: Validate outputs have a name ([#9823](https://github.com/hashicorp/terraform/issues/9823))
* core: Validate variables have a name ([#9818](https://github.com/hashicorp/terraform/issues/9818))
* command/apply: If a partial set of required variables are provided with `-var`, ask for the remainder ([#9794](https://github.com/hashicorp/terraform/issues/9794))
* provider/aws: Add support for `AutoMinorVersionUpgrade` to aws_elasticache_replication_group resource. ([#9657](https://github.com/hashicorp/terraform/issues/9657))
* provider/aws: Fix import of RouteTable with destination prefixes ([#9686](https://github.com/hashicorp/terraform/issues/9686))
* provider/aws: Add support for reference_name to aws_route53_health_check ([#9737](https://github.com/hashicorp/terraform/issues/9737))
* provider/aws: Expose ARN suffix on ALB Target Group ([#9734](https://github.com/hashicorp/terraform/issues/9734))
* provider/azurerm: add account_kind and access_tier to storage_account ([#9408](https://github.com/hashicorp/terraform/issues/9408))
* provider/azurerm: write load_balanacer attributes to network_interface_card hash ([#9207](https://github.com/hashicorp/terraform/issues/9207))
* provider/azurerm: Add disk_size_gb param to VM storage_os_disk ([#9200](https://github.com/hashicorp/terraform/issues/9200))
* provider/azurerm: support importing of subnet resource ([#9646](https://github.com/hashicorp/terraform/issues/9646))
* provider/azurerm: Add support for *all* of the Azure regions e.g. Germany, China and Government ([#9765](https://github.com/hashicorp/terraform/issues/9765))
* provider/digitalocean: Allow resizing DigitalOcean Droplets without increasing disk size. ([#9573](https://github.com/hashicorp/terraform/issues/9573))
* provider/google: enhance service scope list ([#9442](https://github.com/hashicorp/terraform/issues/9442))
* provider/google Change default MySQL instance version to 5.6 ([#9674](https://github.com/hashicorp/terraform/issues/9674))
* provider/google Support MySQL 5.7 instances ([#9673](https://github.com/hashicorp/terraform/issues/9673))
* provider/google: Add support for using source_disk to google_compute_image ([#9614](https://github.com/hashicorp/terraform/issues/9614))
* provider/google: Add support for default-internet-gateway alias for google_compute_route ([#9676](https://github.com/hashicorp/terraform/issues/9676))
* provider/openstack: Added value_specs to openstack_networking_port_v2, allowing vendor information ([#9551](https://github.com/hashicorp/terraform/issues/9551))
* provider/openstack: Added value_specs to openstack_networking_floatingip_v2, allowing vendor information ([#9552](https://github.com/hashicorp/terraform/issues/9552))
* provider/openstack: Added value_specs to openstack_compute_keypair_v2, allowing vendor information ([#9554](https://github.com/hashicorp/terraform/issues/9554))
* provider/openstack: Allow any protocol in openstack_fw_rule_v1 ([#9617](https://github.com/hashicorp/terraform/issues/9617))
* provider/openstack: expose LoadBalancer v2 VIP Port ID ([#9727](https://github.com/hashicorp/terraform/issues/9727))
* provider/openstack: Openstack Provider enhancements including environment variables ([#9725](https://github.com/hashicorp/terraform/issues/9725))
* provider/scaleway: update sdk for ams1 region ([#9687](https://github.com/hashicorp/terraform/issues/9687))
* provider/scaleway: server volume property ([#9695](https://github.com/hashicorp/terraform/issues/9695))
* core: Tainted resources will not process `ignore_changes`. ([#7855](https://github.com/hashicorp/terraform/issues/7855))
* core: Boolean looking values passed in via `-var` no longer cause type errors. ([#9642](https://github.com/hashicorp/terraform/issues/9642))
* core: Computed primitives in certain cases no longer cause diff mismatch errors. ([#9618](https://github.com/hashicorp/terraform/issues/9618))
* core: Empty arrays for list vars in JSON work ([#8886](https://github.com/hashicorp/terraform/issues/8886))
* core: Boolean types in tfvars work propertly ([#9751](https://github.com/hashicorp/terraform/issues/9751))
* core: Deposed resource destruction is accounted for properly in `apply` counts. ([#9731](https://github.com/hashicorp/terraform/issues/9731))
* core: Check for graph cycles on resource expansion to catch cycles between self-referenced resources. ([#9728](https://github.com/hashicorp/terraform/issues/9728))
* command/validate: respond to `--help` ([#9660](https://github.com/hashicorp/terraform/issues/9660))
* provider/archive: Converting to datasource. ([#8492](https://github.com/hashicorp/terraform/issues/8492))
* provider/aws: Fix issue importing AWS Instances and setting the correct `associate_public_ip_address` value ([#9453](https://github.com/hashicorp/terraform/issues/9453))
* provider/aws: Fix issue with updating ElasticBeanstalk environment variables ([#9259](https://github.com/hashicorp/terraform/issues/9259))
* provider/aws: Allow zero value for `scaling_adjustment` in `aws_autoscaling_policy` when using `SimpleScaling` ([#8893](https://github.com/hashicorp/terraform/issues/8893))
* provider/aws: Increase ECS service drain timeout ([#9521](https://github.com/hashicorp/terraform/issues/9521))
* provider/aws: Remove VPC Endpoint from state if it's not found ([#9561](https://github.com/hashicorp/terraform/issues/9561))
* provider/aws: Delete Loging Profile from IAM User on force_destroy ([#9583](https://github.com/hashicorp/terraform/issues/9583))
* provider/aws: fix aws_elasticache_replication_group for Redis in cluster mode ([#9601](https://github.com/hashicorp/terraform/issues/9601))
* provider/aws: Validate regular expression passed via the ami data_source `name_regex` attribute. ([#9622](https://github.com/hashicorp/terraform/issues/9622))
* provider/aws: Bug fix for NoSuckBucket on Destroy of aws_s3_bucket_policy ([#9641](https://github.com/hashicorp/terraform/issues/9641))
* provider/aws: Refresh aws_autoscaling_schedule from state on 404 ([#9659](https://github.com/hashicorp/terraform/issues/9659))
* provider/aws: Allow underscores in IAM user and group names ([#9684](https://github.com/hashicorp/terraform/issues/9684))
* provider/aws: aws_ami: handle deletion of AMIs ([#9721](https://github.com/hashicorp/terraform/issues/9721))
* provider/aws: Fix aws_route53_record alias perpetual diff ([#9704](https://github.com/hashicorp/terraform/issues/9704))
* provider/azurerm: Fix servicebus_topic values when using the Update func to stop perpetual diff ([#9323](https://github.com/hashicorp/terraform/issues/9323))
* provider/azurerm: lower servicebus_topic max size to Azure limit ([#9649](https://github.com/hashicorp/terraform/issues/9649))
* provider/azurerm: Fix VHD deletion when VM and Storage account are in separate resource groups ([#9631](https://github.com/hashicorp/terraform/issues/9631))
* provider/azurerm: Guard against panic when importing arm_virtual_network ([#9739](https://github.com/hashicorp/terraform/issues/9739))
* provider/consul: Change to consul_service resource to introduce a `service_id` parameter ([#9366](https://github.com/hashicorp/terraform/issues/9366))
* provider/datadog: Ignore float/int diffs on thresholds ([#9466](https://github.com/hashicorp/terraform/issues/9466))
* provider/docker: Fixes for docker_container host object and documentation ([#9367](https://github.com/hashicorp/terraform/issues/9367))
* provider/scaleway improve the performance of server deletion ([#9491](https://github.com/hashicorp/terraform/issues/9491))
* provider/scaleway: fix scaleway_volume_attachment with count > 1 ([#9493](https://github.com/hashicorp/terraform/issues/9493))
* core: When the environment variable TF_LOG_PATH is specified, debug logs are now appended to the specified file instead of being truncated. ([#9440](https://github.com/hashicorp/terraform/pull/9440))
* provider/aws: Expose ARN for `aws_lambda_alias`. ([#9390](https://github.com/hashicorp/terraform/issues/9390))
* provider/aws: Add support for AWS US East (Ohio) region. ([#9414](https://github.com/hashicorp/terraform/issues/9414))
* provider/scaleway: `scaleway_ip`, `scaleway_security_group`, `scalway_server` and `scaleway_volume` resources can now be imported. ([#9387](https://github.com/hashicorp/terraform/issues/9387))
* provider/aws: Read back `associate_public_ip_address` in `aws_launch_configuration` resources to enable importing. ([#9399](https://github.com/hashicorp/terraform/issues/9399))
* provider/aws: Remove `aws_route` resources from state if their associated `aws_route_table` has been removed. ([#9431](https://github.com/hashicorp/terraform/issues/9431))
* provider/azurerm: Load balancer resources now have their `id` attribute set to the resource URI instead of the load balancer URI. ([#9401](https://github.com/hashicorp/terraform/issues/9401))
* provider/google: Fix a bug causing a crash when migrating `google_compute_target_pool` resources from 0.6.x releases. ([#9370](https://github.com/hashicorp/terraform/issues/9370))
*`azurerm_virtual_machine` has deprecated the use of `diagnostics_profile` in favour of `boot_diagnostics`. ([#9122](https://github.com/hashicorp/terraform/issues/9122))
* The deprecated `key_file` and `bastion_key_file` arguments to Provisioner Connections have been removed ([#9340](https://github.com/hashicorp/terraform/issues/9340))
* core-validation: create validation package to provide common validation functions ([#8103](https://github.com/hashicorp/terraform/issues/8103))
* provider/aws: Support Import of OpsWorks Custom Layers ([#9252](https://github.com/hashicorp/terraform/issues/9252))
* provider/aws: Automatically constructed ARNs now support partitions other than `aws`, allowing operation with `aws-cn` and `aws-us-gov` ([#9273](https://github.com/hashicorp/terraform/issues/9273))
* provider/aws: Retry setTags operation for EC2 resources ([#7890](https://github.com/hashicorp/terraform/issues/7890))
* provider/aws: Support refresh of EC2 instance `user_data` ([#6736](https://github.com/hashicorp/terraform/issues/6736))
* provider/aws: Poll to confirm delete of `resource_aws_customer_gateway` ([#9346](https://github.com/hashicorp/terraform/issues/9346))
* provider/azurerm: expose default keys for `servicebus_namespace` ([#9242](https://github.com/hashicorp/terraform/issues/9242))
* provider/azurerm: add `enable_blob_encryption` to `azurerm_storage_account` resource ([#9233](https://github.com/hashicorp/terraform/issues/9233))
* provider/azurerm: set `resource_group_name` on resource import across the provider ([#9073](https://github.com/hashicorp/terraform/issues/9073))
* provider/azurerm: `azurerm_cdn_profile` resources can now be imported ([#9306](https://github.com/hashicorp/terraform/issues/9306))
* provider/datadog: add support for Datadog dashboard "type" and "style" options ([#9228](https://github.com/hashicorp/terraform/issues/9228))
* provider/aws: Return correct AMI image when `most_recent` is set to `true`. ([#9277](https://github.com/hashicorp/terraform/issues/9277))
* provider/aws: Fix issue with diff on import of `aws_eip` in EC2 Classic ([#9009](https://github.com/hashicorp/terraform/issues/9009))
* provider/aws: Handle EC2 tags related errors in CloudFront Distribution resource. ([#9298](https://github.com/hashicorp/terraform/issues/9298))
* provider/aws: Fix cause error when using `etag` and `kms_key_id` with `aws_s3_bucket_object` ([#9168](https://github.com/hashicorp/terraform/issues/9168))
* provider/azurerm: removing resources from state when the API returns a 404 for them ([#8859](https://github.com/hashicorp/terraform/issues/8859))
* provider/azurerm: Fixed a panic in `azurerm_virtual_machine` when using `diagnostic_profile` ([#9122](https://github.com/hashicorp/terraform/issues/9122))
*`tls_cert_request` is now a managed resource instead of a data source, restoring the pre-Terraform 0.7 behaviour ([#9035](https://github.com/hashicorp/terraform/issues/9035))
* helper/schema: Adding of MinItems as a validation to Lists and Maps ([#9216](https://github.com/hashicorp/terraform/issues/9216))
* provider/aws: Add JSON validation to the `aws_cloudwatch_event_rule` resource ([#8897](https://github.com/hashicorp/terraform/issues/8897))
* provider/aws: S3 bucket policies are imported as separate resources ([#8915](https://github.com/hashicorp/terraform/issues/8915))
* provider/aws: S3 bucket policies can now be removed via the `aws_s3_bucket` resource ([#8915](https://github.com/hashicorp/terraform/issues/8915))
* provider/aws: Added a `cluster_address` attribute to aws elasticache ([#8935](https://github.com/hashicorp/terraform/issues/8935))
* provider/aws: Add JSON validation to the `aws_elasticsearch_domain resource`. ([#8898](https://github.com/hashicorp/terraform/issues/8898))
* provider/aws: Add JSON validation to the `aws_kms_key resource`. ([#8900](https://github.com/hashicorp/terraform/issues/8900))
* provider/aws: Add JSON validation to the `aws_s3_bucket_policy resource`. ([#8901](https://github.com/hashicorp/terraform/issues/8901))
* provider/aws: Add JSON validation to the `aws_sns_topic resource`. ([#8902](https://github.com/hashicorp/terraform/issues/8902))
* provider/aws: Add JSON validation to the `aws_sns_topic_policy resource`. ([#8903](https://github.com/hashicorp/terraform/issues/8903))
* provider/aws: Add JSON validation to the `aws_sqs_queue resource`. ([#8904](https://github.com/hashicorp/terraform/issues/8904))
* provider/aws: Add JSON validation to the `aws_sqs_queue_policy resource`. ([#8905](https://github.com/hashicorp/terraform/issues/8905))
* provider/aws: Add JSON validation to the `aws_vpc_endpoint resource`. ([#8906](https://github.com/hashicorp/terraform/issues/8906))
* provider/aws: Update `aws_cloudformation_stack` data source with new helper function. ([#8907](https://github.com/hashicorp/terraform/issues/8907))
* provider/aws: Add JSON validation to the `aws_s3_bucket` resource. ([#8908](https://github.com/hashicorp/terraform/issues/8908))
* provider/aws: Add support for `cloudwatch_logging_options` to Firehose Delivery Streams ([#8671](https://github.com/hashicorp/terraform/issues/8671))
* provider/aws: Add HTTP/2 support via the http_version parameter to CloudFront distribution ([#8777](https://github.com/hashicorp/terraform/issues/8777))
* provider/aws: Add `query_string_cache_keys` to allow for selective caching of CloudFront keys ([#8777](https://github.com/hashicorp/terraform/issues/8777))
* provider/aws: Support Import `aws_elasticache_cluster` ([#9010](https://github.com/hashicorp/terraform/issues/9010))
* provider/aws: Add support for tags to `aws_cloudfront_distribution` ([#9011](https://github.com/hashicorp/terraform/issues/9011))
* provider/aws: Support Import `aws_opsworks_stack` ([#9124](https://github.com/hashicorp/terraform/issues/9124))
* provider/aws: Support Import `aws_elasticache_replication_groups` ([#9140](https://github.com/hashicorp/terraform/issues/9140))
* provider/aws: Add new aws api-gateway integration types ([#9213](https://github.com/hashicorp/terraform/issues/9213))
* core: Fixed variables not being in scope for destroy -target on modules ([#9021](https://github.com/hashicorp/terraform/issues/9021))
* core: Fixed issue that prevented diffs from being properly generated in a specific resource schema scenario ([#8891](https://github.com/hashicorp/terraform/issues/8891))
* provider/aws: Remove support for `ah` and `esp` literals in Security Group Ingress/Egress rules; you must use the actual protocol number for protocols other than `tcp`, `udp`, `icmp`, or `all` ([#8975](https://github.com/hashicorp/terraform/issues/8975))
* provider/aws: Do not report drift for effect values differing only by case in AWS policies ([#9139](https://github.com/hashicorp/terraform/issues/9139))
* provider/aws: VPC ID, Port, Protocol and Name change on aws_alb_target_group will ForceNew resource ([#8989](https://github.com/hashicorp/terraform/issues/8989))
* provider/aws: Wait for Spot Fleet to drain before removing from state ([#8938](https://github.com/hashicorp/terraform/issues/8938))
* provider/aws: Fix issue when importing `aws_eip` resources by IP address ([#8970](https://github.com/hashicorp/terraform/issues/8970))
* provider/aws: Ensure that origin_access_identity is a required value within the CloudFront distribution s3_config block ([#8777](https://github.com/hashicorp/terraform/issues/8777))
* provider/aws: Corrected Seoul S3 Website Endpoint format ([#9032](https://github.com/hashicorp/terraform/issues/9032))
* provider/aws: Fix crashing bug in `aws_ami` data source when using `name_regex` ([#9033](https://github.com/hashicorp/terraform/issues/9033))
