terraform/CHANGELOG.md

0.6.2 (Unreleased)

IMPROVEMENTS:

• provider/aws: Validate credentials before walking the graph [GH-2730]

BUG FIXES:

• provider/aws: Fix issue with toggling monitoring in AWS Instances [GH-2794]
• provider/aws: Fix issue with Spot Instance Requests and cancellation [GH-2805]

0.6.1 (July 20, 2015)

FEATURES:

• New resource: google_container_cluster [GH-2357]
• New resource: aws_vpc_endpoint [GH-2695]

IMPROVEMENTS:

• connection/ssh: Print SSH bastion host details to output [GH-2684]
• provider/aws: Create RDS databases from snapshots [GH-2062]
• provider/aws: Add support for restoring from Redis backup stored in S3 [GH-2634]
• provider/aws: Add maintenance_window to ElastiCache cluster [GH-2642]
• provider/aws: Availability Zones are optional when specifying VPC Zone Identifiers in Auto Scaling Groups updates [GH-2724]
• provider/google: Add metadata_startup_script to google_compute_instance [GH-2375]

BUG FIXES:

• core: don't prompt for variables with defaults [GH-2613]
• core: Return correct number of planned updates [GH-2620]
• core: Fix "provider not found" error that can occur while running a destroy plan with grandchildren modules [GH-2755]
• core: Fix UUID showing up in diff for computed splat (foo.*.bar) variables. [GH-2788]
• core: Orphan modules that contain no resources (only other modules) are properly destroyed up to arbitrary depth [GH-2786]
• core: Fix "attribute not available" during destroy plans in cases where the parameter is passed between modules [GH-2775]
• connection/ssh: fix issue on machines with an SSH Agent available preventing key_file from being read without explicitly setting agent = false [GH-2615]
• provider/aws: Allow uppercase characters in aws_elb.name [GH-2580]
• provider/aws: Allow underscores in aws_db_subnet_group.name (undocumented by AWS) [GH-2604]
• provider/aws: Allow dots in aws_db_subnet_group.name (undocumented by AWS) [GH-2665]
• provider/aws: Fix issue with pending Spot Instance requests [GH-2640]
• provider/aws: Fix issue in AWS Classic environment with referencing external Security Groups [GH-2644]
• provider/aws: Bump internet gateway detach timeout [GH-2669]
• provider/aws: Fix issue with detecting differences in DB Parameters [GH-2728]
• provider/aws: ecs_cluster rename (recreation) and deletion is handled correctly [GH-2698]
• provider/aws: aws_route_table ignores routes generated for VPC endpoints [GH-2695]
• provider/aws: Fix issue with Launch Configurations and enable_monitoring [GH-2735]
• provider/openstack: allow empty api_key and endpoint_type [GH-2626]
• provisioner/chef: Fix permission denied error with ohai hints [GH-2781]

0.6.0 (June 30, 2015)

BACKWARDS INCOMPATIBILITIES:

• command/push: If a variable is already set within Atlas, it won't be updated unless the -overwrite flag is present [GH-2373]
• connection/ssh: The agent field now defaults to true if the SSH_AGENT_SOCK environment variable is present. In other words, ssh-agent support is now opt-out instead of opt-in functionality. [GH-2408]
• provider/aws: If you were setting access and secret key to blank ("") to force Terraform to load credentials from another source such as the EC2 role, this will now error. Remove the blank lines and Terraform will load from other sources.
• concat() has been repurposed to combine lists instead of strings (old behavior of joining strings is maintained in this version but is deprecated, strings should be combined using interpolation syntax, like "${var.foo}{var.bar}") [GH-1790]

FEATURES:

• New provider: azure [GH-2052, GH-2053, GH-2372, GH-2380, GH-2394, GH-2515, GH-2530, GH-2562]
• New resource: aws_autoscaling_notification [GH-2197]
• New resource: aws_autoscaling_policy [GH-2201]
• New resource: aws_cloudwatch_metric_alarm [GH-2201]
• New resource: aws_dynamodb_table [GH-2121]
• New resource: aws_ecs_cluster [GH-1803]
• New resource: aws_ecs_service [GH-1803]
• New resource: aws_ecs_task_definition [GH-1803, GH-2402]
• New resource: aws_elasticache_parameter_group [GH-2276]
• New resource: aws_flow_log [GH-2384]
• New resource: aws_iam_group_association [GH-2273]
• New resource: aws_iam_policy_attachment [GH-2395]
• New resource: aws_lambda_function [GH-2170]
• New resource: aws_route53_delegation_set [GH-1999]
• New resource: aws_route53_health_check [GH-2226]
• New resource: aws_spot_instance_request [GH-2263]
• New resource: cloudstack_ssh_keypair [GH-2004]
• New remote state backend: swift: You can now store remote state in a OpenStack Swift. [GH-2254]
• command/output: support display of module outputs [GH-2102]
• core: keys() and values() funcs for map variables [GH-2198]
• connection/ssh: SSH bastion host support and ssh-agent forwarding [GH-2425]

IMPROVEMENTS:

• core: HTTP remote state now accepts skip_cert_verification option to ignore TLS cert verification. [GH-2214]
• core: S3 remote state now accepts the 'encrypt' option for SSE [GH-2405]
• core: plan now reports sum of resources to be changed/created/destroyed [GH-2458]
• core: Change string list representation so we can distinguish empty, single element lists [GH-2504]
• core: Properly close provider and provisioner plugin connections [GH-2406, GH-2527]
• provider/aws: AutoScaling groups now support updating Load Balancers without recreation [GH-2472]
• provider/aws: Allow more in-place updates for ElastiCache cluster without recreating [GH-2469]
• provider/aws: ElastiCache Subnet Groups can be updated without destroying first [GH-2191]
• provider/aws: Normalize certificate_chain in aws_iam_server_certificate to prevent unnecessary replacement. [GH-2411]
• provider/aws: aws_instance supports `monitoring' [GH-2489]
• provider/aws: aws_launch_configuration now supports enable_monitoring [GH-2410]
• provider/aws: Show outputs after terraform refresh [GH-2347]
• provider/aws: Add backoff/throttling during DynamoDB creation [GH-2462]
• provider/aws: Add validation for aws_vpc.cidr_block [GH-2514]
• provider/aws: Add validation for aws_db_subnet_group.name [GH-2513]
• provider/aws: Add validation for aws_db_instance.identifier [GH-2516]
• provider/aws: Add validation for aws_elb.name [GH-2517]
• provider/aws: Add validation for aws_security_group (name+description) [GH-2518]
• provider/aws: Add validation for aws_launch_configuration [GH-2519]
• provider/aws: Add validation for aws_autoscaling_group.name [GH-2520]
• provider/aws: Add validation for aws_iam_role.name [GH-2521]
• provider/aws: Add validation for aws_iam_role_policy.name [GH-2552]
• provider/aws: Add validation for aws_iam_instance_profile.name [GH-2553]
• provider/aws: aws_auto_scaling_group.default_cooldown no longer requires resource replacement [GH-2510]
• provider/aws: add AH and ESP protocol integers [GH-2321]
• provider/docker: docker_container has the privileged option. [GH-2227]
• provider/openstack: allow OS_AUTH_TOKEN environment variable to set the openstack api_key field [GH-2234]
• provider/openstack: Can now configure endpoint type (public, admin, internal) [GH-2262]
• provider/cloudstack: cloudstack_instance now supports projects [GH-2115]
• provisioner/chef: Added a os_type to specifically specify the target OS [GH-2483]
• provisioner/chef: Added a ohai_hints option to upload hint files [GH-2487]

BUG FIXES:

• core: lifecycle prevent_destroy can be any value that can be coerced into a bool [GH-2268]
• core: matching provider types in sibling modules won't override each other's config. [GH-2464]
• core: computed provider configurations now properly validate [GH-2457]
• core: orphan (commented out) resource dependencies are destroyed in the correct order [GH-2453]
• core: validate object types in plugins are actually objects [GH-2450]
• core: fix -no-color flag in subcommands [GH-2414]
• core: Fix error of 'attribute not found for variable' when a computed resource attribute is used as a parameter to a module [GH-2477]
• core: moduled orphans will properly inherit provider configs [GH-2476]
• core: modules with provider aliases work properly if the parent doesn't implement those aliases [GH-2475]
• core: unknown resource attributes passed in as parameters to modules now error [GH-2478]
• core: better error messages for missing variables [GH-2479]
• core: removed set items now properly appear in diffs and applies [GH-2507]
• core: '*' will not be added as part of the variable name when you attempt multiplication without a space [GH-2505]
• core: fix target dependency calculation across module boundaries [GH-2555]
• command/*: fixed bug where variable input was not asked for unset vars if terraform.tfvars existed [GH-2502]
• command/apply: prevent output duplication when reporting errors [GH-2267]
• command/apply: destroyed orphan resources are properly counted [GH-2506]
• provider/aws: loading credentials from the environment (vars, EC2 role, etc.) is more robust and will not ask for credentials from stdin [GH-1841]
• provider/aws: fix panic when route has no cidr_block [GH-2215]
• provider/aws: fix issue preventing destruction of IAM Roles [GH-2177]
• provider/aws: fix issue where Security Group Rules could collide and fail to save to the state file correctly [GH-2376]
• provider/aws: fix issue preventing destruction self referencing Securtity Group Rules [GH-2305]
• provider/aws: fix issue causing perpetual diff on ELB listeners when non-lowercase protocol strings were used [GH-2246]
• provider/aws: corrected frankfurt S3 website region [GH-2259]
• provider/aws: aws_elasticache_cluster port is required [GH-2160]
• provider/aws: Handle AMIs where RootBlockDevice does not appear in the BlockDeviceMapping, preventing root_block_device from working [GH-2271]
• provider/aws: fix terraform show with remote state [GH-2371]
• provider/aws: detect instance_type drift on aws_instance [GH-2374]
• provider/aws: fix crash when security_group_rule referenced non-existent security group [GH-2434]
• provider/aws: aws_launch_configuration retries if IAM instance profile is not ready yet. [GH-2452]
• provider/aws: fqdn is populated during creation for aws_route53_record [GH-2528]
• provider/aws: retry VPC delete on DependencyViolation due to eventual consistency [GH-2532]
• provider/aws: VPC peering connections in "failed" state are deleted [GH-2544]
• provider/aws: EIP deletion works if it was manually disassociated [GH-2543]
• provider/aws: elasticache_subnet_group.subnet_ids is now a required argument [GH-2534]
• provider/aws: handle nil response from VPN connection describes [GH-2533]
• provider/cloudflare: manual record deletion doesn't cause error [GH-2545]
• provider/digitalocean: handle case where droplet is deleted outside of terraform [GH-2497]
• provider/dme: No longer an error if record deleted manually [GH-2546]
• provider/docker: Fix issues when using containers with links [GH-2327]
• provider/openstack: fix panic case if API returns nil network [GH-2448]
• provider/template: fix issue causing "unknown variable" rendering errors when an existing set of template variables is changed [GH-2386]
• provisioner/chef: improve the decoding logic to prevent parameter not found errors [GH-2206]

0.5.3 (June 1, 2015)

IMPROVEMENTS:

• New resource: aws_kinesis_stream [GH-2110]
• New resource: aws_iam_server_certificate [GH-2086]
• New resource: aws_sqs_queue [GH-1939]
• New resource: aws_sns_topic [GH-1974]
• New resource: aws_sns_topic_subscription [GH-1974]
• New resource: aws_volume_attachment [GH-2050]
• New resource: google_storage_bucket [GH-2060]
• provider/aws: support ec2 termination protection [GH-1988]
• provider/aws: support for RDS Read Replicas [GH-1946]
• provider/aws: aws_s3_bucket add support for policy [GH-1992]
• provider/aws: aws_ebs_volume add support for tags [GH-2135]
• provider/aws: aws_elasticache_cluster Confirm node status before reporting available
• provider/aws: aws_network_acl Add support for ICMP Protocol [GH-2148]
• provider/aws: New force_destroy parameter for S3 buckets, to destroy Buckets that contain objects [GH-2007]
• provider/aws: switching health_check_type on ASGs no longer requires resource refresh [GH-2147]
• provider/aws: ignore empty vpc_security_group_ids on aws_instance [GH-2311]

BUG FIXES:

• provider/aws: Correctly handle AWS keypairs which no longer exist [GH-2032]
• provider/aws: Fix issue with restoring an Instance from snapshot ID [GH-2120]
• provider/template: store relative path in the state [GH-2038]
• provisioner/chef: fix interpolation in the Chef provisioner [GH-2168]
• provisioner/remote-exec: Don't prepend shebang on scripts that already have one [GH-2041]

0.5.2 (May 15, 2015)

FEATURES:

• Chef provisioning: You can now provision new hosts (both Linux and Windows) with Chef using a native provisioner [GH-1868]

IMPROVEMENTS:

• New config function: formatlist - Format lists in a similar way to format. Useful for creating URLs from a list of IPs. [GH-1829]
• New resource: aws_route53_zone_association
• provider/aws: aws_autoscaling_group can wait for capacity in ELB via min_elb_capacity [GH-1970]
• provider/aws: aws_db_instances supports license_model [GH-1966]
• provider/aws: aws_elasticache_cluster add support for Tags [GH-1965]
• provider/aws: aws_network_acl Network ACLs can be applied to multiple subnets [GH-1931]
• provider/aws: aws_s3_bucket exports hosted_zone_id and region [GH-1865]
• provider/aws: aws_s3_bucket add support for website redirect_all_requests_to [GH-1909]
• provider/aws: aws_route53_record exports fqdn [GH-1847]
• provider/aws: aws_route53_zone can create private hosted zones [GH-1526]
• provider/google: google_compute_instance scratch attribute added [GH-1920]

BUG FIXES:

• core: fix "resource not found" for interpolation issues with modules
• core: fix unflattenable error for orphans [GH-1922]
• core: fix deadlock with create-before-destroy + modules [GH-1949]
• core: fix "no roots found" error with create-before-destroy [GH-1953]
• core: variables set with environment variables won't validate as not set without a default [GH-1930]
• core: resources with a blank ID in the state are now assumed to not exist [GH-1905]
• command/push: local vars override remote ones [GH-1881]
• provider/aws: Mark aws_security_group description as ForceNew [GH-1871]
• provider/aws: aws_db_instance ARN value is correct [GH-1910]
• provider/aws: aws_db_instance only submit modify request if there is a change. [GH-1906]
• provider/aws: aws_elasticache_cluster export missing information on cluster nodes [GH-1965]
• provider/aws: bad AMI on a launch configuration won't block refresh [GH-1901]
• provider/aws: aws_security_group + aws_subnet - destroy timeout increased to prevent DependencyViolation errors. [GH-1886]
• provider/google: google_compute_instance Local SSDs no-longer cause crash [GH-1088]
• provider/google: google_http_health_check Defaults now driven from Terraform, avoids errors on update [GH-1894]
• provider/google: google_compute_template Update Instance Template network definition to match changes to Instance [GH-980]
• provider/template: Fix infinite diff [GH-1898]

0.5.1 (never released)

This version was never released since we accidentally skipped it!

0.5.0 (May 7, 2015)

BACKWARDS INCOMPATIBILITIES:

• provider/aws: Terraform now remove the default egress rule created by AWS in a new security group.

FEATURES:

• Multi-provider (a.k.a multi-region): Multiple instances of a single provider can be configured so resources can apply to different settings. As an example, this allows Terraform to manage multiple regions with AWS.
• Environmental variables to set variables: Environment variables can be used to set variables. The environment variables must be in the format TF_VAR_name and this will be checked last for a value.
• New remote state backend: s3: You can now store remote state in an S3 bucket. [GH-1723]
• Automatic AWS retries: This release includes a lot of improvement around automatic retries of transient errors in AWS. The number of retry attempts is also configurable.
• Templates: A new template_file resource allows long strings needing variable interpolation to be moved into files. [GH-1778]
• Provision with WinRM: Provisioners can now run remote commands on Windows hosts. [GH-1483]

IMPROVEMENTS:

• New config function: length - Get the length of a string or a list. Useful in conjunction with split. [GH-1495]
• New resource: aws_app_cookie_stickiness_policy
• New resource: aws_customer_gateway
• New resource: aws_ebs_volume
• New resource: aws_elasticache_cluster
• New resource: aws_elasticache_security_group
• New resource: aws_elasticache_subnet_group
• New resource: aws_iam_access_key
• New resource: aws_iam_group_policy
• New resource: aws_iam_group
• New resource: aws_iam_instance_profile
• New resource: aws_iam_policy
• New resource: aws_iam_role_policy
• New resource: aws_iam_role
• New resource: aws_iam_user_policy
• New resource: aws_iam_user
• New resource: aws_lb_cookie_stickiness_policy
• New resource: aws_proxy_protocol_policy
• New resource: aws_security_group_rule
• New resource: aws_vpc_dhcp_options_association
• New resource: aws_vpc_dhcp_options
• New resource: aws_vpn_connection_route
• New resource: google_dns_managed_zone
• New resource: google_dns_record_set
• Migrate to upstream AWS SDK: Migrate the AWS provider to awslabs/aws-sdk-go, the official awslabs library. Previously we had forked the library for stability while awslabs refactored. Now that work has completed, and we've migrated back to the upstream version.
• core: Improve error message on diff mismatch [GH-1501]
• provisioner/file: expand ~ in source path [GH-1569]
• provider/aws: Better retry logic, now retries up to 11 times by default with exponentional backoff. This number is configurable. [GH-1787]
• provider/aws: Improved credential detection [GH-1470]
• provider/aws: Can specify a token via the config file [GH-1601]
• provider/aws: Added new vpc_security_group_ids attribute for AWS Instances. If using a VPC, you can now modify the security groups for that Instance without destroying it [GH-1539]
• provider/aws: White or blacklist account IDs that can be used to protect against accidents. [GH-1595]
• provider/aws: Add a subset of IAM resources [GH-939]
• provider/aws: aws_autoscaling_group retries deletes through "in progress" errors [GH-1840]
• provider/aws: aws_autoscaling_group waits for healthy capacity during ASG creation [GH-1839]
• provider/aws: aws_instance supports placement groups [GH-1358]
• provider/aws: aws_eip supports network interface attachment [GH-1681]
• provider/aws: aws_elb supports in-place changing of listeners [GH-1619]
• provider/aws: aws_elb supports connection draining settings [GH-1502]
• provider/aws: aws_elb increase default idle timeout to 60s [GH-1646]
• provider/aws: aws_key_pair name can be omitted and generated [GH-1751]
• provider/aws: aws_network_acl improved validation for network ACL ports and protocols [GH-1798] [GH-1808]
• provider/aws: aws_route_table can target network interfaces [GH-968]
• provider/aws: aws_route_table can specify propagating VGWs [GH-1516]
• provider/aws: aws_route53_record supports weighted sets [GH-1578]
• provider/aws: aws_route53_zone exports nameservers [GH-1525]
• provider/aws: aws_s3_bucket website support [GH-1738]
• provider/aws: aws_security_group name becomes optional and can be automatically set to a unique identifier; this helps with create_before_destroy scenarios [GH-1632]
• provider/aws: aws_security_group description becomes optional with a static default value [GH-1632]
• provider/aws: automatically set the private IP as the SSH address if not specified and no public IP is available [GH-1623]
• provider/aws: aws_elb exports source_security_group field [GH-1708]
• provider/aws: aws_route53_record supports alias targeting [GH-1775]
• provider/aws: Remove default AWS egress rule for newly created Security Groups [GH-1765]
• provider/consul: add scheme configuration argument [GH-1838]
• provider/docker: docker_container can specify links [GH-1564]
• provider/google: resource_compute_disk supports snapshots [GH-1426]
• provider/google: resource_compute_instance supports specifying the device name [GH-1426]
• provider/openstack: Floating IP support for LBaaS [GH-1550]
• provider/openstack: Add AZ to openstack_blockstorage_volume_v1 [GH-1726]