* provider/aws: Fix reading dimensions on cloudwatch alarms ([#9029](https://github.com/hashicorp/terraform/issues/9029))
* provider/aws: Changing snapshot_identifier on aws_db_instance resource should force… ([#8806](https://github.com/hashicorp/terraform/issues/8806))
* provider/aws: Refresh AWS EIP association from state when not found ([#9056](https://github.com/hashicorp/terraform/issues/9056))
* provider/aws: Make encryption in Aurora instances computed-only ([#9060](https://github.com/hashicorp/terraform/issues/9060))
* provider/aws: Make sure that VPC Peering Connection in a failed state returns an error. ([#9038](https://github.com/hashicorp/terraform/issues/9038))
* provider/aws: guard against aws_route53_record delete panic ([#9049](https://github.com/hashicorp/terraform/issues/9049))
* provider/aws: aws_db_option_group flattenOptions failing due to missing values ([#9052](https://github.com/hashicorp/terraform/issues/9052))
* provider/aws: Add retry logic to the aws_ecr_repository delete func ([#9050](https://github.com/hashicorp/terraform/issues/9050))
* provider/aws: Modifying the parameter_group_name of aws_elasticache_replication_group caused a panic ([#9101](https://github.com/hashicorp/terraform/issues/9101))
* provider/aws: Fix issue with updating ELB subnets for subnets in the same AZ ([#9131](https://github.com/hashicorp/terraform/issues/9131))
* provider/aws: aws_route53_record alias refresh manually updated record ([#9125](https://github.com/hashicorp/terraform/issues/9125))
* provider/aws: Fix issue detaching volumes that were already detached ([#9023](https://github.com/hashicorp/terraform/issues/9023))
* provider/aws: Add retry to the `aws_ssm_document` delete func ([#9188](https://github.com/hashicorp/terraform/issues/9188))
* provider/aws: Fix issue updating `search_string` in aws_cloudwatch_metric_alarm ([#9230](https://github.com/hashicorp/terraform/issues/9230))
* provider/aws: Update EFS resource to read performance mode and creation_token ([#9234](https://github.com/hashicorp/terraform/issues/9234))
* provider/azurerm: fix resource ID parsing for subscriptions resources ([#9163](https://github.com/hashicorp/terraform/issues/9163))
* provider/librato: Mandatory name and conditions attributes weren't being sent on Update unless changed ([#8984](https://github.com/hashicorp/terraform/issues/8984))
* provisioner/chef: Fix an error with parsing certain `vault_json` content ([#9114](https://github.com/hashicorp/terraform/issues/9114))
* provisioner/chef: Change to order in which to cleanup the user key so this is done before the Chef run starts ([#9114](https://github.com/hashicorp/terraform/issues/9114))
* provider/aws: Export AWS ELB service account ARN ([#8700](https://github.com/hashicorp/terraform/issues/8700))
* provider/aws: Allow `aws_alb` to have the name auto-generated ([#8673](https://github.com/hashicorp/terraform/issues/8673))
* provider/aws: Expose `arn_suffix` on `aws_alb` ([#8833](https://github.com/hashicorp/terraform/issues/8833))
* provider/aws: Add JSON validation to the `aws_cloudformation_stack` resource ([#8896](https://github.com/hashicorp/terraform/issues/8896))
* provider/aws: Add JSON validation to the `aws_glacier_vault` resource ([#8899](https://github.com/hashicorp/terraform/issues/8899))
* provider/azurerm: support Diagnostics Profile ([#8277](https://github.com/hashicorp/terraform/issues/8277))
* provider/google: Resources depending on the `network` attribute can now reference the network by `self_link` or `name` ([#8639](https://github.com/hashicorp/terraform/issues/8639))
* provider/postgresql: The standard environment variables PGHOST, PGUSER, PGPASSWORD and PGSSLMODE are now supported for provider configuration ([#8666](https://github.com/hashicorp/terraform/issues/8666))
* helper/resource: Add timeout duration to timeout error message ([#8773](https://github.com/hashicorp/terraform/issues/8773))
* provisioner/chef: Support recreating Chef clients by setting `recreate_client=true` ([#8577](https://github.com/hashicorp/terraform/issues/8577))
* provisioner/chef: Support encrypting existing Chef-Vaults for newly created clients ([#8577](https://github.com/hashicorp/terraform/issues/8577))
* provider/aws: `aws_nat_gateways` will now recreate on `failed` state ([#8689](https://github.com/hashicorp/terraform/issues/8689))
* provider/aws: Prevent crash on account ID validation ([#8731](https://github.com/hashicorp/terraform/issues/8731))
* provider/aws: `aws_db_instance` unexpected state when configurating enhanced monitoring ([#8707](https://github.com/hashicorp/terraform/issues/8707))
* provider/aws: Remove region condition from `aws_codecommit_repository` ([#8778](https://github.com/hashicorp/terraform/issues/8778))
* provider/aws: Support Policy DiffSuppression in `aws_kms_key` policy ([#8675](https://github.com/hashicorp/terraform/issues/8675))
* Terraform now validates the uniqueness of variable and output names in your configurations. In prior versions certain ways of duplicating variable names would work. This is now a configuration error (and should've always been). If you get an error running Terraform you may need to remove the duplicates. Done right, this should not affect the behavior of Terraform.
* **New Remote State Backend:** `local` ([#8647](https://github.com/hashicorp/terraform/issues/8647))
* Data source blocks can now have a count associated with them ([#8635](https://github.com/hashicorp/terraform/issues/8635))
* The count of a resource can now be referenced for interpolations: `self.count` and `type.name.count` work ([#8581](https://github.com/hashicorp/terraform/issues/8581))
* Provisioners now support connection using IPv6 in addition to IPv4 ([#6616](https://github.com/hashicorp/terraform/issues/6616))
* provider/aws: Add ability Enable/Disable For ELB Access logs ([#8438](https://github.com/hashicorp/terraform/issues/8438))
* provider/aws: Add support for assuming a role prior to performing API operations ([#8638](https://github.com/hashicorp/terraform/issues/8638))
* provider/aws: Export `arn` of `aws_autoscaling_group` ([#8503](https://github.com/hashicorp/terraform/issues/8503))
* provider/aws: More robust handling of Lambda function archives hosted on S3 ([#6860](https://github.com/hashicorp/terraform/issues/6860))
* provider/aws: Spurious diffs of `aws_s3_bucket` policy attributes due to JSON field ordering are reduced ([#8615](https://github.com/hashicorp/terraform/issues/8615))
* provider/aws: `name_regex` attribute for local post-filtering of `aws_ami` data source results ([#8403](https://github.com/hashicorp/terraform/issues/8403))
* provider/aws: Support for lifecycle hooks at ASG creation ([#5620](https://github.com/hashicorp/terraform/issues/5620))
* provider/consul: Make provider settings truly optional ([#8551](https://github.com/hashicorp/terraform/issues/8551))
* provider/statuscake: Add support for contact-group id in statuscake test ([#8417](https://github.com/hashicorp/terraform/issues/8417))
* core: Changing a module source from file to VCS no longer errors ([#8398](https://github.com/hashicorp/terraform/issues/8398))
* core: Configuration is now validated prior to input, fixing an obscure parse error when attempting to interpolate a count ([#8591](https://github.com/hashicorp/terraform/issues/8591))
* core: JSON configuration with resources with a single key parse properly ([#8485](https://github.com/hashicorp/terraform/issues/8485))
* core: States with duplicate modules are detected and an error is shown ([#8463](https://github.com/hashicorp/terraform/issues/8463))
* core: Validate uniqueness of variables/outputs in a module ([#8482](https://github.com/hashicorp/terraform/issues/8482))
* core: `-var` flag inputs starting with a number work and was fixed in such a way that this should overall be a lot more resilient to inputs ([#8044](https://github.com/hashicorp/terraform/issues/8044))
* provider/aws: Do not set empty string to state for `aws_vpn_gateway` availability zone ([#8645](https://github.com/hashicorp/terraform/issues/8645))
* provider/aws: Fix. Adjust create and destroy timeout in aws_vpn_gateway_attachment. ([#8636](https://github.com/hashicorp/terraform/issues/8636))
* provider/aws: Handle missing EFS mount target in `aws_efs_mount_target` ([#8529](https://github.com/hashicorp/terraform/issues/8529))
* provider/aws: If an `aws_security_group` was used in Lambda function it may have prevented you from destroying such SG due to dangling ENIs created by Lambda service. These ENIs are now automatically cleaned up prior to SG deletion ([#8033](https://github.com/hashicorp/terraform/issues/8033))
* provider/aws: Increase `aws_route_table` timeouts from 1 min to 2 mins ([#8465](https://github.com/hashicorp/terraform/issues/8465))
* provider/aws: Increase aws_rds_cluster timeout to 40 minutes ([#8623](https://github.com/hashicorp/terraform/issues/8623))
* provider/aws: Refresh `aws_route` from state if `aws_route_table` not found ([#8443](https://github.com/hashicorp/terraform/issues/8443))
* provider/aws: Remove `aws_elasticsearch_domain` from state if it doesn't exist ([#8643](https://github.com/hashicorp/terraform/issues/8643))
* provider/aws: Remove unsafe ptr dereferencing from ECS/ECR ([#8514](https://github.com/hashicorp/terraform/issues/8514))
* provider/aws: Set `apply_method` to state in `aws_db_parameter_group` ([#8603](https://github.com/hashicorp/terraform/issues/8603))
* provider/aws: Stop `aws_instance``source_dest_check` triggering an API call on each terraform run ([#8450](https://github.com/hashicorp/terraform/issues/8450))
* provider/aws: Wait for `aws_route_53_record` to be in-sync after a delete ([#8646](https://github.com/hashicorp/terraform/issues/8646))
* provider/aws: `aws_volume_attachment` detachment errors are caught ([#8479](https://github.com/hashicorp/terraform/issues/8479))
* provider/aws: adds resource retry to `aws_spot_instance_request` ([#8516](https://github.com/hashicorp/terraform/issues/8516))
* provider/aws: Add validation of Health Check target to aws_elb. ([#8578](https://github.com/hashicorp/terraform/issues/8578))
* provider/aws: Skip detaching when aws_internet_gateway not found ([#8454](https://github.com/hashicorp/terraform/issues/8454))
* provider/aws: Handle all kinds of CloudFormation stack failures ([#5606](https://github.com/hashicorp/terraform/issues/5606))
* provider/azurerm: Reordering the checks after an Azure API Get ([#8607](https://github.com/hashicorp/terraform/issues/8607))
* provider/chef: Fix "invalid header" errors that could occur ([#8382](https://github.com/hashicorp/terraform/issues/8382))
* provider/openstack: changes were made to how volumes attached to instances are detected. If you attached a volume to an instance out of band to Terraform, it will be detached upon the next apply. You can resolve this by adding a `volume` entry for the attached volume.
* provider/aws: Fix possible crash if using duplicate Route53 records ([#8399](https://github.com/hashicorp/terraform/issues/8399))
* provider/aws: Refresh `aws_autoscaling_policy` from state on 404 ([#8430](https://github.com/hashicorp/terraform/issues/8430))
* provider/aws: Fix crash with VPC Peering connection accept/requests ([#8432](https://github.com/hashicorp/terraform/issues/8432))
* provider/aws: AWS SpotFleet Requests now works with Subnets and AZs ([#8320](https://github.com/hashicorp/terraform/issues/8320))
* provider/aws: Refresh `aws_cloudwatch_event_target` from state on `ResourceNotFoundException` ([#8442](https://github.com/hashicorp/terraform/issues/8442))
* provider/aws: Validate `aws_iam_policy_attachment` Name parameter to stop being empty ([#8441](https://github.com/hashicorp/terraform/issues/8441))
* provider/aws: Fix segmentation fault in `aws_api_gateway_base_path_mapping` resource ([#8466](https://github.com/hashicorp/terraform/issues/8466))
* provider/google: fix crash regression from Terraform 0.7.1 on `google_compute_firewall` resource ([#8390](https://github.com/hashicorp/terraform/issues/8390))
* provider/openstack: Volume Attachment and Detachment Fixes ([#8172](https://github.com/hashicorp/terraform/issues/8172))
* provider/archive support folders in output_path ([#8278](https://github.com/hashicorp/terraform/issues/8278))
* provider/aws: Introduce `aws_elasticsearch_domain``elasticsearch_version` field (to specify ES version) ([#7860](https://github.com/hashicorp/terraform/issues/7860))
* provider/aws: CloudWatch Metrics are now supported for `aws_route53_health_check` resources ([#8319](https://github.com/hashicorp/terraform/issues/8319))
* provider/aws: Query all pages of group membership ([#6726](https://github.com/hashicorp/terraform/issues/6726))
* provider/aws: Query all pages of IAM Policy attachments ([#7779](https://github.com/hashicorp/terraform/issues/7779))
* provider/aws: Change the way ARNs are built ([#7151](https://github.com/hashicorp/terraform/issues/7151))
* provider/aws: Add support for Elasticsearch destination to firehose delivery streams ([#7839](https://github.com/hashicorp/terraform/issues/7839))
* provider/aws: Retry AttachInternetGateway and increase timeout on `aws_internet_gateway` ([#7891](https://github.com/hashicorp/terraform/issues/7891))
* provider/aws: Add support for Enhanced monitoring to `aws_rds_cluster_instance` ([#8038](https://github.com/hashicorp/terraform/issues/8038))
* provider/aws: Add ability to set Requests Payer in `aws_s3_bucket` ([#8065](https://github.com/hashicorp/terraform/issues/8065))
* provider/aws: Add ability to set canned ACL in `aws_s3_bucket_object` ([#8091](https://github.com/hashicorp/terraform/issues/8091))
* provider/aws: Allow skipping credentials validation, requesting Account ID and/or metadata API check ([#7874](https://github.com/hashicorp/terraform/issues/7874))
* provider/aws: API gateway request/response parameters can now be specified as map, original `*_in_json` parameters deprecated ([#7794](https://github.com/hashicorp/terraform/issues/7794))
* provider/aws: Add support for `promotion_tier` to `aws_rds_cluster_instance` ([#8087](https://github.com/hashicorp/terraform/issues/8087))
* provider/aws: Allow specifying custom S3 endpoint and enforcing S3 path style URLs via new provider options ([#7871](https://github.com/hashicorp/terraform/issues/7871))
* provider/aws: Add ability to set Storage Class in `aws_s3_bucket_object` ([#8174](https://github.com/hashicorp/terraform/issues/8174))
* provider/aws: Treat `aws_lambda_function` w/ empty `subnet_ids`&`security_groups_ids` in `vpc_config` as VPC-disabled function ([#6191](https://github.com/hashicorp/terraform/issues/6191))
* provider/aws: Allow `source_ids` in `aws_db_event_subscription` to be Updatable ([#7892](https://github.com/hashicorp/terraform/issues/7892))
* provider/aws: Make `aws_efs_mount_target` creation fail for 2+ targets per AZ ([#8205](https://github.com/hashicorp/terraform/issues/8205))
* provider/aws: Add `force_destroy` option to `aws_route53_zone` ([#8239](https://github.com/hashicorp/terraform/issues/8239))
* provider/aws: Support import of `aws_s3_bucket` ([#8262](https://github.com/hashicorp/terraform/issues/8262))
* provider/aws: Increase timeout for retrying creation of IAM role ([#7733](https://github.com/hashicorp/terraform/issues/7733))
* provider/aws: Add ability to set peering options in aws_vpc_peering_connection. ([#8310](https://github.com/hashicorp/terraform/issues/8310))
* provider/azure: add custom_data argument for azure_instance resource ([#8158](https://github.com/hashicorp/terraform/issues/8158))
* provider/azurerm: Adds support for uploading blobs to azure storage from local source ([#7994](https://github.com/hashicorp/terraform/issues/7994))
* provider/azurerm: Storage blob contents can be copied from an existing blob ([#8126](https://github.com/hashicorp/terraform/issues/8126))
* provider/datadog: Allow `tags` to be configured for monitor resources. ([#8284](https://github.com/hashicorp/terraform/issues/8284))
* provider/google: allows atomic Cloud DNS record changes ([#6575](https://github.com/hashicorp/terraform/issues/6575))
* provider/google: Move URLMap hosts to TypeSet from TypeList ([#7472](https://github.com/hashicorp/terraform/issues/7472))
* provider/google: Support static private IP addresses in `resource_compute_instance` ([#6310](https://github.com/hashicorp/terraform/issues/6310))
* provider/google: Add support for using a GCP Image Family ([#8083](https://github.com/hashicorp/terraform/issues/8083))
* provider/openstack: Support updating the External Gateway assigned to a Neutron router ([#8070](https://github.com/hashicorp/terraform/issues/8070))
* provider/openstack: Support for `value_specs` param on `openstack_networking_network_v2` ([#8155](https://github.com/hashicorp/terraform/issues/8155))
* provider/openstack: Add `value_specs` param on `openstack_networking_subnet_v2` ([#8181](https://github.com/hashicorp/terraform/issues/8181))
* provider/vsphere: Improved SCSI controller handling in `vsphere_virtual_machine` ([#7908](https://github.com/hashicorp/terraform/issues/7908))
* provider/vsphere: Adding disk type of `Thick Lazy` to `vsphere_virtual_disk` and `vsphere_virtual_machine` ([#7916](https://github.com/hashicorp/terraform/issues/7916))
* provider/vsphere: Standardizing datastore references to use builtin Path func ([#8075](https://github.com/hashicorp/terraform/issues/8075))
* provider/consul: add tls config support to consul provider ([#7015](https://github.com/hashicorp/terraform/issues/7015))
* remote/consul: Support setting datacenter when using consul remote state ([#8102](https://github.com/hashicorp/terraform/issues/8102))
* provider/google: Support import of `google_compute_instance_template` ([#8147](https://github.com/hashicorp/terraform/issues/8147)), `google_compute_firewall` ([#8236](https://github.com/hashicorp/terraform/issues/8236)), `google_compute_target_pool` ([#8133](https://github.com/hashicorp/terraform/issues/8133)), `google_compute_fowarding_rule` ([#8122](https://github.com/hashicorp/terraform/issues/8122)), `google_compute_http_health_check` ([#8121](https://github.com/hashicorp/terraform/issues/8121)), `google_compute_autoscaler` ([#8115](https://github.com/hashicorp/terraform/issues/8115))
* core: Fix issue preventing `taint` from working with resources that had no other attributes in their diff ([#8167](https://github.com/hashicorp/terraform/issues/8167))
* core: CLI will only run exact match commands ([#7983](https://github.com/hashicorp/terraform/issues/7983))
* core: Fix panic when resources ends up null in state file ([#8120](https://github.com/hashicorp/terraform/issues/8120))
* core: Fix panic when validating a count with a unprefixed variable ([#8243](https://github.com/hashicorp/terraform/issues/8243))
* core: Divide by zero in interpolations no longer panics ([#7701](https://github.com/hashicorp/terraform/issues/7701))
* core: Fix panic on some invalid interpolation syntax ([#5672](https://github.com/hashicorp/terraform/issues/5672))
* provider/aws: guard against missing image_digest in `aws_ecs_task_definition` ([#7966](https://github.com/hashicorp/terraform/issues/7966))
* provider/aws: `aws_cloudformation_stack` now respects `timeout_in_minutes` field when waiting for CF API to finish an update operation ([#7997](https://github.com/hashicorp/terraform/issues/7997))
* provider/aws: Prevent errors when `aws_s3_bucket``acceleration_status` is not available in a given region ([#7999](https://github.com/hashicorp/terraform/issues/7999))
* provider/aws: Add state filter to `aws_availability_zone`s data source ([#7965](https://github.com/hashicorp/terraform/issues/7965))
* provider/aws: Handle lack of snapshot ID for a volume in `ami_copy` ([#7995](https://github.com/hashicorp/terraform/issues/7995))
* provider/aws: Retry association of IAM Role & instance profile ([#7938](https://github.com/hashicorp/terraform/issues/7938))
* provider/aws: Fix line ending errors/diffs with IAM Server Certs ([#8074](https://github.com/hashicorp/terraform/issues/8074))
* provider/aws: Fixing IAM data source policy generation to prevent spurious diffs ([#6956](https://github.com/hashicorp/terraform/issues/6956))
* provider/aws: Correct how CORS rules are handled in `aws_s3_bucket` ([#8096](https://github.com/hashicorp/terraform/issues/8096))
* provider/aws: allow numeric characters in RedshiftClusterDbName ([#8178](https://github.com/hashicorp/terraform/issues/8178))
* provider/aws: `aws_security_group` now creates tags as early as possible in the process ([#7849](https://github.com/hashicorp/terraform/issues/7849))
* provider/aws: Defensively code around `db_security_group` ingress rules ([#7893](https://github.com/hashicorp/terraform/issues/7893))
* provider/aws: `aws_spot_fleet_request` throws panic on missing subnet_id or availability_zone ([#8217](https://github.com/hashicorp/terraform/issues/8217))
* provider/aws: Terraform fails during Redshift delete if FinalSnapshot is being taken. ([#8270](https://github.com/hashicorp/terraform/issues/8270))
* provider/azurerm: `azurerm_storage_account` will interrupt for Ctrl-C ([#8215](https://github.com/hashicorp/terraform/issues/8215))
* provider/digitalocean: trim whitespace from ssh key ([#8173](https://github.com/hashicorp/terraform/issues/8173))
* provider/digitalocean: Enforce Lowercase on IPV6 Addresses ([#7652](https://github.com/hashicorp/terraform/issues/7652))
* provider/google: Use resource specific project when making queries/changes ([#7029](https://github.com/hashicorp/terraform/issues/7029))
* provider/google: Fix read for the backend service resource ([#7476](https://github.com/hashicorp/terraform/issues/7476))
* provider/mysql: `mysql_user` works with MySQL versions before 5.7.6 ([#8251](https://github.com/hashicorp/terraform/issues/8251))
* provider/openstack: Fix typo in OpenStack LBaaSv2 pool resource ([#8179](https://github.com/hashicorp/terraform/issues/8179))
* provider/vSphere: Fix for IPv6 only environment creation ([#7643](https://github.com/hashicorp/terraform/issues/7643))
* provider/google: Correct update process for authorized networks in `google_sql_database_instance` ([#8290](https://github.com/hashicorp/terraform/issues/8290))
* Terraform's built-in plugins are now distributed as part of the main Terraform binary, and use the go-plugin framework. Overrides are still available using separate binaries, but will need recompiling against Terraform 0.7.
* The `terraform plan` command no longer persists state. This makes the command much safer to run, since it is now side-effect free. The `refresh` and `apply` commands still persist state to local and remote storage. Any automation that assumes that `terraform plan` persists state will need to be reworked to explicitly call `terraform refresh` to get the equivalent side-effect. (The `terraform plan` command no longer has the `-state-out` or `-backup` flags due to this change.)
* The `concat()` interpolation function can no longer be used to join strings.
* Lists materialized using splat syntax, for example `aws_instance.foo.*.id` are now ordered by the count index rather than lexographically sorted. If this produces a large number of undesirable differences, you can use the new `sort()` interpolation function to produce the previous behaviour.
* You now access the values of maps using the syntax `var.map["key"]` or the `lookup` function instead of `var.map.key`.
* Outputs on `terraform_remote_state` resources are now top level attributes rather than inside the `output` map. In order to access outputs, use the syntax: `terraform_remote_state.name.outputname`. Currently outputs cannot be named `config` or `backend`.
* AWS Provider
*`aws_elb` now defaults `cross_zone_load_balancing` to `true`
*`aws_instance`: EC2 Classic users may continue to use `security_groups` to reference Security Groups by their `name`. Users who are managing Instances inside VPCs will need to use `vpc_security_group_ids` instead, and reference the security groups by their `id`. Ref https://github.com/hashicorp/terraform/issues/6416#issuecomment-219145065
*`aws_kinesis_firehose_delivery_stream`: AWS Kinesis Firehose has been refactored to support Redshift as a destination in addition to S3. As a result, the configuration has changed and users will need to update their configuration to match the new `s3_configuration` block. Checkout the documentaiton on [AWS Kinesis Firehose](http://localhost:4567/docs/providers/aws/r/kinesis_firehose_delivery_stream.html) for more information ([#7375](https://github.com/hashicorp/terraform/issues/7375))
*`aws_route53_record`: `latency_routing_policy`, `geolocation_routing_policy`, and `failover_routing_policy` block options have been added. With these additions we’ve renamed the `weight` attribute to `weighted_routing_policy`, and it has changed from a string to a block to match the others. Please see the updated documentation on using `weighted_routing_policy`: https://www.terraform.io/docs/providers/aws/r/route53_record.html . ([#6954](https://github.com/hashicorp/terraform/issues/6954))
*`aws_db_instance` now defaults `publicly_accessible` to false
* Microsoft Azure Provider
* In documentation, the "Azure (Resource Manager)" provider has been renamed to the "Microsoft Azure" provider.
*`azurerm_dns_cname_record` now accepts a single record rather than a list of records
*`azurerm_virtual_machine` computer_name now Required
* Openstack Provider
*`openstack_networking_subnet_v2` now defaults to turning DHCP on.
*`openstack_fw_policy_v1` now correctly applies rules in the order they are specified. Upon the next apply, current rules might be re-ordered.
* The `member` attribute of `openstack_lb_pool_v1` has been deprecated. Please ue the new `openstack_lb_member_v1` resource.
* Docker Provider
*`keep_updated` parameter removed from `docker_image` - This parameter never did what it was supposed to do. See relevant docs, specifically `pull_trigger`& new `docker_registry_image` data source to understand how to keep your `docker_image` updated.
* Atlas Provider
*`atlas_artifact` resource has be deprecated. Please use the new `atlas_artifact` Data Source.
* CloudStack Provider
* All deprecated parameters are removed from all `CloudStack` resources
* **Data sources** are a new kind of primitive in Terraform. Attributes for data sources are refreshed and available during the planning stage. ([#6598](https://github.com/hashicorp/terraform/issues/6598))
* **Lists and maps** can now be used as first class types for variables and may also be passed between modules. ([#6322](https://github.com/hashicorp/terraform/issues/6322))
* **State management CLI commands** provide a variety of state manipulation functions for advanced use cases. This should be used where possible instead of manually modifying state files. ([#5811](https://github.com/hashicorp/terraform/issues/5811))
* **State Import** allows a way to import existing resources into Terraform state for many types of resource. Initial coverage of AWS is quite high, and it is straightforward to add support for new resources.
* **New Command:** `terraform state` to provide access to a variety of state manipulation functions ([#5811](https://github.com/hashicorp/terraform/issues/5811))
* **New Option:** `terraform output` now supports the `-json` flag to print a machine-readable representation of outputs ([#7608](https://github.com/hashicorp/terraform/issues/7608))
* **New Data Source:** `aws_ami` ([#6911](https://github.com/hashicorp/terraform/issues/6911))
* **New Data Source:** `aws_availability_zones` ([#6805](https://github.com/hashicorp/terraform/issues/6805))
* **New Data Source:** `aws_iam_policy_document` ([#6881](https://github.com/hashicorp/terraform/issues/6881))
* **New Data Source:** `aws_s3_bucket_object` ([#6946](https://github.com/hashicorp/terraform/issues/6946))
* **New Data Source:** `aws_ecs_container_definition` ([#7230](https://github.com/hashicorp/terraform/issues/7230))
* **New Data Source:** `atlas_artifact` ([#7419](https://github.com/hashicorp/terraform/issues/7419))
* **New Data Source:** `docker_registry_image` ([#7000](https://github.com/hashicorp/terraform/issues/7000))
* **New Data Source:** `consul_keys` ([#7678](https://github.com/hashicorp/terraform/issues/7678))
* **New Provider:** `random` - allows generation of random values without constantly generating diffs ([#6672](https://github.com/hashicorp/terraform/issues/6672))
* **New Remote State Provider:** - `gcs` - Google Cloud Storage ([#6814](https://github.com/hashicorp/terraform/issues/6814))
* **New Remote State Provider:** - `azure` - Microsoft Azure Storage ([#7064](https://github.com/hashicorp/terraform/issues/7064))
* core: Tainted resources now show up in the plan and respect dependency ordering ([#6600](https://github.com/hashicorp/terraform/issues/6600))
* core: The `lookup` interpolation function can now have a default fall-back value specified ([#6884](https://github.com/hashicorp/terraform/issues/6884))
* core: The `terraform plan` command no longer persists state. ([#6811](https://github.com/hashicorp/terraform/issues/6811))
* core: The `jsonencode` interpolation function now supports encoding lists and maps ([#6749](https://github.com/hashicorp/terraform/issues/6749))
* core: Add the ability for resource definitions to mark attributes as "sensitive" which will omit them from UI output. ([#6923](https://github.com/hashicorp/terraform/issues/6923))
* core: Support `.` in map keys ([#7654](https://github.com/hashicorp/terraform/issues/7654))
* core: Enhance interpolation functions to account for first class maps and lists ([#7832](https://github.com/hashicorp/terraform/issues/7832)) ([#7834](https://github.com/hashicorp/terraform/issues/7834))
* command: Remove second DefaultDataDirectory const ([#7666](https://github.com/hashicorp/terraform/issues/7666))
* provider/aws: Add `dns_name` to `aws_efs_mount_target` ([#7428](https://github.com/hashicorp/terraform/issues/7428))
* provider/aws: Add `force_destroy` to `aws_iam_user` for force-deleting access keys assigned to the user ([#7766](https://github.com/hashicorp/terraform/issues/7766))
* provider/aws: Add `option_settings` to `aws_db_option_group` ([#6560](https://github.com/hashicorp/terraform/issues/6560))
* provider/aws: Add more explicit support for Skipping Final Snapshot in RDS Cluster ([#6795](https://github.com/hashicorp/terraform/issues/6795))
* provider/aws: Add support for S3 Bucket Acceleration ([#6628](https://github.com/hashicorp/terraform/issues/6628))
* provider/aws: Add support for `kms_key_id` to `aws_db_instance` ([#6651](https://github.com/hashicorp/terraform/issues/6651))
* provider/aws: Specifying more than one health check on an `aws_elb` fails with an error prior to making an API request ([#7489](https://github.com/hashicorp/terraform/issues/7489))
* provider/aws: Add support to `aws_redshift_cluster` for `iam_roles` ([#6647](https://github.com/hashicorp/terraform/issues/6647))
* provider/aws: SQS use raw policy string if compact fails ([#6724](https://github.com/hashicorp/terraform/issues/6724))
* provider/aws: Set default description to "Managed by Terraform" ([#6104](https://github.com/hashicorp/terraform/issues/6104))
* provider/aws: Support for Redshift Cluster encryption using a KMS key ([#6712](https://github.com/hashicorp/terraform/issues/6712))
* provider/aws: Support tags for AWS redshift cluster ([#5356](https://github.com/hashicorp/terraform/issues/5356))
* provider/aws: Add `iam_arn` to aws_cloudfront_origin_access_identity ([#6955](https://github.com/hashicorp/terraform/issues/6955))
* provider/aws: Add `cross_zone_load_balancing` on `aws_elb` default to true ([#6897](https://github.com/hashicorp/terraform/issues/6897))
* provider/aws: Add support for `character_set_name` to `aws_db_instance` ([#4861](https://github.com/hashicorp/terraform/issues/4861))
* provider/aws: Add support for DB parameter group with RDS Cluster Instances (Aurora) ([#6865](https://github.com/hashicorp/terraform/issues/6865))
* provider/aws: Add `name_prefix` to `aws_iam_instance_profile` and `aws_iam_role` ([#6939](https://github.com/hashicorp/terraform/issues/6939))
* provider/aws: Allow authentication & credentials validation for federated IAM Roles and EC2 instance profiles ([#6536](https://github.com/hashicorp/terraform/issues/6536))
* provider/aws: Rename parameter_group_name to db_cluster_parameter_group_name ([#7083](https://github.com/hashicorp/terraform/issues/7083))
* provider/aws: `delegation_set_id` conflicts w/ `vpc_id` in `aws_route53_zone` as delegation sets can only be used for public zones ([#7213](https://github.com/hashicorp/terraform/issues/7213))
* provider/aws: Support Elastic Beanstalk scheduledaction ([#7376](https://github.com/hashicorp/terraform/issues/7376))
* provider/aws: Add support for NewInstancesProtectedFromScaleIn to `aws_autoscaling_group` ([#6490](https://github.com/hashicorp/terraform/issues/6490))
* provider/aws: Added support for `snapshot_identifier` parameter in aws_rds_cluster ([#7158](https://github.com/hashicorp/terraform/issues/7158))
* provider/aws: Add inplace edit/update DB Security Group Rule Ingress ([#7245](https://github.com/hashicorp/terraform/issues/7245))