BUG FIXES:

• core: Fix graph cycle issues surrounding modules [GH-1582] [GH-1637]
• core: math on arbitrary variables works if first operand isn't a numeric primitive. [GH-1381]
• core: avoid unnecessary cycles by pruning tainted destroys from graph if there are no tainted resources [GH-1475]
• core: fix issue where destroy nodes weren't pruned in specific edge cases around matching prefixes, which could cause cycles [GH-1527]
• core: fix issue causing diff mismatch errors in certain scenarios during resource replacement [GH-1515]
• core: dependencies on resources with a different index work when count > 1 [GH-1540]
• core: don't panic if variable default type is invalid [GH-1344]
• core: fix perpetual diff issue for computed maps that are empty [GH-1607]
• core: validation added to check for self variables in modules [GH-1609]
• core: fix edge case where validation didn't pick up unknown fields if the value was computed [GH-1507]
• core: Fix issue where values in sets on resources couldn't contain hyphens. [GH-1641]
• core: Outputs removed from the config are removed from the state [GH-1714]
• core: Validate against the worst-case graph during plan phase to catch cycles that would previously only show up during apply [GH-1655]
• core: Referencing invalid module output in module validates [GH-1448]
• command: remote states with uppercase types work [GH-1356]
• provider/aws: Support AWS_SECURITY_TOKEN env var again [GH-1785]
• provider/aws: Don't save "instance" for EIP if association fails [GH-1776]
• provider/aws: launch configuration ID set after create success [GH-1518]
• provider/aws: Fixed an issue with creating ELBs without any tags [GH-1580]
• provider/aws: Fix issue in Security Groups with empty IPRanges [GH-1612]
• provider/aws: manually deleted S3 buckets are refreshed properly [GH-1574]
• provider/aws: only check for EIP allocation ID in VPC [GH-1555]
• provider/aws: raw protocol numbers work in aws_network_acl [GH-1435]
• provider/aws: Block devices can be encrypted [GH-1718]
• provider/aws: ASG health check grace period can be updated in-place [GH-1682]
• provider/aws: ELB security groups can be updated in-place [GH-1662]
• provider/aws: aws_main_route_table_association can be deleted manually [GH-1806]
• provider/docker: image can reference more complex image addresses, such as with private repos with ports [GH-1818]
• provider/openstack: region config is not required [GH-1441]
• provider/openstack: enable_dhcp for networking subnet should be bool [GH-1741]
• provisioner/remote-exec: add random number to uploaded script path so that parallel provisions work [GH-1588]
• provisioner/remote-exec: chmod the script to 0755 properly [GH-1796]

0.4.2 (April 10, 2015)

BUG FIXES:

• core: refresh won't remove outputs from state file [GH-1369]
• core: clarify "unknown variable" error [GH-1480]
• core: properly merge parent provider configs when asking for input
• provider/aws: fix panic possibility if RDS DB name is empty [GH-1460]
• provider/aws: fix issue detecting credentials for some resources [GH-1470]
• provider/google: fix issue causing unresolvable diffs when using legacy network field on google_compute_instance [GH-1458]

0.4.1 (April 9, 2015)

IMPROVEMENTS:

• provider/aws: Route 53 records can now update ttl and records attributes without destroying/creating the record [GH-1396]
• provider/aws: Support changing additional attributes of RDS databases without forcing a new resource [GH-1382]

BUG FIXES:

• core: module paths in ".terraform" are consistent across different systems so copying your ".terraform" folder works. [GH-1418]
• core: don't validate providers too early when nested in a module [GH-1380]
• core: fix race condition in count.index interpolation [GH-1454]
• core: properly initialize provisioners, fixing resource targeting during destroy [GH-1544]
• command/push: don't ask for input if terraform.tfvars is present
• command/remote-config: remove spurrious error "nil" when initializing remote state on a new configuration. [GH-1392]
• provider/aws: Fix issue with Route 53 and pre-existing Hosted Zones [GH-1415]
• provider/aws: Fix refresh issue in Route 53 hosted zone [GH-1384]
• provider/aws: Fix issue when changing map-public-ip in Subnets #1234
• provider/aws: Fix issue finding db subnets [GH-1377]
• provider/aws: Fix issues with *_block_device attributes on instances and launch configs creating unresolvable diffs when certain optional parameters were omitted from the config [GH-1445]
• provider/aws: Fix issue with aws_launch_configuration causing an unnecessary diff for pre-0.4 environments [GH-1371]
• provider/aws: Fix several related issues with aws_launch_configuration causing unresolvable diffs [GH-1444]
• provider/aws: Fix issue preventing launch configurations from being valid in EC2 Classic [GH-1412]
• provider/aws: Fix issue in updating Route 53 records on refresh/read. [GH-1430]
• provider/docker: Don't ask for cert_path input on every run [GH-1432]
• provider/google: Fix issue causing unresolvable diff on instances with network_interface [GH-1427]

0.4.0 (April 2, 2015)

BACKWARDS INCOMPATIBILITIES:

• Commands terraform push and terraform pull are now nested under the remote command: terraform remote push and terraform remote pull. The old remote functionality is now at terraform remote config. This consolidates all remote state management under one command.
• Period-prefixed configuration files are now ignored. This might break existing Terraform configurations if you had period-prefixed files.
• The block_device attribute of aws_instance has been removed in favor of three more specific attributes to specify block device mappings: root_block_device, ebs_block_device, and ephemeral_block_device. Configurations using the old attribute will generate a validation error indicating that they must be updated to use the new fields [GH-1045].