* provider/aws: Added support for redshift destination to firehose delivery streams ([#7375](https://github.com/hashicorp/terraform/issues/7375))
* provider/aws: Allow `aws_redshift_security_group` ingress rules to change ([#5939](https://github.com/hashicorp/terraform/issues/5939))
* provider/aws: Add support for `encryption` and `kms_key_id` to `aws_ami` ([#7181](https://github.com/hashicorp/terraform/issues/7181))
* provider/aws: AWS prefix lists to enable security group egress to a VPC Endpoint ([#7511](https://github.com/hashicorp/terraform/issues/7511))
* provider/aws: Retry creation of IAM role depending on new IAM user ([#7324](https://github.com/hashicorp/terraform/issues/7324))
* provider/aws: Allow `port` on `aws_db_instance` to be updated ([#7441](https://github.com/hashicorp/terraform/issues/7441))
* provider/aws: Support `task_role_arn` on `aws_ecs_task_definition ([#7653](https://github.com/hashicorp/terraform/issues/7653))
* provider/aws: Support Tags on `aws_rds_cluster` ([#7695](https://github.com/hashicorp/terraform/issues/7695))
* provider/aws: Support kms_key_id for `aws_rds_cluster` ([#7662](https://github.com/hashicorp/terraform/issues/7662))
* provider/aws: Allow setting a `poll_interval` on `aws_elastic_beanstalk_environment` ([#7523](https://github.com/hashicorp/terraform/issues/7523))
* provider/aws: Add support for Kinesis streams shard-level metrics ([#7684](https://github.com/hashicorp/terraform/issues/7684))
* provider/aws: Support create / update greater than twenty db parameters in `aws_db_parameter_group` ([#7364](https://github.com/hashicorp/terraform/issues/7364))
* provider/aws: expose network interface id in `aws_instance` ([#6751](https://github.com/hashicorp/terraform/issues/6751))
* provider/aws: Adding passthrough behavior for API Gateway integration ([#7801](https://github.com/hashicorp/terraform/issues/7801))
* provider/clc: Fix optional server password ([#6414](https://github.com/hashicorp/terraform/issues/6414))
* provider/cloudstack: Add support for affinity groups to `cloudstack_instance` ([#6898](https://github.com/hashicorp/terraform/issues/6898))
* provider/cloudstack: Enable swapping of ACLs without having to rebuild the network tier ([#6741](https://github.com/hashicorp/terraform/issues/6741))
* provider/cloudstack: Add project support to `cloudstack_network_acl` and `cloudstack_network_acl_rule` ([#7612](https://github.com/hashicorp/terraform/issues/7612))
* provider/cloudstack: Add option to set `root_disk_size` to `cloudstack_instance` ([#7070](https://github.com/hashicorp/terraform/issues/7070))
* provider/cloudstack: Do no longer force a new `cloudstack_instance` resource when updating `user_data` ([#7074](https://github.com/hashicorp/terraform/issues/7074))
* provider/cloudstack: Add option to set `security_group_names` to `cloudstack_instance` ([#7240](https://github.com/hashicorp/terraform/issues/7240))
* provider/cloudstack: Add option to set `affinity_group_names` to `cloudstack_instance` ([#7242](https://github.com/hashicorp/terraform/issues/7242))
* provider/datadog: Add support for 'require full window' and 'locked' ([#6738](https://github.com/hashicorp/terraform/issues/6738))
* provider/docker: Docker Container DNS Setting Enhancements ([#7392](https://github.com/hashicorp/terraform/issues/7392))
* provider/docker: Add `destroy_grace_seconds` option to stop container before delete ([#7513](https://github.com/hashicorp/terraform/issues/7513))
* provider/docker: Add `pull_trigger` option to `docker_image` to trigger pulling layers of a given image ([#7000](https://github.com/hashicorp/terraform/issues/7000))
* provider/fastly: Add support for Cache Settings ([#6781](https://github.com/hashicorp/terraform/issues/6781))
* provider/fastly: Add support for Service Request Settings on `fastly_service_v1` resources ([#6622](https://github.com/hashicorp/terraform/issues/6622))
* provider/fastly: Add support for custom VCL configuration ([#6662](https://github.com/hashicorp/terraform/issues/6662))
* provider/google: Support optional uuid naming for Instance Template ([#6604](https://github.com/hashicorp/terraform/issues/6604))
* provider/openstack: Add support for client certificate authentication ([#6279](https://github.com/hashicorp/terraform/issues/6279))
* provider/vsphere: `vsphere_virtual_machine` added support for `mac address` on `network_interface` ([#6966](https://github.com/hashicorp/terraform/issues/6966))
* core: Correct the previous fix for a bug causing "attribute not found" messages during destroy, as it was insufficient ([#6599](https://github.com/hashicorp/terraform/issues/6599))
* core: Fix issue causing syntax errors interpolating count attribute when value passed between modules ([#6833](https://github.com/hashicorp/terraform/issues/6833))
* core: Fix "diffs didn't match during apply" error for computed sets ([#7205](https://github.com/hashicorp/terraform/issues/7205))
* core: Fix issue where `terraform init .` would truncate existing files ([#7273](https://github.com/hashicorp/terraform/issues/7273))
* core: Don't compare diffs between maps with computed values ([#7249](https://github.com/hashicorp/terraform/issues/7249))
* core: Don't copy existing files over themselves when fetching modules ([#7273](https://github.com/hashicorp/terraform/issues/7273))
* core: Always increment the state serial number when upgrading the version ([#7402](https://github.com/hashicorp/terraform/issues/7402))
* core: Fix a crash during eval when we're upgrading an empty state ([#7403](https://github.com/hashicorp/terraform/issues/7403))
* core: Honor the `-state-out` flag when applying with a plan file ([#7443](https://github.com/hashicorp/terraform/issues/7443))
* core: Fix a panic when a `terraform_remote_state` data source doesn't exist ([#7464](https://github.com/hashicorp/terraform/issues/7464))
* core: Fix issue where `ignore_changes` caused incorrect diffs on dependent resources ([#7563](https://github.com/hashicorp/terraform/issues/7563))
* provider/aws: Manual changes to `aws_codedeploy_deployment_group` resources are now detected ([#7530](https://github.com/hashicorp/terraform/issues/7530))
* provider/aws: Changing keys in `aws_dynamodb_table` correctly force new resources ([#6829](https://github.com/hashicorp/terraform/issues/6829))
* provider/aws: Fix a bug where CloudWatch alarms are created repeatedly if the user does not have permission to use the the DescribeAlarms operation ([#7227](https://github.com/hashicorp/terraform/issues/7227))
* provider/aws: Fix crash in `aws_elasticache_parameter_group` occuring following edits in the console ([#6687](https://github.com/hashicorp/terraform/issues/6687))
* provider/aws: Fix issue reattaching a VPN gateway to a VPC ([#6987](https://github.com/hashicorp/terraform/issues/6987))
* provider/aws: Fix issue with Root Block Devices and encrypted flag in Launch Configurations ([#6512](https://github.com/hashicorp/terraform/issues/6512))
* provider/aws: If more ENIs are attached to `aws_instance`, the one w/ DeviceIndex `0` is always used in context of `aws_instance` (previously unpredictable) ([#6761](https://github.com/hashicorp/terraform/issues/6761))
* provider/aws: Handle spurious failures in resourceAwsSecurityGroupRuleRead ([#7377](https://github.com/hashicorp/terraform/issues/7377))
* provider/aws: Make 'stage_name' required in api_gateway_deployment ([#6797](https://github.com/hashicorp/terraform/issues/6797))
* provider/aws: Mark Lambda function as gone when it's gone ([#6924](https://github.com/hashicorp/terraform/issues/6924))
* provider/aws: Trim trailing `.` from `name` in `aws_route53_record` resources to prevent spurious diffs ([#6592](https://github.com/hashicorp/terraform/issues/6592))
* provider/aws: Update Lambda functions on name change ([#7081](https://github.com/hashicorp/terraform/issues/7081))
* provider/aws: Updating state when `aws_sns_topic_subscription` is missing ([#6629](https://github.com/hashicorp/terraform/issues/6629))
* provider/aws: `aws_codedeploy_deployment_group` panic when setting `on_premises_instance_tag_filter` ([#6617](https://github.com/hashicorp/terraform/issues/6617))
* provider/aws: `aws_db_instance` now defaults `publicly_accessible` to false ([#7117](https://github.com/hashicorp/terraform/issues/7117))
* provider/aws: `aws_opsworks_application.app_source` SSH key is write-only ([#6649](https://github.com/hashicorp/terraform/issues/6649))
* provider/aws: Fix issue with Elastic Beanstalk and invalid settings ([#7222](https://github.com/hashicorp/terraform/issues/7222))
* provider/aws: Fix issue where aws_app_cookie_stickiness_policy fails on destroy if LoadBalancer doesn't exist ([#7166](https://github.com/hashicorp/terraform/issues/7166))
* provider/aws: Stickiness Policy exists, but isn't assigned to the ELB ([#7188](https://github.com/hashicorp/terraform/issues/7188))
* provider/aws: Fix issue with `manage_bundler` on `aws_opsworks_layers` ([#7219](https://github.com/hashicorp/terraform/issues/7219))
* provider/aws: Set Elastic Beanstalk stack name back to state ([#7445](https://github.com/hashicorp/terraform/issues/7445))
* provider/aws: Allow recreation of VPC Peering Connection when state is rejected ([#7466](https://github.com/hashicorp/terraform/issues/7466))
* provider/aws: Remove EFS File System from State when NotFound ([#7437](https://github.com/hashicorp/terraform/issues/7437))
* provider/aws: `aws_customer_gateway` refreshing from state on deleted state ([#7482](https://github.com/hashicorp/terraform/issues/7482))
* provider/aws: Retry finding `aws_route` after creating it ([#7463](https://github.com/hashicorp/terraform/issues/7463))
* provider/aws: Refresh CloudWatch Group from state on 404 ([#7576](https://github.com/hashicorp/terraform/issues/7576))
* provider/aws: Adding in additional retry logic due to latency with delete of `db_option_group` ([#7312](https://github.com/hashicorp/terraform/issues/7312))
* provider/aws: Safely get ELB values ([#7585](https://github.com/hashicorp/terraform/issues/7585))
* provider/aws: Fix bug for recurring plans on ec2-classic and vpc in beanstalk ([#6491](https://github.com/hashicorp/terraform/issues/6491))
* provider/aws: Bump rds_cluster timeout to 15 mins ([#7604](https://github.com/hashicorp/terraform/issues/7604))
* provider/aws: Fix ICMP fields in `aws_network_acl_rule` to allow ICMP code 0 (echo reply) to be configured ([#7669](https://github.com/hashicorp/terraform/issues/7669))
* provider/aws: Fix bug with Updating `aws_autoscaling_group``enabled_metrics` ([#7698](https://github.com/hashicorp/terraform/issues/7698))
* provider/aws: Ignore IOPS on non io1 AWS root_block_device ([#7783](https://github.com/hashicorp/terraform/issues/7783))
* provider/aws: Ignore missing ENI attachment when trying to detach ENI ([#7185](https://github.com/hashicorp/terraform/issues/7185))
* provider/azurerm: Fixes terraform crash when using SSH keys with `azurerm_virtual_machine` ([#6766](https://github.com/hashicorp/terraform/issues/6766))
* provider/azurerm: Fix a bug causing 'diffs do not match' on `azurerm_network_interface` resources ([#6790](https://github.com/hashicorp/terraform/issues/6790))
* provider/azurerm: Normalizes `availability_set_id` casing to avoid spurious diffs in `azurerm_virtual_machine` ([#6768](https://github.com/hashicorp/terraform/issues/6768))
* provider/azurerm: Add support for storage container name validation ([#6852](https://github.com/hashicorp/terraform/issues/6852))
* provider/azurerm: Remove storage containers and blobs when storage accounts are not found ([#6855](https://github.com/hashicorp/terraform/issues/6855))
* provider/azurerm: `azurerm_virtual_machine` fix `additional_unattend_rm` Windows config option ([#7105](https://github.com/hashicorp/terraform/issues/7105))
* provider/azurerm: `azurerm_dns_cname_record` can create CNAME records again ([#7113](https://github.com/hashicorp/terraform/issues/7113))
* provider/azurerm: `azurerm_network_security_group` now waits for the provisioning state of `ready` before proceeding ([#7307](https://github.com/hashicorp/terraform/issues/7307))
* provider/azurerm: `computer_name` is now required for `azurerm_virtual_machine` resources ([#7308](https://github.com/hashicorp/terraform/issues/7308))
* provider/azurerm: destroy azurerm_virtual_machine OS Disk VHD on deletion ([#7584](https://github.com/hashicorp/terraform/issues/7584))
* provider/azurerm: changing the name of an `azurerm_virtual_machine` now forces a new resource ([#7646](https://github.com/hashicorp/terraform/issues/7646))
* provider/azurerm: azurerm_storage_account now returns storage keys value instead of their names ([#7674](https://github.com/hashicorp/terraform/issues/7674))
* provider/azurerm: `azurerm_virtual_machine` computer_name now Required ([#7308](https://github.com/hashicorp/terraform/issues/7308))
* provider/azurerm: Change of `availability_set_id` on `azurerm_virtual_machine` should ForceNew ([#7650](https://github.com/hashicorp/terraform/issues/7650))
* provider/azurerm: Wait for `azurerm_storage_account` to be available ([#7329](https://github.com/hashicorp/terraform/issues/7329))
* provider/cloudflare: Fix issue upgrading CloudFlare Records created before v0.6.15 ([#6969](https://github.com/hashicorp/terraform/issues/6969))
* provider/cloudstack: Fix using `cloudstack_network_acl` within a project ([#6743](https://github.com/hashicorp/terraform/issues/6743))
* provider/cloudstack: Fix refresing `cloudstack_network_acl_rule` when the associated ACL is deleted ([#7612](https://github.com/hashicorp/terraform/issues/7612))
* provider/cloudstack: Fix refresing `cloudstack_port_forward` when the associated IP address is no longer associated ([#7612](https://github.com/hashicorp/terraform/issues/7612))
* provider/cloudstack: Fix creating `cloudstack_network` with offerings that do not support specifying IP ranges ([#7612](https://github.com/hashicorp/terraform/issues/7612))
* provider/digitalocean: Stop `digitocean_droplet` forcing new resource on uppercase region ([#7044](https://github.com/hashicorp/terraform/issues/7044))
* provider/digitalocean: Reassign Floating IP when droplet changes ([#7411](https://github.com/hashicorp/terraform/issues/7411))
* provider/google: Fix a bug causing an error attempting to delete an already-deleted `google_compute_disk` ([#6689](https://github.com/hashicorp/terraform/issues/6689))
* provider/mysql: Specifying empty provider credentials no longer causes a panic ([#7211](https://github.com/hashicorp/terraform/issues/7211))
* provider/openstack: Reassociate Floating IP on network changes ([#6579](https://github.com/hashicorp/terraform/issues/6579))
* provider/openstack: Ensure CIDRs Are Lower Case ([#6864](https://github.com/hashicorp/terraform/issues/6864))
* provider/openstack: Rebuild Instances On Network Changes ([#6844](https://github.com/hashicorp/terraform/issues/6844))
* provider/openstack: Firewall rules are applied in the correct order ([#7194](https://github.com/hashicorp/terraform/issues/7194))
* provider/openstack: Fix Security Group EOF Error when Adding / Removing Multiple Groups ([#7468](https://github.com/hashicorp/terraform/issues/7468))
* provider/openstack: Fixing boot volumes interfering with block storage volumes list ([#7649](https://github.com/hashicorp/terraform/issues/7649))
* provider/vsphere: `gateway` and `ipv6_gateway` are now read from `vsphere_virtual_machine` resources ([#6522](https://github.com/hashicorp/terraform/issues/6522))
* provider/vsphere: `ipv*_gateway` parameters won't force a new `vsphere_virtual_machine` ([#6635](https://github.com/hashicorp/terraform/issues/6635))
* provider/vsphere: adding a `vsphere_virtual_machine` migration ([#7023](https://github.com/hashicorp/terraform/issues/7023))
* provider/vsphere: Don't require vsphere debug paths to be set ([#7027](https://github.com/hashicorp/terraform/issues/7027))
* provider/vsphere: Fix bug where `enable_disk_uuid` was not set on `vsphere_virtual_machine` resources ([#7275](https://github.com/hashicorp/terraform/issues/7275))
* provider/vsphere: Make `vsphere_virtual_machine``product_key` optional ([#7410](https://github.com/hashicorp/terraform/issues/7410))
* provider/vsphere: Refreshing devices list after adding a disk or cdrom controller ([#7167](https://github.com/hashicorp/terraform/issues/7167))
* provider/vsphere: `vsphere_virtual_machine` no longer has to be powered on to delete ([#7206](https://github.com/hashicorp/terraform/issues/7206))
* provider/vSphere: Fixes the hasBootableVmdk flag when attaching multiple disks ([#7804](https://github.com/hashicorp/terraform/issues/7804))