FEATURES:

• New provider: dme (DNSMadeEasy) [GH-855]
• New provider: docker (Docker) - Manage container lifecycle using the standard Docker API. [GH-855]
• New provider: openstack (OpenStack) - Interact with the many resources provided by OpenStack. [GH-924]
• New feature: terraform_remote_state resource - Reference remote states from other Terraform runs to use Terraform outputs as inputs into another Terraform run.
• New command: taint - Manually mark a resource as tainted, causing a destroy and recreate on the next plan/apply.
• New resource: aws_vpn_gateway [GH-1137]
• New resource: aws_elastic_network_interfaces [GH-1149]
• Self-variables can be used to reference the current resource's attributes within a provisioner. Ex. ${self.private_ip_address} [GH-1033]
• Continuous state saving during terraform apply. The state file is continuously updated as apply is running, meaning that the state is less likely to become corrupt in a catastrophic case: terraform panic or system killing Terraform.
• Math operations in interpolations. You can now do things like ${count.index+1}. [GH-1068]
• New AWS SDK: Move to aws-sdk-go (hashicorp/aws-sdk-go), a fork of the official awslabs repo. We forked for stability while awslabs refactored the library, and will move back to the officially supported version in the next release.

IMPROVEMENTS:

• New config function: format - Format a string using sprintf format. [GH-1096]
• New config function: replace - Search and replace string values. Search can be a regular expression. See documentation for more info. [GH-1029]
• New config function: split - Split a value based on a delimiter. This is useful for faking lists as parameters to modules.
• New resource: digitalocean_ssh_key [GH-1074]
• config: Expand ~ with homedir in file() paths [GH-1338]
• core: The serial of the state is only updated if there is an actual change. This will lower the amount of state changing on things like refresh.
• core: Autoload terraform.tfvars.json as well as terraform.tfvars [GH-1030]
• core: .tf files that start with a period are now ignored. [GH-1227]
• command/remote-config: After enabling remote state, a pull is automatically done initially.
• providers/google: Add size option to disk blocks for instances. [GH-1284]
• providers/aws: Improve support for tagging resources.
• providers/aws: Add a short syntax for Route 53 Record names, e.g. www instead of www.example.com.
• providers/aws: Improve dependency violation error handling, when deleting Internet Gateways or Auto Scaling groups [GH-1325].
• provider/aws: Add non-destructive updates to AWS RDS. You can now upgrade engine_version, parameter_group_name, and multi_az without forcing a new database to be created.[GH-1341]
• providers/aws: Full support for block device mappings on instances and launch configurations [GH-1045, GH-1364]
• provisioners/remote-exec: SSH agent support. [GH-1208]

BUG FIXES:

• core: module outputs can be used as inputs to other modules [GH-822]
• core: Self-referencing splat variables are no longer allowed in provisioners. [GH-795][GH-868]
• core: Validate that depends_on doesn't contain interpolations. [GH-1015]
• core: Module inputs can be non-strings. [GH-819]
• core: Fix invalid plan that resulted in "diffs don't match" error when a computed attribute was used as part of a set parameter. [GH-1073]
• core: Fix edge case where state containing both "resource" and "resource.0" would ignore the latter completely. [GH-1086]
• core: Modules with a source of a relative file path moving up directories work properly, i.e. "../a" [GH-1232]
• providers/aws: manually deleted VPC removes it from the state
• providers/aws: source_dest_check regression fixed (now works). [GH-1020]
• providers/aws: Longer wait times for DB instances.
• providers/aws: Longer wait times for route53 records (30 mins). [GH-1164]
• providers/aws: Fix support for TXT records in Route 53. [GH-1213]
• providers/aws: Fix support for wildcard records in Route 53. [GH-1222]
• providers/aws: Fix issue with ignoring the 'self' attribute of a Security Group rule. [GH-1223]
• providers/aws: Fix issue with sql_mode in RDS parameter group always causing an update. [GH-1225]
• providers/aws: Fix dependency violation with subnets and security groups [GH-1252]
• providers/aws: Fix issue with refreshing db_subnet_groups causing an error instead of updating state [GH-1254]
• providers/aws: Prevent empty string to be used as default health_check_type [GH-1052]
• providers/aws: Add tags on AWS IG creation, not just on update [GH-1176]
• providers/digitalocean: Waits until droplet is ready to be destroyed [GH-1057]
• providers/digitalocean: More lenient about 404's while waiting [GH-1062]
• providers/digitalocean: FQDN for domain records in CNAME, MX, NS, etc. Also fixes invalid updates in plans. [GH-863]
• providers/google: Network data in state was not being stored. [GH-1095]
• providers/heroku: Fix panic when config vars block was empty. [GH-1211]

PLUGIN CHANGES:

• New helper/schema fields for resources: Deprecated and Removed allow plugins to generate warning or error messages when a given attribute is used.