* provisioner/remote-exec: Properly seed random script paths so they are not deterministic across runs ([#7413](https://github.com/hashicorp/terraform/issues/7413))
* provider/aws: Add support for request parameters to `api_gateway_method`&`api_gateway_integration` ([#6501](https://github.com/hashicorp/terraform/issues/6501))
* provider/aws: Add support for response parameters to `api_gateway_method_response`&`api_gateway_integration_response` ([#6344](https://github.com/hashicorp/terraform/issues/6344))
* provider/aws: Allow empty S3 config in Cloudfront Origin ([#6487](https://github.com/hashicorp/terraform/issues/6487))
* provider/aws: Improve error handling in IAM Server Certificates ([#6442](https://github.com/hashicorp/terraform/issues/6442))
* provider/aws: Use `sts:GetCallerIdentity` as additional method for getting AWS account ID ([#6385](https://github.com/hashicorp/terraform/issues/6385))
* provider/aws: `aws_redshift_cluster``automated_snapshot_retention_period` didn't allow 0 value ([#6537](https://github.com/hashicorp/terraform/issues/6537))
* provider/azurerm: Increase timeout for ARM Template deployments to 40 minutes ([#6319](https://github.com/hashicorp/terraform/issues/6319))
* provider/azurerm: Make `private_ip_address` an exported field on `azurerm_network_interface` ([#6538](https://github.com/hashicorp/terraform/issues/6538))
* provider/azurerm: Add support for `tags` to `azurerm_virtual_machine` ([#6556](https://github.com/hashicorp/terraform/issues/6556))
* provider/azurerm: Add `os_type` and `image_uri` in `azurerm_virtual_machine` ([#6553](https://github.com/hashicorp/terraform/issues/6553))
* provider/cloudflare: Add proxied option to `cloudflare_record` ([#5508](https://github.com/hashicorp/terraform/issues/5508))
* provider/docker: Add ability to keep docker image locally on terraform destroy ([#6376](https://github.com/hashicorp/terraform/issues/6376))
* provider/fastly: Add S3 Log Streaming to Fastly Service ([#6378](https://github.com/hashicorp/terraform/issues/6378))
* provider/fastly: Add Conditions to Fastly Service ([#6481](https://github.com/hashicorp/terraform/issues/6481))
* provider/github: Add support for Github Enterprise via base_url configuration option ([#6434](https://github.com/hashicorp/terraform/issues/6434))
* provider/triton: Add support for specifying network interfaces on `triton machine` resources ([#6418](https://github.com/hashicorp/terraform/issues/6418))
* provider/triton: Deleted firewall rules no longer prevent refresh ([#6529](https://github.com/hashicorp/terraform/issues/6529))
* provider/vsphere: Add `skip_customization` option to `vsphere_virtual_machine` resources ([#6355](https://github.com/hashicorp/terraform/issues/6355))
* provider/vsphere: Add ability to specify and mount bootable vmdk in `vsphere_virtual_machine` ([#6146](https://github.com/hashicorp/terraform/issues/6146))
* provider/vsphere: Add support for IPV6 to `vsphere_virtual_machine` ([#6457](https://github.com/hashicorp/terraform/issues/6457))
* provider/vsphere: Add support for `memory_reservation` to `vsphere_virtual_machine` ([#6036](https://github.com/hashicorp/terraform/issues/6036))
* provider/vsphere: Checking for empty diskPath in `vsphere_virtual_machine` before creating ([#6400](https://github.com/hashicorp/terraform/issues/6400))
* provider/vsphere: Support updates to vcpu and memory on `vsphere_virtual_machine` ([#6356](https://github.com/hashicorp/terraform/issues/6356))
* remote/s3: Logic for loading credentials now follows the same [conventions as AWS provider](https://www.terraform.io/docs/providers/aws/index.html#authentication) which means it also supports EC2 role auth and session token (e.g. assumed IAM Roles) ([#5270](https://github.com/hashicorp/terraform/issues/5270))
* core: Boolean values in diffs are normalized to `true` and `false`, eliminating some erroneous diffs ([#6499](https://github.com/hashicorp/terraform/issues/6499))
* core: Fix a bug causing "attribute not found" messages during destroy ([#6557](https://github.com/hashicorp/terraform/issues/6557))
* provider/aws: Allow account ID checks on EC2 instances & w/ federated accounts ([#5030](https://github.com/hashicorp/terraform/issues/5030))
* provider/aws: Fix an eventually consistent issue aws_security_group_rule and possible duplications ([#6325](https://github.com/hashicorp/terraform/issues/6325))
* provider/aws: Fix bug where `aws_elastic_beanstalk_environment` ignored `wait_for_ready_timeout` ([#6358](https://github.com/hashicorp/terraform/issues/6358))
* provider/aws: Fix bug where `aws_elastic_beanstalk_environment` update config template didn't work ([#6342](https://github.com/hashicorp/terraform/issues/6342))
* provider/aws: Fix issue in updating CloudFront distribution LoggingConfig ([#6407](https://github.com/hashicorp/terraform/issues/6407))
* provider/aws: Fix issue in upgrading AutoScaling Policy to use `min_adjustment_magnitude` ([#6440](https://github.com/hashicorp/terraform/issues/6440))
* provider/aws: Fix issue with KMS Alias keys and name prefixes ([#6328](https://github.com/hashicorp/terraform/issues/6328))
* provider/aws: Fix issue with encrypted snapshots of block devices in `aws_launch_configuration` resources ([#6452](https://github.com/hashicorp/terraform/issues/6452))
* provider/aws: Fix read of `aws_cloudwatch_log_group` after an update is applied ([#6384](https://github.com/hashicorp/terraform/issues/6384))
* provider/aws: Fix updating `number_of_nodes` on `aws_redshift_cluster` ([#6333](https://github.com/hashicorp/terraform/issues/6333))
* provider/aws: Omit `aws_cloudfront_distribution` custom_error fields when not explicitly set ([#6382](https://github.com/hashicorp/terraform/issues/6382))
* provider/aws: Refresh state on `aws_sqs_queue` not found ([#6381](https://github.com/hashicorp/terraform/issues/6381))
* provider/aws: Respect `selection_pattern` in `aws_api_gateway_integration_response` (previously ignored field) ([#5893](https://github.com/hashicorp/terraform/issues/5893))
* provider/aws: `aws_cloudfront_distribution` resources now require the `cookies` argument ([#6505](https://github.com/hashicorp/terraform/issues/6505))
* provider/aws: `aws_route` crash when used with `aws_vpc_endpoint` ([#6338](https://github.com/hashicorp/terraform/issues/6338))
* provider/aws: validate `cluster_id` length for `aws_elasticache_cluster` ([#6330](https://github.com/hashicorp/terraform/issues/6330))
* provider/azurerm: `ssh_keys` can now be set for `azurerm_virtual_machine` resources, allowing provisioning ([#6541](https://github.com/hashicorp/terraform/issues/6541))
* provider/azurerm: Fix issue that updating `azurerm_virtual_machine` was failing due to empty adminPassword ([#6528](https://github.com/hashicorp/terraform/issues/6528))
* provider/azurerm: `storage_data_disk` settings now work correctly on `azurerm_virtual_machine` resources ([#6543](https://github.com/hashicorp/terraform/issues/6543))
* provider/cloudflare: can manage apex records ([#6449](https://github.com/hashicorp/terraform/issues/6449))
* provider/cloudflare: won't refresh with incorrect record if names match ([#6449](https://github.com/hashicorp/terraform/issues/6449))
* provider/datadog: `notify_no_data` and `no_data_timeframe` are set correctly for `datadog_monitor` resources ([#6509](https://github.com/hashicorp/terraform/issues/6509))
* provider/docker: Fix crash when using empty string in the `command` list in `docker_container` resources ([#6424](https://github.com/hashicorp/terraform/issues/6424))
* provider/vsphere: Memory reservations are now set correctly in `vsphere_virtual_machine` resources ([#6482](https://github.com/hashicorp/terraform/issues/6482))
*`aws_instance` - if you still use `security_groups` field for SG IDs - i.e. inside VPC, this will generate diffs during `plan` and `apply` will **recreate** the resource. Terraform expects IDs (VPC SGs) inside `vpc_security_group_ids`.
* command/apply: Output will now show periodic status updates of slow resources. ([#6163](https://github.com/hashicorp/terraform/issues/6163))
* core: Variables passed between modules are now type checked ([#6185](https://github.com/hashicorp/terraform/issues/6185))
* core: Smaller release binaries by stripping debug information ([#6238](https://github.com/hashicorp/terraform/issues/6238))
* provider/aws: Add support for Step Scaling in `aws_autoscaling_policy` ([#4277](https://github.com/hashicorp/terraform/issues/4277))
* provider/aws: Add support for `cname_prefix` to `aws_elastic_beanstalk_environment` resource ([#5966](https://github.com/hashicorp/terraform/issues/5966))
* provider/aws: Add support for trigger_configuration to `aws_codedeploy_deployment_group` ([#5599](https://github.com/hashicorp/terraform/issues/5599))
* provider/aws: Adding outputs for elastic_beanstalk_environment resource ([#5915](https://github.com/hashicorp/terraform/issues/5915))
* provider/aws: Adds `wait_for_ready_timeout` option to `aws_elastic_beanstalk_environment` ([#5967](https://github.com/hashicorp/terraform/issues/5967))
* provider/aws: Allow `aws_db_subnet_group` description to be updated ([#5921](https://github.com/hashicorp/terraform/issues/5921))
* provider/aws: Allow multiple EIPs to associate to single ENI ([#6070](https://github.com/hashicorp/terraform/issues/6070))
* provider/aws: Change `aws_elb` access_logs to list type ([#5065](https://github.com/hashicorp/terraform/issues/5065))
* provider/aws: Check that InternetGateway exists before returning from creation ([#6105](https://github.com/hashicorp/terraform/issues/6105))
* provider/aws: Don't Base64-encode EC2 userdata if it is already Base64 encoded ([#6140](https://github.com/hashicorp/terraform/issues/6140))
* provider/aws: Making the Cloudwatch Event Rule Target `target_id` optional ([#5787](https://github.com/hashicorp/terraform/issues/5787))
* provider/aws: Timeouts for `elasticsearch_domain` are increased ([#5910](https://github.com/hashicorp/terraform/issues/5910))
* provider/aws: `aws_codecommit_repository` set `default_branch` only if defined ([#5904](https://github.com/hashicorp/terraform/issues/5904))
* provider/aws: `aws_redshift_cluster` allows usernames with underscore in it ([#5935](https://github.com/hashicorp/terraform/issues/5935))
* provider/aws: normalise json for `aws_sns_topic` ([#6089](https://github.com/hashicorp/terraform/issues/6089))
* provider/aws: normalize json for `aws_cloudwatch_event_rule` ([#6025](https://github.com/hashicorp/terraform/issues/6025))
* provider/aws: increase timeout for aws_redshift_cluster ([#6305](https://github.com/hashicorp/terraform/issues/6305))
* provider/aws: Opsworks layers now support `custom_json` argument ([#4272](https://github.com/hashicorp/terraform/issues/4272))
* provider/aws: Added migration for `tier` attribute in `aws_elastic_beanstalk_environment` ([#6167](https://github.com/hashicorp/terraform/issues/6167))
* provider/aws: Use resource.Retry for route creation and deletion ([#6225](https://github.com/hashicorp/terraform/issues/6225))
* provider/aws: Add support S3 Bucket Lifecycle Rule ([#6220](https://github.com/hashicorp/terraform/issues/6220))
* provider/clc: Override default `account` alias in provider config ([#5785](https://github.com/hashicorp/terraform/issues/5785))
* provider/cloudstack: Deprecate `ipaddress` in favour of `ip_address` in all resources ([#6010](https://github.com/hashicorp/terraform/issues/6010))
* provider/cloudstack: Deprecate allowing names (instead of IDs) for parameters that reference other resources ([#6123](https://github.com/hashicorp/terraform/issues/6123))
* provider/datadog: Add heredoc support to message, escalation_message, and query ([#5788](https://github.com/hashicorp/terraform/issues/5788))
* provider/docker: Add support for docker run --user option ([#5300](https://github.com/hashicorp/terraform/issues/5300))
* provider/github: Add support for privacy to `github_team` ([#6116](https://github.com/hashicorp/terraform/issues/6116))
* provider/google: Accept GOOGLE_CLOUD_KEYFILE_JSON env var for credentials ([#6007](https://github.com/hashicorp/terraform/issues/6007))
* provider/google: Add "project" argument and attribute to all GCP compute resources which inherit from the provider's value ([#6112](https://github.com/hashicorp/terraform/issues/6112))
* provider/google: Make "project" attribute on provider configuration optional ([#6112](https://github.com/hashicorp/terraform/issues/6112))
* provider/google: Read more common configuration values from the environment and clarify precedence ordering ([#6114](https://github.com/hashicorp/terraform/issues/6114))
* provider/google: `addons_config` and `subnetwork` added as attributes to `google_container_cluster` ([#5871](https://github.com/hashicorp/terraform/issues/5871))
* provider/fastly: Add support for Request Headers ([#6197](https://github.com/hashicorp/terraform/issues/6197))
* provider/fastly: Add support for Gzip rules ([#6247](https://github.com/hashicorp/terraform/issues/6247))
* provider/openstack: Add value_specs argument and attribute for routers ([#4898](https://github.com/hashicorp/terraform/issues/4898))
* provider/openstack: Allow subnets with no gateway ([#6060](https://github.com/hashicorp/terraform/issues/6060))
* provider/postgresql: New `ssl_mode` argument allowing different SSL usage tradeoffs ([#6008](https://github.com/hashicorp/terraform/issues/6008))
* provider/vsphere: Support for linked clones and Windows-specific guest config options ([#6087](https://github.com/hashicorp/terraform/issues/6087))
* provider/vsphere: Checking for Powered Off State before `vsphere_virtual_machine` deletion ([#6283](https://github.com/hashicorp/terraform/issues/6283))
* provider/vsphere: Support mounting ISO images to virtual cdrom drives ([#4243](https://github.com/hashicorp/terraform/issues/4243))
* provider/vsphere: Fix missing ssh connection info ([#4283](https://github.com/hashicorp/terraform/issues/4283))
* provider/google: Deprecate unused "region" attribute in `global_forwarding_rule`; this attribute was never used anywhere in the computation of the resource ([#6112](https://github.com/hashicorp/terraform/issues/6112))
* provider/cloudstack: Add group attribute to `cloudstack_instance` resource ([#6023](https://github.com/hashicorp/terraform/issues/6023))
* provider/azurerm: Provider meaningful error message when credentials not correct ([#6290](https://github.com/hashicorp/terraform/issues/6290))
* provider/cloudstack: Improve support for using projects ([#6282](https://github.com/hashicorp/terraform/issues/6282))
* provider/aws: Fix issue with changing iops when also changing storage type to io1 on RDS ([#5676](https://github.com/hashicorp/terraform/issues/5676))
* provider/aws: Fix issue with retrying deletion of Network ACLs ([#5954](https://github.com/hashicorp/terraform/issues/5954))
* provider/aws: Fix potential crash when receiving malformed `aws_route` API responses ([#5867](https://github.com/hashicorp/terraform/issues/5867))
* provider/aws: Guard against empty responses from Lambda Permissions ([#5838](https://github.com/hashicorp/terraform/issues/5838))
* provider/aws: Normalize and compact SQS Redrive, Policy JSON ([#5888](https://github.com/hashicorp/terraform/issues/5888))
* provider/aws: Remove CloudTrail Trail from state if not found ([#6024](https://github.com/hashicorp/terraform/issues/6024))
* provider/aws: Fix crash in AWS S3 Bucket when website index/error is empty ([#6269](https://github.com/hashicorp/terraform/issues/6269))
* provider/aws: Report better error message in `aws_route53_record` when `set_identifier` is required ([#5777](https://github.com/hashicorp/terraform/issues/5777))
* provider/aws: Show human-readable error message when failing to read an EBS volume ([#6038](https://github.com/hashicorp/terraform/issues/6038))
* provider/aws: set ASG `health_check_grace_period` default to 300 ([#5830](https://github.com/hashicorp/terraform/issues/5830))
* provider/aws: Fix issue with with Opsworks and empty Custom Cook Book sources ([#6078](https://github.com/hashicorp/terraform/issues/6078))
* provider/aws: wait for IAM instance profile to propagate when creating Opsworks stacks ([#6049](https://github.com/hashicorp/terraform/issues/6049))
* provider/aws: Don't read back `aws_opsworks_stack` cookbooks source password ([#6203](https://github.com/hashicorp/terraform/issues/6203))
* provider/aws: Resolves DefaultOS and ConfigurationManager conflict on `aws_opsworks_stack` ([#6244](https://github.com/hashicorp/terraform/issues/6244))
* provider/aws: Renaming `aws_elastic_beanstalk_configuration_template``option_settings` to `setting` ([#6043](https://github.com/hashicorp/terraform/issues/6043))
* provider/aws: provider/aws: Refresh state on `aws_directory_service_directory` not found ([#6294](https://github.com/hashicorp/terraform/issues/6294))
* provider/aws: `aws_elb``cross_zone_load_balancing` is not refreshed in the state file ([#6295](https://github.com/hashicorp/terraform/issues/6295))
* core: provisioners connecting via WinRM now respect HTTPS settings ([#5761](https://github.com/hashicorp/terraform/issues/5761))
* provider/aws: `aws_db_instance` now makes `identifier` optional and generates a unique ID when it is omitted ([#5723](https://github.com/hashicorp/terraform/issues/5723))
* provider/aws: `aws_redshift_cluster` now allows`publicly_accessible` to be modified ([#5721](https://github.com/hashicorp/terraform/issues/5721))
* provider/aws: `aws_kms_alias` now allows name to be auto-generated with a `name_prefix` ([#5594](https://github.com/hashicorp/terraform/issues/5594))
* core: Color output is now shown correctly when running Terraform on Windows ([#5718](https://github.com/hashicorp/terraform/issues/5718))
* core: HEREDOCs can now be indented in line with configuration using `<<-` and hanging indent is removed ([#5740](https://github.com/hashicorp/terraform/issues/5740))
* core: Invalid HCL syntax of nested object blocks no longer causes a crash ([#5740](https://github.com/hashicorp/terraform/issues/5740))
* core: Local directory-based modules now use junctions instead of symbolic links on Windows ([#5739](https://github.com/hashicorp/terraform/issues/5739))
* core: Modules sourced from a Mercurial repository now work correctly on Windows ([#5739](https://github.com/hashicorp/terraform/issues/5739))
* core: Address some issues with ignore_changes ([#5635](https://github.com/hashicorp/terraform/issues/5635))
* core: Add a lock to fix an interpolation issue caught by the Go 1.6 concurrent map access detector ([#5772](https://github.com/hashicorp/terraform/issues/5772))
* provider/aws: Fix crash when an `aws_rds_cluster_instance` is removed outside of Terraform ([#5717](https://github.com/hashicorp/terraform/issues/5717))
* provider/aws: `aws_cloudformation_stack` use `timeout_in_minutes` for retry timeout to prevent unecessary timeouts ([#5712](https://github.com/hashicorp/terraform/issues/5712))
* provider/aws: `aws_lambda_function` resources no longer error on refresh if deleted externally to Terraform ([#5668](https://github.com/hashicorp/terraform/issues/5668))
* provider/aws: `aws_vpn_connection` resources deleted via the console on longer cause a crash ([#5747](https://github.com/hashicorp/terraform/issues/5747))
* provider/aws: Fix crasher in Elastic Beanstalk Configuration when using options ([#5756](https://github.com/hashicorp/terraform/issues/5756))
* provider/aws: Fix issue preventing `aws_opsworks_stck` from working with Windows set as the OS ([#5724](https://github.com/hashicorp/terraform/issues/5724))
* provider/digitalocean: `digitalocean_ssh_key` resources no longer cause a panic if there is no network connectivity ([#5748](https://github.com/hashicorp/terraform/issues/5748))
* provider/google: Default description `google_dns_managed_zone` resources to "Managed By Terraform" ([#5428](https://github.com/hashicorp/terraform/issues/5428))
* provider/google: Fix error message on invalid instance URL for `google_compute_instance_group` ([#5715](https://github.com/hashicorp/terraform/issues/5715))
* provider/vsphere: provide `host` to provisioner connections ([#5558](https://github.com/hashicorp/terraform/issues/5558))
* provisioner/remote-exec: Address race condition introduced with script cleanup step introduced in 0.6.13 ([#5751](https://github.com/hashicorp/terraform/issues/5751))
* provider/aws: `aws_s3_bucket_object` field `etag` is now trimming off quotes (returns raw MD5 hash) ([#5305](https://github.com/hashicorp/terraform/issues/5305))
* provider/aws: `aws_autoscaling_group` now supports metrics collection, so a diff installing the default value of `1Minute` for the `metrics_granularity` field is expected. This diff should resolve in the next `terraform apply` w/ no AWS API calls ([#4688](https://github.com/hashicorp/terraform/issues/4688))
* provider/consul: `consul_keys``key` blocks now respect `delete` flag for removing individual blocks. Previously keys would be deleted only when the entire resource was removed.
* provider/google: `next_hop_network` on `google_compute_route` is now read-only, to mirror the behavior in the official docs ([#5564](https://github.com/hashicorp/terraform/issues/5564))
* state/remote/http: PUT requests for this backend will now have `Content-Type: application/json` instead of `application/octet-stream` ([#5499](https://github.com/hashicorp/terraform/issues/5499))
* provider/aws: Add `repository_link` as a computed field for `aws_ecr_repository` ([#5524](https://github.com/hashicorp/terraform/issues/5524))
* provider/aws: Add ability to update Route53 zone comments ([#5318](https://github.com/hashicorp/terraform/issues/5318))
* provider/aws: Add support for Metrics Collection to `aws_autoscaling_group` ([#4688](https://github.com/hashicorp/terraform/issues/4688))
* provider/aws: Add support for `description` to `aws_network_interface` ([#5523](https://github.com/hashicorp/terraform/issues/5523))
* provider/aws: Add support for `storage_encrypted` to `aws_rds_cluster` ([#5520](https://github.com/hashicorp/terraform/issues/5520))
* provider/aws: Add support for routing rules on `aws_s3_bucket` resources ([#5327](https://github.com/hashicorp/terraform/issues/5327))
* provider/aws: Enable updates & versioning for `aws_s3_bucket_object` ([#5305](https://github.com/hashicorp/terraform/issues/5305))
* provider/aws: Guard against Nil Reference in Redshift Endpoints ([#5593](https://github.com/hashicorp/terraform/issues/5593))
* provider/aws: Lambda S3 object version defaults to `$LATEST` if unspecified ([#5370](https://github.com/hashicorp/terraform/issues/5370))
* provider/aws: Retry DB Creation on IAM propigation error ([#5515](https://github.com/hashicorp/terraform/issues/5515))
* provider/aws: Support KMS encryption of S3 objects ([#5453](https://github.com/hashicorp/terraform/issues/5453))
* provider/aws: `aws_autoscaling_lifecycle_hook` now have `notification_target_arn` and `role_arn` as optional ([#5616](https://github.com/hashicorp/terraform/issues/5616))
* provider/aws: `aws_ecs_service` validates number of `load_balancer`s before creation/updates ([#5605](https://github.com/hashicorp/terraform/issues/5605))
* provider/aws: send Terraform version in User-Agent ([#5621](https://github.com/hashicorp/terraform/issues/5621))
* provider/cloudflare: Change `cloudflare_record` type to ForceNew ([#5353](https://github.com/hashicorp/terraform/issues/5353))
* provider/consul: `consul_keys` now detects drift and supports deletion of individual `key` blocks ([#5210](https://github.com/hashicorp/terraform/issues/5210))
* provider/digitalocean: Guard against Nil reference in `digitalocean_droplet` ([#5588](https://github.com/hashicorp/terraform/issues/5588))
* provider/docker: Add support for `unless-stopped` to docker container `restart_policy` ([#5337](https://github.com/hashicorp/terraform/issues/5337))
* provider/google: Mark `next_hop_network` as read-only on `google_compute_route` ([#5564](https://github.com/hashicorp/terraform/issues/5564))
* provider/google: Validate VPN tunnel peer_ip at plan time ([#5501](https://github.com/hashicorp/terraform/issues/5501))
* provider/openstack: Add Support for Domain ID and Domain Name environment variables ([#5355](https://github.com/hashicorp/terraform/issues/5355))
* provider/openstack: Add support for instances to have multiple ephemeral disks. ([#5131](https://github.com/hashicorp/terraform/issues/5131))
* provider/openstack: Re-Add server.AccessIPv4 and server.AccessIPv6 ([#5366](https://github.com/hashicorp/terraform/issues/5366))
* provider/vsphere: Add support for disk init types ([#4284](https://github.com/hashicorp/terraform/issues/4284))
* provisioner/remote-exec: Clear out scripts after uploading ([#5577](https://github.com/hashicorp/terraform/issues/5577))
* state/remote/http: Change content type of PUT requests to the more appropriate `application/json` ([#5499](https://github.com/hashicorp/terraform/issues/5499))
* core: Disallow negative indices in the element() interpolation function, preventing crash ([#5263](https://github.com/hashicorp/terraform/issues/5263))
* core: Fix issue that caused tainted resource destroys to be improperly filtered out when using -target and a plan file ([#5516](https://github.com/hashicorp/terraform/issues/5516))
* core: Fix several issues with retry logic causing spurious "timeout while waiting for state to become ..." errors and unnecessary retry loops ([#5460](https://github.com/hashicorp/terraform/issues/5460)), ([#5538](https://github.com/hashicorp/terraform/issues/5538)), ([#5543](https://github.com/hashicorp/terraform/issues/5543)), ([#5553](https://github.com/hashicorp/terraform/issues/5553))
* core: Includes upstream HCL fix to properly detect unbalanced braces and throw an error ([#5400](https://github.com/hashicorp/terraform/issues/5400))
* provider/aws: Fix EC2 Classic SG Rule issue when referencing rules by name ([#5533](https://github.com/hashicorp/terraform/issues/5533))
* provider/aws: Fix `aws_cloudformation_stack` update for `parameters`&`capabilities` if unmodified ([#5603](https://github.com/hashicorp/terraform/issues/5603))
* provider/aws: Fix a bug where AWS Kinesis Stream includes closed shards in the shard_count ([#5401](https://github.com/hashicorp/terraform/issues/5401))
* provider/aws: Fix a bug where ElasticSearch Domain tags were not being set correctly ([#5361](https://github.com/hashicorp/terraform/issues/5361))
* provider/aws: Fix a bug where `aws_route` would show continual changes in the plan when not computed ([#5321](https://github.com/hashicorp/terraform/issues/5321))
* provider/aws: Fix a bug where `publicly_assessible` wasn't being set to state in `aws_db_instance` ([#5535](https://github.com/hashicorp/terraform/issues/5535))
* provider/aws: Fix a bug where listener protocol on `aws_elb` resources was case insensitive ([#5376](https://github.com/hashicorp/terraform/issues/5376))
* provider/aws: Fix a bug which caused panics creating rules on security groups in EC2 Classic ([#5329](https://github.com/hashicorp/terraform/issues/5329))
* provider/aws: Fix crash when `aws_lambda_function` VpcId is nil ([#5182](https://github.com/hashicorp/terraform/issues/5182))
* provider/aws: `aws_lambda_function` can be properly updated, either via `s3_object_version` or via `filename`&`source_code_hash` as described in docs ([#5239](https://github.com/hashicorp/terraform/issues/5239))
* provider/google: Fix managed instance group preemptible instance creation ([#4834](https://github.com/hashicorp/terraform/issues/4834))
* provider/openstack: Account for a 403 reply when os-tenant-networks is disabled ([#5432](https://github.com/hashicorp/terraform/issues/5432))
* provider/openstack: Fix crashing during certain network updates in instances ([#5365](https://github.com/hashicorp/terraform/issues/5365))
* provider/openstack: Fix create/delete statuses in load balancing resources ([#5557](https://github.com/hashicorp/terraform/issues/5557))
* provider/openstack: Fix race condition between instance deletion and volume detachment ([#5359](https://github.com/hashicorp/terraform/issues/5359))
* provider/template: Warn when `template` attribute specified as path ([#5563](https://github.com/hashicorp/terraform/issues/5563))
* core: Backend names are now down cased during `init` in the same manner as `remote config` ([#5012](https://github.com/hashicorp/terraform/issues/5012))
* core: Upgrade resource name validation warning to an error as planned ([#5272](https://github.com/hashicorp/terraform/issues/5272))
* core: Fix bug where `ignore_changes` could produce "diffs didn't match during apply" errors ([#4965](https://github.com/hashicorp/terraform/issues/4965))
* core: Improve handling of Provisioners in the graph, fixing "Provisioner already initialized" errors ([#4877](https://github.com/hashicorp/terraform/issues/4877))
from working properly with CBD resources ([#5096](https://github.com/hashicorp/terraform/issues/5096))
* core: Error instead of panic on self var in wrong scope ([#5273](https://github.com/hashicorp/terraform/issues/5273))
* provider/aws: Fix Copy of Tags to DB Instance when created from Snapshot ([#5197](https://github.com/hashicorp/terraform/issues/5197))
* provider/aws: Fix DynamoDB Table Refresh to ensure deleted tables are removed from state ([#4943](https://github.com/hashicorp/terraform/issues/4943))
* provider/aws: Fix issue applying security group changes in EC2 Classic RDS for aws_db_instance ([#4969](https://github.com/hashicorp/terraform/issues/4969))
* provider/aws: Fix reading auto scaling group availability zones ([#5044](https://github.com/hashicorp/terraform/issues/5044))
* provider/aws: Fix reading auto scaling group load balancers ([#5045](https://github.com/hashicorp/terraform/issues/5045))
* provider/aws: Fix `aws_redshift_cluster` to allow `publicly_accessible` to be false ([#5262](https://github.com/hashicorp/terraform/issues/5262))
* provider/aws: Wait longer for internet gateways to detach ([#5120](https://github.com/hashicorp/terraform/issues/5120))
* provider/aws: Fix issue reading auto scaling group termination policies ([#5101](https://github.com/hashicorp/terraform/issues/5101))
* provider/cloudflare: `ttl` no longer shows a change on each plan on `cloudflare_record` resources ([#5042](https://github.com/hashicorp/terraform/issues/5042))
* provider/docker: Fix the default docker_host value ([#5088](https://github.com/hashicorp/terraform/issues/5088))
* provider/google: Fix backend service max_utilization attribute ([#5075](https://github.com/hashicorp/terraform/issues/5075))
* provider/google: Fix reading of `google_compute_vpn_gateway` without an explicit ([#5125](https://github.com/hashicorp/terraform/issues/5125))
* provider/google: Fix crash when setting `ack_deadline_seconds` on `google_pubsub_subscription` ([#5110](https://github.com/hashicorp/terraform/issues/5110))
* provider/openstack: Fix crash when `access_network` was not defined in instances ([#4966](https://github.com/hashicorp/terraform/issues/4966))
* provider/powerdns: Fix refresh of `powerdns_record` no longer fails if the record name contains a `-` ([#5228](https://github.com/hashicorp/terraform/issues/5228))
* provider/vcd: Wait for DHCP assignment when creating `vcd_vapp` resources with no static IP assignment ([#5195](https://github.com/hashicorp/terraform/issues/5195))
* **New builtin function:** `trimspace` for trimming whitespaces ([#4910](https://github.com/hashicorp/terraform/issues/4910))
* **New builtin function:** `base64sha256` for base64 encoding raw sha256 sum of a given string ([#4899](https://github.com/hashicorp/terraform/issues/4899))
* provider/template: Remove unnecessary mime-type validation from `template_cloudinit_config` resources ([#4873](https://github.com/hashicorp/terraform/issues/4873))
* provider/template: Correct spelling of "Boundary" in the part separator of rendered `template_cloudinit_config` resources ([#4873](https://github.com/hashicorp/terraform/issues/4873))
* provider/aws: Provide a better message if no AWS creds are found ([#4869](https://github.com/hashicorp/terraform/issues/4869))
* provider/aws: Fix regression with VPCs and ClassicLink for regions that do not support it ([#4879](https://github.com/hashicorp/terraform/issues/4879))
* provider/aws: Change VPC ClassicLink to be computed ([#4933](https://github.com/hashicorp/terraform/issues/4933))
* provider/aws: Fix SNS Topic Refresh to ensure deleted topics are removed from state ([#4891](https://github.com/hashicorp/terraform/issues/4891))
* provider/aws: Refactor Route53 record to fix regression in deleting records created in previous versions of Terraform ([#4892](https://github.com/hashicorp/terraform/issues/4892))
* provider/azurerm: Fix panic if no creds supplied ([#4902](https://github.com/hashicorp/terraform/issues/4902))
* provider/openstack: Changing the port resource to mark the ip_address as optional ([#4850](https://github.com/hashicorp/terraform/issues/4850))
* provider/docker: Catch potential custom network errors in docker ([#4918](https://github.com/hashicorp/terraform/issues/4918))
* The `-module-depth` flag available on `plan`, `apply`, `show`, and `graph` now defaults to `-1`, causing
resources within modules to be expanded in command output. This is only a cosmetic change; it does not affect
any behavior.