0.3.7 (February 19, 2015)

IMPROVEMENTS:

• New resources: google_compute_forwarding_rule, google_compute_http_health_check, and google_compute_target_pool - Together these provide network-level load balancing. [GH-588]
• New resource: aws_main_route_table_association - Manage the main routing table of a VPC. [GH-918]
• New resource: aws_vpc_peering_connection [GH-963]
• core: Formalized the syntax of interpolations and documented it very heavily.
• core: Strings in interpolations can now contain further interpolations, e.g.: foo ${bar("${baz}")}.
• provider/aws: Internet gateway supports tags [GH-720]
• provider/aws: Support the more standard environmental variable names for access key and secret keys. [GH-851]
• provider/aws: The aws_db_instance resource no longer requires both final_snapshot_identifier and skip_final_snapshot; the presence or absence of the former now implies the latter. [GH-874]
• provider/aws: Avoid unnecessary update of aws_subnet when map_public_ip_on_launch is not specified in config. [GH-898]
• provider/aws: Add apply_method to aws_db_parameter_group [GH-897]
• provider/aws: Add storage_type to aws_db_instance [GH-896]
• provider/aws: ELB can update listeners without requiring new. [GH-721]
• provider/aws: Security group support egress rules. [GH-856]
• provider/aws: Route table supports VPC peering connection on route. [GH-963]
• provider/aws: Add root_block_device to aws_db_instance [GH-998]
• provider/google: Remove "client secrets file", as it's no longer necessary for API authentication [GH-884].
• provider/google: Expose self_link on google_compute_instance [GH-906]

BUG FIXES:

• core: Fixing use of remote state with plan files. [GH-741]
• core: Fix a panic case when certain invalid types were used in the configuration. [GH-691]
• core: Escape characters \", \n, and \\ now work in interpolations.
• core: Fix crash that could occur when there are exactly zero providers installed on a system. [GH-786]
• core: JSON TF configurations can configure provisioners. [GH-807]
• core: Sort depends_on in state to prevent unnecessary file changes. [GH-928]
• core: State containing the zero value won't cause a diff with the lack of a value. [GH-952]
• core: If a set type becomes empty, the state will be properly updated to remove it. [GH-952]
• core: Bare "splat" variables are not allowed in provisioners. [GH-636]
• core: Invalid configuration keys to sub-resources are now errors. [GH-740]
• command/apply: Won't try to initialize modules in some cases when no arguments are given. [GH-780]
• command/apply: Fix regression where user variables weren't asked [GH-736]
• helper/hashcode: Update hash.String() to always return a positive index. Fixes issue where specific strings would convert to a negative index and be omitted when creating Route53 records. [GH-967]
• provider/aws: Automatically suffix the Route53 zone name on record names. [GH-312]
• provider/aws: Instance should ignore root EBS devices. [GH-877]
• provider/aws: Fix aws_db_instance to not recreate each time. [GH-874]
• provider/aws: ASG termination policies are synced with remote state. [GH-923]
• provider/aws: ASG launch configuration setting can now be updated in-place. [GH-904]
• provider/aws: No read error when subnet is manually deleted. [GH-889]
• provider/aws: Tags with empty values (empty string) are properly managed. [GH-968]
• provider/aws: Fix case where route table would delete its routes on an unrelated change. [GH-990]
• provider/google: Fix bug preventing instances with metadata from being created [GH-884].

PLUGIN CHANGES:

• New helper/schema type: TypeFloat [GH-594]
• New helper/schema field for resources: Exists must point to a function to check for the existence of a resource. This is used to properly handle the case where the resource was manually deleted. [GH-766]
• There is a semantic change in GetOk where it will return true if there is any value in the diff that is non-zero. Before, it would return true only if there was a value in the diff.

0.3.6 (January 6, 2015)

FEATURES:

• New provider: cloudstack

IMPROVEMENTS:

• New resource: aws_key_pair - Import a public key into AWS. [GH-695]
• New resource: heroku_cert - Manage Heroku app certs.
• provider/aws: Support eu-central-1, cn-north-1, and GovCloud. [GH-525]
• provider/aws: route_table can have tags. [GH-648]
• provider/google: Support Ubuntu images. [GH-724]
• provider/google: Support for service accounts. [GH-725]

BUG FIXES:

• core: temporary/hidden files that look like Terraform configurations are no longer loaded. [GH-548]
• core: Set types in resources now result in deterministic states, resulting in cleaner plans. [GH-663]
• core: fix issue where "diff was not the same" would come up with diffing lists. [GH-661]
• core: fix crash where module inputs weren't strings, and add more validation around invalid types here. [GH-624]
• core: fix error when using a computed module output as an input to another module. [GH-659]
• core: map overrides in "terraform.tfvars" no longer result in a syntax error. [GH-647]
• core: Colon character works in interpolation [GH-700]
• provider/aws: Fix crash case when internet gateway is not attached to any VPC. [GH-664]
• provider/aws: vpc_id is no longer required. [GH-667]
• provider/aws: availability_zones on ELB will contain more than one AZ if it is set as such. [GH-682]
• provider/aws: More fields are marked as "computed" properly, resulting in more accurate diffs for AWS instances. [GH-712]
• provider/aws: Fix panic case by using the wrong type when setting volume size for AWS instances. [GH-712]
• provider/aws: route table ignores routes with 'EnableVgwRoutePropagation' origin since those come from gateways. [GH-722]
• provider/aws: Default network ACL ID and default security group ID support for aws_vpc. [GH-704]
• provider/aws: Tags are not marked as computed. This introduces another issue with not detecting external tags, but this will be fixed in the future. [GH-730]

0.3.5 (December 9, 2014)

FEATURES:

• Remote State: State files can now be stored remotely via HTTP, Consul, or HashiCorp's Atlas.
• New Provider: atlas: Retrieve artifacts for deployment from HashiCorp's Atlas service.
• New element() function to index into arrays

IMPROVEMENTS:

• provider/aws: Support tenancy for aws_instance
• provider/aws: Support block devices for aws_instance
• provider/aws: Support virtual_name on block device
• provider/aws: Improve RDS reliability (more grace time)
• provider/aws: Added aws_db_parameter_group resource
• provider/aws: Added tag support to aws_subnet
• provider/aws: Routes in RouteTable are optional
• provider/aws: associate_public_ip_address on aws_launch_configuration
• provider/aws: Added aws_network_acl
• provider/aws: Ingress rules in security groups are optional
• provider/aws: Support termination policy for ASG
• provider/digitalocean: Improved droplet size compatibility

BUG FIXES:

• core: Fixed issue causing double delete. [GH-555]
• core: Fixed issue with create-before-destroy not being respected in some circumstances.
• core: Fixing issue with count expansion with non-homogenous instance plans.
• core: Fix issue with referencing resource variables from resources that don't exist yet within resources that do exist, or modules.
• core: Fixing depedency handling for modules
• core: Fixing output handling [GH-474]
• core: Fixing count interpolation in modules
• core: Fixing multi-var without module state
• core: Fixing HCL variable declaration
• core: Fixing resource interpolation for without state
• core: Fixing handling of computed maps
• command/init: Fixing recursion issue [GH-518]
• command: Validate config before requesting input [GH-602]
• build: Fixing GOPATHs with spaces