* This release includes a bugfix for `$${}` interpolation escaping. These strings are now properly converted to `${}`
during interpolation. This may cause diffs on existing configurations in certain cases.
* Users of `consul_keys` should note that the `value` sub-attribute of `key` will no longer be updated with the remote value of the key. It should be only used to _set_ a key in Consul K/V. To reference key values, use the `var` attribute.
* The 0.6.9 release contained a regression in `aws_autoscaling_group` capacity waiting behavior for configs where `min_elb_capacity != desired_capacity` or `min_size != desired_capacity`. This release remedies that regression by un-deprecating `min_elb_capacity` and restoring the prior behavior.
* Users of `aws_security_group` may notice new diffs in initial plans with 0.6.10 due to a bugfix that fixes drift detection on nested security group rules. These new diffs should reflect the actual state of the resources, which Terraform previously was unable to see.
* core: Add `sha256()` interpolation function ([#4704](https://github.com/hashicorp/terraform/issues/4704))
* core: Validate lifecycle keys to show helpful error messages whe they are mistypes ([#4745](https://github.com/hashicorp/terraform/issues/4745))
* core: Default `module-depth` parameter to `-1`, which expands resources within modules in command output ([#4763](https://github.com/hashicorp/terraform/issues/4763))
* core: Variable types may now be specified explicitly using the `type` argument ([#4795](https://github.com/hashicorp/terraform/issues/4795))
* provider/aws: Add new parameters `az_mode` and `availability_zone(s)` in ElastiCache ([#4631](https://github.com/hashicorp/terraform/issues/4631))
* provider/aws: Allow ap-northeast-2 (Seoul) as valid region ([#4637](https://github.com/hashicorp/terraform/issues/4637))
* provider/aws: Added support for `encrypted` on `ebs_block_devices` in Launch Configurations ([#4481](https://github.com/hashicorp/terraform/issues/4481))
* provider/aws: Retry Listener Creation for ELBs ([#4825](https://github.com/hashicorp/terraform/issues/4825))
and Directory Connectors ([#4388](https://github.com/hashicorp/terraform/issues/4388))
* provider/aws: Mark some `aws_db_instance` fields as optional ([#3138](https://github.com/hashicorp/terraform/issues/3138))
* provider/digitalocean: Add support for reassigning `digitalocean_floating_ip` resources ([#4476](https://github.com/hashicorp/terraform/issues/4476))
* provider/dme: Add support for Global Traffic Director locations on `dme_record` resources ([#4305](https://github.com/hashicorp/terraform/issues/4305))
* provider/docker: Add support for adding host entries on `docker_container` resources ([#3463](https://github.com/hashicorp/terraform/issues/3463))
* provider/docker: Add support for mounting named volumes on `docker_container` resources ([#4480](https://github.com/hashicorp/terraform/issues/4480))
* provider/google: Add content field to bucket object ([#3893](https://github.com/hashicorp/terraform/issues/3893))
* provider/google: Add support for `named_port` blocks on `google_compute_instance_group_manager` resources ([#4605](https://github.com/hashicorp/terraform/issues/4605))
* provider/openstack: Add "personality" support to instance resource ([#4623](https://github.com/hashicorp/terraform/issues/4623))
* provider/packet: Handle external state changes for Packet resources gracefully ([#4676](https://github.com/hashicorp/terraform/issues/4676))
* provider/tls: `tls_private_key` now exports attributes with public key in both PEM and OpenSSH format ([#4606](https://github.com/hashicorp/terraform/issues/4606))
* provider/vdc: Add `allow_unverified_ssl` for connections to vCloud API ([#4811](https://github.com/hashicorp/terraform/issues/4811))
* state/remote: Allow KMS Key Encryption to be used with S3 backend ([#2903](https://github.com/hashicorp/terraform/issues/2903))
* core: Write planfile even on empty plans ([#4766](https://github.com/hashicorp/terraform/issues/4766))
* core: Add validation error when output is missing value field ([#4762](https://github.com/hashicorp/terraform/issues/4762))
* core: Fix improper handling of orphan resources when targeting ([#4574](https://github.com/hashicorp/terraform/issues/4574))
* core: Properly handle references to computed set attributes ([#4840](https://github.com/hashicorp/terraform/issues/4840))
* config: Detect a specific JSON edge case and show a helpful workaround ([#4746](https://github.com/hashicorp/terraform/issues/4746))
* provider/openstack: Ensure valid Security Group Rule attribute combination ([#4466](https://github.com/hashicorp/terraform/issues/4466))
* provider/openstack: Don't put fixed_ip in port creation request if not defined ([#4617](https://github.com/hashicorp/terraform/issues/4617))
* provider/google: Clarify SQL Database Instance recent name restriction ([#4577](https://github.com/hashicorp/terraform/issues/4577))
* provider/google: Split Instance network interface into two fields ([#4265](https://github.com/hashicorp/terraform/issues/4265))
* provider/aws: Error with empty list item on security group ([#4140](https://github.com/hashicorp/terraform/issues/4140))
* provider/aws: Fix issue with detecting drift in AWS Security Groups rules ([#4779](https://github.com/hashicorp/terraform/issues/4779))
* provider/aws: Trap Instance error from mismatched SG IDs and Names ([#4240](https://github.com/hashicorp/terraform/issues/4240))
* provider/aws: EBS optimised to force new resource in AWS Instance ([#4627](https://github.com/hashicorp/terraform/issues/4627))
* provider/aws: Wait for NACL rule to be visible ([#4734](https://github.com/hashicorp/terraform/issues/4734))
* provider/aws: `default_result` on `aws_autoscaling_lifecycle_hook` resources is now computed ([#4695](https://github.com/hashicorp/terraform/issues/4695))
* core: Change set internals for performance improvements ([#3992](https://github.com/hashicorp/terraform/issues/3992))
* core: Support HTTP basic auth in consul remote state ([#4166](https://github.com/hashicorp/terraform/issues/4166))
* core: Improve error message on resource arity mismatch ([#4244](https://github.com/hashicorp/terraform/issues/4244))
* core: Add support for unary operators + and - to the interpolation syntax ([#3621](https://github.com/hashicorp/terraform/issues/3621))
* core: Add SSH agent support for Windows ([#4323](https://github.com/hashicorp/terraform/issues/4323))
* core: Add `sha1()` interpolation function ([#4450](https://github.com/hashicorp/terraform/issues/4450))
* provider/aws: Add `placement_group` as an option for `aws_autoscaling_group` ([#3704](https://github.com/hashicorp/terraform/issues/3704))
* provider/aws: Add support for DynamoDB Table StreamSpecifications ([#4208](https://github.com/hashicorp/terraform/issues/4208))
* provider/aws: Add `name_prefix` to Security Groups ([#4167](https://github.com/hashicorp/terraform/issues/4167))
* provider/aws: Add support for removing nodes to `aws_elasticache_cluster` ([#3809](https://github.com/hashicorp/terraform/issues/3809))
* provider/aws: Add support for `skip_final_snapshot` to `aws_db_instance` ([#3853](https://github.com/hashicorp/terraform/issues/3853))
* provider/aws: Adding support for Tags to DB SecurityGroup ([#4260](https://github.com/hashicorp/terraform/issues/4260))
* provider/aws: Adding Tag support for DB Param Groups ([#4259](https://github.com/hashicorp/terraform/issues/4259))
* provider/aws: Fix issue with updated route ids for VPC Endpoints ([#4264](https://github.com/hashicorp/terraform/issues/4264))
* provider/aws: Added measure_latency option to Route 53 Health Check resource ([#3688](https://github.com/hashicorp/terraform/issues/3688))
* provider/aws: Validate IOPs for EBS Volumes ([#4146](https://github.com/hashicorp/terraform/issues/4146))
* provider/aws: DB Subnet group arn output ([#4261](https://github.com/hashicorp/terraform/issues/4261))
* provider/aws: Get full Kinesis streams view with pagination ([#4368](https://github.com/hashicorp/terraform/issues/4368))
* provider/aws: Allow changing private IPs for ENIs ([#4307](https://github.com/hashicorp/terraform/issues/4307))
* provider/aws: Retry MalformedPolicy errors due to newly created principals in S3 Buckets ([#4315](https://github.com/hashicorp/terraform/issues/4315))
* provider/aws: Validate `name` on `db_subnet_group` against AWS requirements ([#4340](https://github.com/hashicorp/terraform/issues/4340))
* provider/aws: wait for ASG capacity on update ([#3947](https://github.com/hashicorp/terraform/issues/3947))
* provider/aws: Add validation for ECR repository name ([#4431](https://github.com/hashicorp/terraform/issues/4431))
* provider/docker: Add support for setting the entry point on `docker_container` resources ([#3761](https://github.com/hashicorp/terraform/issues/3761))
* provider/docker: Add support for setting the restart policy on `docker_container` resources ([#3761](https://github.com/hashicorp/terraform/issues/3761))
* provider/docker: Add support for setting memory, swap and CPU shares on `docker_container` resources ([#3761](https://github.com/hashicorp/terraform/issues/3761))
* provider/docker: Add support for setting labels on `docker_container` resources ([#3761](https://github.com/hashicorp/terraform/issues/3761))
* provider/docker: Add support for setting log driver and options on `docker_container` resources ([#3761](https://github.com/hashicorp/terraform/issues/3761))
* provider/docker: Add support for settings network mode on `docker_container` resources ([#4475](https://github.com/hashicorp/terraform/issues/4475))
* provider/heroku: Improve handling of Applications within an Organization ([#4495](https://github.com/hashicorp/terraform/issues/4495))
* provider/vsphere: Add support for custom vm params on `vsphere_virtual_machine` ([#3867](https://github.com/hashicorp/terraform/issues/3867))
* provider/vsphere: Rename vcenter_server config parameter to something clearer ([#3718](https://github.com/hashicorp/terraform/issues/3718))
* provider/vsphere: Make allow_unverified_ssl a configuable on the provider ([#3933](https://github.com/hashicorp/terraform/issues/3933))
* provider/vsphere: Add folder handling for folder-qualified vm names ([#3939](https://github.com/hashicorp/terraform/issues/3939))
* provider/vsphere: Change ip_address parameter for ipv6 support ([#4035](https://github.com/hashicorp/terraform/issues/4035))
* provider/openstack: Increase instance timeout from 10 to 30 minutes ([#4223](https://github.com/hashicorp/terraform/issues/4223))
* provider/google: Add `restart_policy` attribute to `google_managed_instance_group` ([#3892](https://github.com/hashicorp/terraform/issues/3892))
* core: skip provider input for deprecated fields ([#4193](https://github.com/hashicorp/terraform/issues/4193))
* core: Fix issue which could cause fields that become empty to retain old values in the state ([#3257](https://github.com/hashicorp/terraform/issues/3257))
* provider/docker: Fix an issue running with Docker Swarm by looking up containers by ID instead of name ([#4148](https://github.com/hashicorp/terraform/issues/4148))
* provider/openstack: Better handling of load balancing resource state changes ([#3926](https://github.com/hashicorp/terraform/issues/3926))
* provider/aws: Treat `INACTIVE` ECS cluster as deleted ([#4364](https://github.com/hashicorp/terraform/issues/4364))
* provider/aws: Skip `source_security_group_id` determination logic for Classic ELBs ([#4075](https://github.com/hashicorp/terraform/issues/4075))
* provider/aws: Fix issue destroy Route 53 zone/record if it no longer exists ([#4198](https://github.com/hashicorp/terraform/issues/4198))
* provider/aws: Fix issue force destroying a versioned S3 bucket ([#4168](https://github.com/hashicorp/terraform/issues/4168))
* provider/aws: Update DB Replica to honor storage type ([#4155](https://github.com/hashicorp/terraform/issues/4155))
* provider/aws: Fix issue creating AWS RDS replicas across regions ([#4215](https://github.com/hashicorp/terraform/issues/4215))
* provider/aws: Fix issue with Route53 and zero weighted records ([#4427](https://github.com/hashicorp/terraform/issues/4427))
* provider/aws: Fix issue with iam_profile in aws_instance when a path is specified ([#3663](https://github.com/hashicorp/terraform/issues/3663))
* provider/aws: Refactor AWS Authentication chain to fix issue with authentication and IAM ([#4254](https://github.com/hashicorp/terraform/issues/4254))
* provider/aws: Fix issue with finding S3 Hosted Zone ID for eu-central-1 region ([#4236](https://github.com/hashicorp/terraform/issues/4236))
* provider/aws: Fix missing AMI issue with Launch Configurations ([#4242](https://github.com/hashicorp/terraform/issues/4242))
* provider/aws: Opsworks stack SSH key is write-only ([#4241](https://github.com/hashicorp/terraform/issues/4241))
* provider/aws: Update VPC Endpoint to correctly set route table ids ([#4392](https://github.com/hashicorp/terraform/issues/4392))
* provider/aws: Fix issue with nil parameter group value causing panic in `aws_db_parameter_group` ([#4318](https://github.com/hashicorp/terraform/issues/4318))
* provider/aws: Fix issue with Elastic IPs not recognizing when they have been unassigned manually ([#4387](https://github.com/hashicorp/terraform/issues/4387))
* provider/aws: Use body or URL for all CloudFormation stack updates ([#4370](https://github.com/hashicorp/terraform/issues/4370))
* provider/aws: Fix bug w/ changing ECS svc/ELB association ([#4366](https://github.com/hashicorp/terraform/issues/4366))
* provider/aws: Fix RDS unexpected state config ([#4490](https://github.com/hashicorp/terraform/issues/4490))
* provider/digitalocean: Fix issue where a floating IP attached to a missing droplet causes a panic ([#4214](https://github.com/hashicorp/terraform/issues/4214))
* provider/google: Fix project metadata sshKeys from showing up and causing unnecessary diffs ([#4512](https://github.com/hashicorp/terraform/issues/4512))
* provider/heroku: Retry drain create until log channel is assigned ([#4823](https://github.com/hashicorp/terraform/issues/4823))
* provider/openstack: Handle volumes in "deleting" state ([#4204](https://github.com/hashicorp/terraform/issues/4204))
* provider/rundeck: Tolerate Rundeck server not returning project name when reading a job ([#4301](https://github.com/hashicorp/terraform/issues/4301))
* provider/vsphere: Create and attach additional disks before bootup ([#4196](https://github.com/hashicorp/terraform/issues/4196))
* provider/openstack: Convert block_device from a Set to a List ([#4288](https://github.com/hashicorp/terraform/issues/4288))
* provider/google: Terraform identifies deleted resources and handles them appropriately on Read ([#3913](https://github.com/hashicorp/terraform/issues/3913))
* provider/cloudstack: Reduce the number of network calls required for common operations ([#4051](https://github.com/hashicorp/terraform/issues/4051))
* provider/aws: Make `publically_accessible` on an `aws_db_instance` update existing instances instead of forcing new ones ([#3895](https://github.com/hashicorp/terraform/issues/3895))
* provider/aws: Allow `block_duration_minutes` to be set for spot instance requests ([#4071](https://github.com/hashicorp/terraform/issues/4071))
* provider/aws: Make setting `acl` on S3 buckets update existing buckets instead of forcing new ones ([#4080](https://github.com/hashicorp/terraform/issues/4080))
* provider/aws: Make updates to `assume_role_policy` modify existing IAM roles instead of forcing new ones ([#4107](https://github.com/hashicorp/terraform/issues/4107))
* core: Fix a bug which prevented HEREDOC syntax being used in lists ([#4078](https://github.com/hashicorp/terraform/issues/4078))