MISC:

• provider/aws: Upgraded to helper.Schema
• provider/heroku: Upgraded to helper.Schema
• provider/mailgun: Upgraded to helper.Schema
• provider/dnsimple: Upgraded to helper.Schema
• provider/cloudflare: Upgraded to helper.Schema
• provider/digitalocean: Upgraded to helper.Schema
• provider/google: Upgraded to helper.Schema

0.3.1 (October 21, 2014)

IMPROVEMENTS:

• providers/aws: Support tags for security groups.
• providers/google: Add "external_address" to network attributes [GH-454]
• providers/google: External address is used as default connection host. [GH-454]
• providers/heroku: Support locked and personal booleans on organization settings. [GH-406]

BUG FIXES:

• core: Remove panic case when applying with a plan that generates no new state. [GH-403]
• core: Fix a hang that can occur with enough resources. [GH-410]
• core: Config validation will not error if the field is being computed so the value is still unknown.
• core: If a resource fails to create and has provisioners, it is marked as tainted. [GH-434]
• core: Set types are validated to be sets. [GH-413]
• core: String types are validated properly. [GH-460]
• core: Fix crash case when destroying with tainted resources. [GH-412]
• core: Don't execute provisioners in some cases on destroy.
• core: Inherited provider configurations will be properly interpolated. [GH-418]
• core: Refresh works properly if there are outputs that depend on resources that aren't yet created. [GH-483]
• providers/aws: Refresh of launch configs and autoscale groups load the correct data and don't incorrectly recreate themselves. [GH-425]
• providers/aws: Fix case where ELB would incorrectly plan to modify listeners (with the same data) in some cases.
• providers/aws: Retry destroying internet gateway for some amount of time if there is a dependency violation since it is probably just eventual consistency (public facing resources being destroyed). [GH-447]
• providers/aws: Retry deleting security groups for some amount of time if there is a dependency violation since it is probably just eventual consistency. [GH-436]
• providers/aws: Retry deleting subnet for some amount of time if there is a dependency violation since probably asynchronous destroy events take place still. [GH-449]
• providers/aws: Drain autoscale groups before deleting. [GH-435]
• providers/aws: Fix crash case if launch config is manually deleted. [GH-421]
• providers/aws: Disassociate EIP before destroying.
• providers/aws: ELB treats subnets as a set.
• providers/aws: Fix case where in a destroy/create tags weren't reapplied. [GH-464]
• providers/aws: Fix incorrect/erroneous apply cases around security group rules. [GH-457]
• providers/consul: Fix regression where key param changed to `keys. [GH-475]

0.3.0 (October 14, 2014)

FEATURES:

• Modules: Configuration can now be modularized. Modules can live on GitHub, BitBucket, Git/Hg repos, HTTP URLs, and file paths. Terraform automatically downloads/updates modules for you on request.
• New Command: init. This command initializes a Terraform configuration from an existing Terraform module (also new in 0.3).
• New Command: destroy. This command destroys infrastructure created with apply.
• Terraform will ask for user input to fill in required variables and provider configurations if they aren't set.
• terraform apply MODULE can be used as a shorthand to quickly build infrastructure from a module.
• The state file format is now JSON rather than binary. This allows for easier machine and human read/write. Old binary state files will be automatically upgraded.
• You can now specify create_before_destroy as an option for replacement so that new resources are created before the old ones are destroyed.
• The count metaparameter can now contain interpolations (such as variables).
• The current index for a resource with a count set can be interpolated using ${count.index}.
• Various paths can be interpolated with the path.X variables. For example, the path to the current module can be interpolated using ${path.module}.

IMPROVEMENTS:

• config: Trailing commas are now allowed for the final elements of lists.
• core: Plugins are loaded from ~/.terraform.d/plugins (Unix) or %USERDATA%/terraform.d/plugins (Windows).
• command/show: With no arguments, it will show the default state. [GH-349]
• helper/schema: Can now have default values. [GH-245]
• providers/aws: Tag support for most resources.
• providers/aws: New resource db_subnet_group. [GH-295]
• providers/aws: Add map_public_ip_on_launch for subnets. [GH-285]
• providers/aws: Add iam_instance_profile for instances. [GH-319]
• providers/aws: Add internal option for ELBs. [GH-303]
• providers/aws: Add ssl_certificate_id for ELB listeners. [GH-350]
• providers/aws: Add self option for security groups for ingress rules with self as source. [GH-303]
• providers/aws: Add iam_instance_profile option to aws_launch_configuration. [GH-371]
• providers/aws: Non-destructive update of desired_capacity for autoscale groups.
• providers/aws: Add main_route_table_id attribute to VPCs. [GH-193]
• providers/consul: Support tokens. [GH-396]
• providers/google: Support target_tags for firewalls. [GH-324]
• providers/google: google_compute_instance supports can_ip_forward [GH-375]
• providers/google: google_compute_disk supports type to support disks such as SSDs. [GH-351]
• provisioners/local-exec: Output from command is shown in CLI output. [GH-311]
• provisioners/remote-exec: Output from command is shown in CLI output. [GH-311]

BUG FIXES:

• core: Providers are validated even without a provider block. [GH-284]
• core: In the case of error, walk all non-dependent trees.
• core: Plugin loading from CWD works properly.
• core: Fix many edge cases surrounding the count meta-parameter.
• core: Strings in the configuration can escape double-quotes with the standard \" syntax.
• core: Error parsing CLI config will show properly. [GH-288]
• core: More than one Ctrl-C will exit immediately.
• providers/aws: autoscaling_group can be launched into a vpc [GH-259]
• providers/aws: not an error when RDS instance is deleted manually. [GH-307]
• providers/aws: Retry deleting subnet for some time while AWS eventually destroys dependencies. [GH-357]
• providers/aws: More robust destroy for route53 records. [GH-342]
• providers/aws: ELB generates much more correct plans without extranneous data.
• providers/aws: ELB works properly with dynamically changing count of instances.
• providers/aws: Terraform can handle ELBs deleted manually. [GH-304]
• providers/aws: Report errors properly if RDS fails to delete. [GH-310]
• providers/aws: Wait for launch configuration to exist after creation (AWS eventual consistency) [GH-302]