* core: Fix a bug which prevented HEREDOC syntax where the anchor ends in a number ([#4128](https://github.com/hashicorp/terraform/issues/4128))
* core: Fix a bug which prevented HEREDOC syntax being used with Windows line endings ([#4069](https://github.com/hashicorp/terraform/issues/4069))
* provider/aws: Fix a bug which could result in a panic when reading EC2 metadata ([#4024](https://github.com/hashicorp/terraform/issues/4024))
* provider/aws: Fix issue recreating security group rule if it has been destroyed ([#4050](https://github.com/hashicorp/terraform/issues/4050))
* provider/aws: Fix issue with some attributes in Spot Instance Requests returning as nil ([#4132](https://github.com/hashicorp/terraform/issues/4132))
* provider/aws: Fix issue where SPF records in Route 53 could show differences with no modification to the configuration ([#4108](https://github.com/hashicorp/terraform/issues/4108))
* provisioner/chef: Fix issue with path separators breaking the Chef provisioner on Windows ([#4041](https://github.com/hashicorp/terraform/issues/4041))
* **New provider: `tls`** - A utility provider for generating TLS keys/self-signed certificates for development and testing ([#2778](https://github.com/hashicorp/terraform/issues/2778))
* core: Improve message to list only resources which will be destroyed when using `--target` ([#3859](https://github.com/hashicorp/terraform/issues/3859))
* connection/ssh: Accept `private_key` contents instead of paths ([#3846](https://github.com/hashicorp/terraform/issues/3846))
* provider/google: `preemptible` option for instance_template ([#3667](https://github.com/hashicorp/terraform/issues/3667))
* provider/google: Accurate Terraform Version ([#3554](https://github.com/hashicorp/terraform/issues/3554))
* provider/aws: Add CORS settings to S3 bucket ([#3387](https://github.com/hashicorp/terraform/issues/3387))
* provider/aws: Add notification topic ARN for ElastiCache clusters ([#3674](https://github.com/hashicorp/terraform/issues/3674))
* provider/aws: Add `kinesis_endpoint` for configuring Kinesis ([#3255](https://github.com/hashicorp/terraform/issues/3255))
* provider/aws: Add a computed ARN for S3 Buckets ([#3685](https://github.com/hashicorp/terraform/issues/3685))
* provider/aws: Add S3 support for Lambda Function resource ([#3794](https://github.com/hashicorp/terraform/issues/3794))
* provider/aws: Add `name_prefix` option to launch configurations ([#3802](https://github.com/hashicorp/terraform/issues/3802))
* provider/aws: Add support for group name and path changes with IAM group update function ([#3237](https://github.com/hashicorp/terraform/issues/3237))
* provider/aws: Provide `source_security_group_id` for ELBs inside a VPC ([#3780](https://github.com/hashicorp/terraform/issues/3780))
* provider/aws: Add snapshot window and retention limits for ElastiCache (Redis) ([#3707](https://github.com/hashicorp/terraform/issues/3707))
* provider/aws: Add username updates for `aws_iam_user` ([#3227](https://github.com/hashicorp/terraform/issues/3227))
* provider/aws: Add AutoMinorVersionUpgrade to RDS Instances ([#3677](https://github.com/hashicorp/terraform/issues/3677))
* provider/aws: Add `access_logs` to ELB resource ([#3756](https://github.com/hashicorp/terraform/issues/3756))
* provider/aws: Add a retry function to rescue an error in creating Autoscaling Lifecycle Hooks ([#3694](https://github.com/hashicorp/terraform/issues/3694))
* provider/aws: `engine_version` is now optional for DB Instance ([#3744](https://github.com/hashicorp/terraform/issues/3744))
* provider/aws: Add configuration to enable copying RDS tags to final snapshot ([#3529](https://github.com/hashicorp/terraform/issues/3529))
This will introduce plans on upgrade to this version, in order to correct the ordering ([#2890](https://github.com/hashicorp/terraform/issues/2890))
* provider/aws: Allow cluster name, not only ARN for `aws_ecs_service` ([#3668](https://github.com/hashicorp/terraform/issues/3668))
* provider/aws: Fix a bug where a non-lower-cased `maintenance_window` can cause unnecessary planned changes ([#4020](https://github.com/hashicorp/terraform/issues/4020))
* provider/aws: Only set `weight` on an `aws_route53_record` if it has been set in configuration ([#3900](https://github.com/hashicorp/terraform/issues/3900))
* provider/aws: Ignore association not existing on route table destroy ([#3615](https://github.com/hashicorp/terraform/issues/3615))
* provider/aws: Fix policy encoding issue with SNS Topics ([#3700](https://github.com/hashicorp/terraform/issues/3700))
* provider/aws: Correctly export ARN in `aws_iam_saml_provider` ([#3827](https://github.com/hashicorp/terraform/issues/3827))
* provider/aws: Fix issue deleting users who are attached to a group ([#4005](https://github.com/hashicorp/terraform/issues/4005))
* provider/aws: Fix crash in Route53 Record if Zone not found ([#3945](https://github.com/hashicorp/terraform/issues/3945))
* provider/aws: Retry deleting IAM Server Cert on dependency violation ([#3898](https://github.com/hashicorp/terraform/issues/3898))
* provider/aws: Update Spot Instance request to provide connection information ([#3940](https://github.com/hashicorp/terraform/issues/3940))
* provider/aws: Fix typo in error checking for IAM Policy Attachments ([#3970](https://github.com/hashicorp/terraform/issues/3970))
* provider/aws: Fix issue with LB Cookie Stickiness and empty expiration period ([#3908](https://github.com/hashicorp/terraform/issues/3908))
* provider/aws: Tolerate ElastiCache clusters being deleted outside Terraform ([#3767](https://github.com/hashicorp/terraform/issues/3767))
* provider/aws: Downcase Route 53 record names in state file to match API output ([#3574](https://github.com/hashicorp/terraform/issues/3574))
* provider/aws: Fix issue that could occur if no ECS Cluster was found for a given name ([#3829](https://github.com/hashicorp/terraform/issues/3829))
* provider/aws: Fix issue with SNS topic policy if omitted ([#3777](https://github.com/hashicorp/terraform/issues/3777))
* provider/aws: Support scratch volumes in `aws_ecs_task_definition` ([#3810](https://github.com/hashicorp/terraform/issues/3810))
* provider/aws: Treat `aws_ecs_service` w/ Status==INACTIVE as deleted ([#3828](https://github.com/hashicorp/terraform/issues/3828))
* provider/aws: Expand ~ to homedir in `aws_s3_bucket_object.source` ([#3910](https://github.com/hashicorp/terraform/issues/3910))
* provider/aws: Fix issue with updating the `aws_ecs_task_definition` where `aws_ecs_service` didn't wait for a new computed ARN ([#3924](https://github.com/hashicorp/terraform/issues/3924))
* provider/aws: Prevent crashing when deleting `aws_ecs_service` that is already gone ([#3914](https://github.com/hashicorp/terraform/issues/3914))
* provider/aws: Allow spaces in `aws_db_subnet_group.name` (undocumented in the API) ([#3955](https://github.com/hashicorp/terraform/issues/3955))
* provider/aws: Make VPC ID required on subnets ([#4021](https://github.com/hashicorp/terraform/issues/4021))
* provider/azure: Various bug fixes ([#3695](https://github.com/hashicorp/terraform/issues/3695))
* provider/digitalocean: Fix issue preventing SSH fingerprints from working ([#3633](https://github.com/hashicorp/terraform/issues/3633))
* provider/digitalocean: Fix the DigitalOcean Droplet 404 potential on refresh of state ([#3768](https://github.com/hashicorp/terraform/issues/3768))
* provider/openstack: Fix several issues causing unresolvable diffs ([#3440](https://github.com/hashicorp/terraform/issues/3440))
* provider/openstack: Safely delete security groups ([#3696](https://github.com/hashicorp/terraform/issues/3696))
* provider/openstack: Ignore order of `security_groups` in instance ([#3651](https://github.com/hashicorp/terraform/issues/3651))
* provider/vsphere: Fix d.SetConnInfo error in case of a missing IP address ([#3636](https://github.com/hashicorp/terraform/issues/3636))
* provider/openstack: Fix boot from volume ([#3206](https://github.com/hashicorp/terraform/issues/3206))
* provider/openstack: Fix crashing when image is no longer accessible ([#2189](https://github.com/hashicorp/terraform/issues/2189))
* provider/openstack: Better handling of network resource state changes ([#3712](https://github.com/hashicorp/terraform/issues/3712))
* provider/openstack: Fix crashing when no security group is specified ([#3801](https://github.com/hashicorp/terraform/issues/3801))
* provider/packet: Fix issue that could cause errors when provisioning many devices at once ([#3847](https://github.com/hashicorp/terraform/issues/3847))
* provider/packet: Fix connection information for devices, allowing provisioners to run ([#3948](https://github.com/hashicorp/terraform/issues/3948))
* provider/openstack: Fix issue preventing security group rules from being removed ([#3796](https://github.com/hashicorp/terraform/issues/3796))
* provider/template: `template_file`: source contents instead of path ([#3909](https://github.com/hashicorp/terraform/issues/3909))
* helper/schema: Better error message for assigning list/map to string ([#3009](https://github.com/hashicorp/terraform/issues/3009))
* remote/state/atlas: Additional remote state conflict handling for semantically neutral state changes ([#3603](https://github.com/hashicorp/terraform/issues/3603))
* core: Fix remote state conflicts caused by ambiguity in ordering of deeply nested modules ([#3573](https://github.com/hashicorp/terraform/issues/3573))
* core: Fix remote state conflicts caused by state metadata differences ([#3569](https://github.com/hashicorp/terraform/issues/3569))
* core: Avoid using http.DefaultClient ([#3532](https://github.com/hashicorp/terraform/issues/3532))
* core: Add a function to find the index of an element in a list. ([#2704](https://github.com/hashicorp/terraform/issues/2704))
* core: Print all outputs when `terraform output` is called with no arguments ([#2920](https://github.com/hashicorp/terraform/issues/2920))
* core: In plan output summary, count resource replacement as Add/Remove instead of Change ([#3173](https://github.com/hashicorp/terraform/issues/3173))
* core: Add interpolation functions for base64 encoding and decoding. ([#3325](https://github.com/hashicorp/terraform/issues/3325))
* core: Expose parallelism as a CLI option instead of a hard-coding the default of 10 ([#3365](https://github.com/hashicorp/terraform/issues/3365))
* core: Add interpolation function `compact`, to remove empty elements from a list. ([#3239](https://github.com/hashicorp/terraform/issues/3239)), ([#3479](https://github.com/hashicorp/terraform/issues/3479))
* core: Allow filtering of log output by level, using e.g. ``TF_LOG=INFO`` ([#3380](https://github.com/hashicorp/terraform/issues/3380))
* provider/aws: Add `instance_initiated_shutdown_behavior` to AWS Instance ([#2887](https://github.com/hashicorp/terraform/issues/2887))
* provider/aws: Support IAM role names (previously just ARNs) in `aws_ecs_service.iam_role` ([#3061](https://github.com/hashicorp/terraform/issues/3061))
* provider/aws: Add update method to RDS Subnet groups, can modify subnets without recreating ([#3053](https://github.com/hashicorp/terraform/issues/3053))
* provider/aws: Paginate notifications returned for ASG Notifications ([#3043](https://github.com/hashicorp/terraform/issues/3043))
* provider/aws: Add validation for `app_cookie_stickiness_policy.name` ([#3277](https://github.com/hashicorp/terraform/issues/3277))
* provider/aws: Add validation for `db_parameter_group.name` ([#3279](https://github.com/hashicorp/terraform/issues/3279))
* provider/aws: Set DynamoDB Table ARN after creation ([#3500](https://github.com/hashicorp/terraform/issues/3500))
* provider/aws: `aws_s3_bucket_object` allows interpolated content to be set with new `content` attribute. ([#3200](https://github.com/hashicorp/terraform/issues/3200))
* provider/aws: Allow tags for `aws_kinesis_stream` resource. ([#3397](https://github.com/hashicorp/terraform/issues/3397))
* provider/aws: Configurable capacity waiting duration for ASGs ([#3191](https://github.com/hashicorp/terraform/issues/3191))
* core: Fix problems referencing list attributes in interpolations ([#2157](https://github.com/hashicorp/terraform/issues/2157))
* core: don't error on computed value during input walk ([#2988](https://github.com/hashicorp/terraform/issues/2988))
* core: Ignore missing variables during destroy phase ([#3393](https://github.com/hashicorp/terraform/issues/3393))
* provider/google: Crashes with interface conversion in GCE Instance Template ([#3027](https://github.com/hashicorp/terraform/issues/3027))
* provider/google: Convert int to int64 when building the GKE cluster.NodeConfig struct ([#2978](https://github.com/hashicorp/terraform/issues/2978))
* provider/google: google_compute_instance_template.network_interface.network should be a URL ([#3226](https://github.com/hashicorp/terraform/issues/3226))
* provider/aws: Retry creation of `aws_ecs_service` if IAM policy isn't ready yet ([#3061](https://github.com/hashicorp/terraform/issues/3061))
* provider/aws: Fix issue with mixed capitalization for RDS Instances ([#3053](https://github.com/hashicorp/terraform/issues/3053))
* provider/aws: Fix issue with RDS to allow major version upgrades ([#3053](https://github.com/hashicorp/terraform/issues/3053))
* provider/aws: Fix shard_count in `aws_kinesis_stream` ([#2986](https://github.com/hashicorp/terraform/issues/2986))
* provider/aws: Fix issue with `key_name` and using VPCs with spot instance requests ([#2954](https://github.com/hashicorp/terraform/issues/2954))
by AWS ([#3120](https://github.com/hashicorp/terraform/issues/3120))
* provider/aws: Read instance source_dest_check and save to state ([#3152](https://github.com/hashicorp/terraform/issues/3152))
* provider/aws: Allow `weight = 0` in Route53 records ([#3196](https://github.com/hashicorp/terraform/issues/3196))
* provider/aws: Normalize aws_elasticache_cluster id to lowercase, allowing convergence. ([#3235](https://github.com/hashicorp/terraform/issues/3235))
* provider/aws: Fix ValidateAccountId for IAM Instance Profiles ([#3313](https://github.com/hashicorp/terraform/issues/3313))
* provider/aws: Update Security Group Rules to Version 2 ([#3019](https://github.com/hashicorp/terraform/issues/3019))
* provider/aws: Migrate KeyPair to version 1, fixing issue with using `file()` ([#3470](https://github.com/hashicorp/terraform/issues/3470))
* provider/aws: Fix force_delete on autoscaling groups ([#3485](https://github.com/hashicorp/terraform/issues/3485))
* provider/aws: Fix crash with VPC Peering connections ([#3490](https://github.com/hashicorp/terraform/issues/3490))
* provider/aws: fix bug with reading GSIs from dynamodb ([#3300](https://github.com/hashicorp/terraform/issues/3300))
* provider/docker: Fix issue preventing private images from being referenced ([#2619](https://github.com/hashicorp/terraform/issues/2619))
* provider/digitalocean: Fix issue causing unnecessary diffs based on droplet slugsize case ([#3284](https://github.com/hashicorp/terraform/issues/3284))
* core: Makefile target "plugin-dev" for building just one plugin. ([#3229](https://github.com/hashicorp/terraform/issues/3229))
* helper/schema: Don't allow ``Update`` func if no attributes can actually be updated, per schema. ([#3288](https://github.com/hashicorp/terraform/issues/3288))
* helper/schema: Default hashing function for sets ([#3018](https://github.com/hashicorp/terraform/issues/3018))
* helper/multierror: Remove in favor of [github.com/hashicorp/go-multierror](http://github.com/hashicorp/go-multierror). ([#3336](https://github.com/hashicorp/terraform/issues/3336))