0.2.2 (September 9, 2014)

IMPROVEMENTS:

• providers/amazon: Add ebs_optimized flag. [GH-260]
• providers/digitalocean: Handle 404 on delete
• providers/digitalocean: Add user_data argument for creating droplets
• providers/google: Disks can be marked auto_delete. [GH-254]

BUG FIXES:

• core: Fix certain syntax of configuration that could cause hang. [GH-261]
• core: -no-color flag properly disables color. [GH-250]
• core: "~" is expanded in -var-file flags. [GH-273]
• core: Errors with tfvars are shown in console. [GH-269]
• core: Interpolation function calls with more than two args parse. [GH-282]
• providers/aws: Refreshing EIP from pre-0.2 state file won't error. [GH-258]
• providers/aws: Creating EIP without an instance/network won't fail.
• providers/aws: Refreshing EIP manually deleted works.
• providers/aws: Retry EIP delete to allow AWS eventual consistency to detect it isn't attached. [GH-276]
• providers/digitalocean: Handle situations when resource was destroyed manually. [GH-279]
• providers/digitalocean: Fix a couple scenarios where the diff was incorrect (and therefore the execution as well).
• providers/google: Attaching a disk source (not an image) works properly. [GH-254]

0.2.1 (August 31, 2014)

IMPROVEMENTS:

• core: Plugins are automatically discovered in the executable directory or pwd if named properly. [GH-190]
• providers/mailgun: domain records are now saved to state

BUG FIXES:

• core: Configuration parses when identifier and '=' have no space. [GH-243]
• core: depends_on with count generates the proper graph. [GH-244]
• core: Depending on a computed variable of a list type generates a plan without failure. i.e. ${type.name.foos.0.bar} where foos is computed. [GH-247]
• providers/aws: Route53 destroys in parallel work properly. [GH-183]

0.2.0 (August 28, 2014)

BACKWARDS INCOMPATIBILITIES:

• We've replaced the configuration language in use from a C library to a pure-Go reimplementation. In the process, we removed some features of the language since it was too flexible:
  • Semicolons are no longer valid at the end of lines
  • Keys cannot be double-quoted strings: "foo" = "bar" is no longer valid.
  • JSON style maps { "foo": "bar" } are no longer valid outside of JSON. Maps must be in the format of { foo = "bar" } (like other objects in the config)
• Heroku apps now require (will not validate without) region and name due to an upstream API change. [GH-239]

FEATURES:

• New Provider: google: Manage Google Compute instances, disks, firewalls, and more.
• New Provider: mailgun: Manage mailgun domains.
• New Function: concat: Concatenate multiple strings together. Example: concat(var.region, "-", var.channel).

IMPROVEMENTS:

• core: "~/.terraformrc" (Unix) or "%APPDATA%/terraform.rc" (Windows) can be used to configure custom providers and provisioners. [GH-192]
• providers/aws: EIPs now expose allocation_id and public_ip attributes.
• providers/aws: Security group rules can be updated without a destroy/create.
• providers/aws: You can enable and disable dns settings for VPCs. [GH-172]
• providers/aws: Can specify a private IP address for aws_instance [GH-217]

BUG FIXES:

• core: Variables are validated to not contain interpolations. [GH-180]
• core: Key files for provisioning can now contain ~ and will be expanded to the user's home directory. [GH-179]
• core: The file() function can load files in sub-directories. [GH-213]
• core: Fix issue where some JSON structures didn't map properly into Terraform structures. [GH-177]
• core: Resources with only file() calls will interpolate. [GH-159]
• core: Variables work in block names. [GH-234]
• core: Plugins are searched for in the same directory as the executable before the PATH. [GH-157]
• command/apply: "tfvars" file no longer interferes with plan apply. [GH-153]
• providers/aws: Fix issues around failing to read EIPs. [GH-122]
• providers/aws: Autoscaling groups now register and export load balancers. [GH-207]
• providers/aws: Ingress results are treated as a set, so order doesn't matter anymore. [GH-87]
• providers/aws: Instance security groups treated as a set [GH-194]
• providers/aws: Retry Route53 requests if operation failed because another operation is in progress [GH-183]
• providers/aws: Route53 records with multiple record values work. [GH-221]
• providers/aws: Changing AMI doesn't result in errors anymore. [GH-196]
• providers/heroku: If you delete the config_vars block, config vars are properly nuked.
• providers/heroku: Domains and drains are deleted before the app.
• providers/heroku: Moved from the client library bgentry/heroku-go to cyberdelia/heroku-go [GH-239].
• providers/heroku: Plans without a specific plan name for heroku_addon work. [GH-198]

PLUGIN CHANGES:

• New Package: helper/schema. This introduces a high-level framework for easily writing new providers and resources. The Heroku provider has been converted to this as an example.

0.1.1 (August 5, 2014)

FEATURES:

• providers/heroku: Now supports creating Heroku Drains [GH-97]

IMPROVEMENTS:

• providers/aws: Launch configurations accept user data [GH-94]
• providers/aws: Regions are now validated [GH-96]
• providers/aws: ELB now supports health check configurations [GH-109]

BUG FIXES:

• core: Default variable file "terraform.tfvars" is auto-loaded. [GH-59]
• core: Multi-variables (foo.*.bar) work even when count = 1. [GH-115]
• core: file() function can have string literal arg [GH-145]
• providers/cloudflare: Include the proper bins so the cloudflare provider is compiled
• providers/aws: Engine version for RDS now properly set [GH-118]
• providers/aws: Security groups now depend on each other and
• providers/aws: DB instances now wait for destroys, have proper dependencies and allow passing skip_final_snapshot
• providers/aws: Add associate_public_ip_address as an attribute on the aws_instance resource [GH-85]
• providers/aws: Fix cidr blocks being updated [GH-65, GH-85]
• providers/aws: Description is now required for security groups
• providers/digitalocean: Private IP addresses are now a separate attribute
• provisioner/all: If an SSH key is given with a password, a better error message is shown. [GH-73]

0.1.0 (July 28, 2014)

• Initial release