Commit Graph

240 Commits

Author SHA1 Message Date
Martin Atkins 671aace8ec backend/local: disable local backup of remote state
Previously we forced all remote state backends to be wrapped in a
BackupState wrapper that generates a local "terraform.tfstate.backup"
file before updating the remote state.

This backup mechanism was motivated by allowing users to recover a
previous state if user error caused an undesirable change such as loss
of the record of one or more resources. However, it also has the downside
of flushing a possibly-sensitive state to local disk in a location where
users may not realize its purpose and accidentally check it into version
control. Those using remote state would generally prefer that state never
be flushed to local disk at all.

The use-case of recovering older states can be dealt with for remote
backends by selecting a backend that has preservation of older versions
as a first-class feature, such as S3 versioning or Terraform Enterprise's
first-class historical state versioning mechanism.

There remains still one case where state can be flushed to local disk: if
a write to the remote backend fails during "terraform apply" then we will
still create the "errored.tfstate" file to allow the user to recover. This
seems like a reasonable compromise because this is done only in an
_exceptional_ case, and the console output makes it very clear that this
file has been created.

Fixes #15339.
2017-10-27 17:06:33 -07:00
James Bardin 55089e472d
Merge pull request #16484 from hashicorp/f-gcloud-backend
Convert gcloud backend
2017-10-27 17:23:22 -04:00
Florian Forster afa13a3d8e backend/remote-state/gcs: Move toBucketName to the tests. 2017-10-27 16:52:21 -04:00
Florian Forster 3023ae2813 backend/remote-state/gcs: Include project ID in bucket names when testing.
Since bucket names must be *globally* unique. By including the project
ID in the bucket name we ensure that people don't step on each other's
feet when testing.
2017-10-27 16:52:21 -04:00
Florian Forster dcb84ee2c2 backend/remote-state/gcs: Sanitize bucket names. 2017-10-27 16:52:21 -04:00
Florian Forster 454d6bbe2a backend/remote-state/gcs: Delete test buckets after tests complete.
This way tests clean up after themselves and don't leak buckets.
2017-10-27 16:52:21 -04:00
Florian Forster a6669c9e99 backend/remote-state/gcs: Don't enable versioning on new buckets.
Enabling versioning without setting up lifecycle management leads to
every lock file being archived, slowly accruing useless data.
2017-10-27 16:52:21 -04:00
Florian Forster a84823f597 backend/remote-state/gcs: Require TF_ACC for tests using the network. 2017-10-27 16:52:21 -04:00
Florian Forster 72ccf22a92 backend/remote-state/gcs: Implement additional tests.
This calls backend.TestBackend() and remote.TestRemoteLocks() for
standardized acceptance tests. It removes custom listing tests since
those are performed by backend.TestBackend(), too.

Since each tests uses its own bucket, all tests can be run in parallel.
2017-10-27 16:52:21 -04:00
Florian Forster 927085289d backend/remote-state/gcs: Implement the "region" config option.
This allows to select the region in which a bucket is created.
This copies behavior from the Google Cloud provider.
2017-10-27 16:52:21 -04:00
Florian Forster 9583d0945c backend/remote-state/gcs: Add support for the GOOGLE_PROJECT environment variable.
This copies behavior from the Google Cloud provider.
2017-10-27 16:52:21 -04:00
Florian Forster 37dc95158d backend/remote-state/gcs: Enable versioning on automatically created buckets. 2017-10-27 16:52:21 -04:00
Florian Forster df386d3133 backend/remote-state/gcs: Automatically create the bucket if needed.
This resurrects the previously documented but unused "project" option.
This option is required to create buckets (so they are associated with the
right cloud project) but not to access the buckets later on (because their
names are globally unique).
2017-10-27 16:52:21 -04:00
Florian Forster 14263223e7 backend/remote-state/gcs: Simplify initialization of the GCS client.
This also implements the (already documented) behavior of checking the
GOOGLE_CREDENTIALS environment variable.
2017-10-27 16:52:21 -04:00
Florian Forster 816c98f387 backend/remote-state/gcs: Read credentials with ioutil.ReadFile().
We never expect the raw JSON to appear in the config, so pathorcontents is
not the right package here.
2017-10-27 16:52:21 -04:00
Florian Forster c00e929ee5 backend/remote-state/gcs: Mark the "path" option as deprecated. 2017-10-27 16:52:21 -04:00
Florian Forster 91b1a39a40 backend/remote-state/gcs: Implement an end-to-end test.
The code is loosely based on state/remote/gcs_test.go. If the
GOOGLE_PROJECT environment variable is set, this test will

1) create a new bucket; error out if the bucket already exists.
2) create a new state
3) list states and ensure that the newly created state is listed
4) ensure that an object with the expected name exists
5) rum "state/remote".TestClient()
6) delete the state

The bucket is deleted when the test exits, though this may fail if the
bucket it not empty.
2017-10-27 16:51:21 -04:00
Florian Forster 14bfbf0617 backend/remote-state/gcs: Document the "prefix" option.
"state_dir" has been renamed to "prefix" to better fix the GCS
terminology.
2017-10-27 16:51:21 -04:00
Florian Forster c054bd0939 backend/remote-state/gcs: Rename "gcloud" to "gcs" for backwards compatibility. 2017-10-27 16:51:21 -04:00
Florian Forster 93a55f15e9 backend/remote-state/gcloud: Add test for Backend.{state,lock}File(). 2017-10-27 16:51:21 -04:00
Florian Forster 5a4e2076e9 backend/remote-state/gcloud: Add the "path" config option.
This config option was used by the legacy "gcs" client. If set, we're
using it for the default state -- all other states still use the
"state_dir" setting.
2017-10-27 16:51:21 -04:00
Florian Forster f80b872bc3 backend/remote-state/gcloud: Unify on the "context" package.
We don't need to use the legacy package here.
2017-10-27 16:51:21 -04:00
Florian Forster 5d4e25ada4 backend/remote-state/gcloud: Make gcsBackend private.
This class is only used via the "backend".Backend interface, so there is
no need to export this type beyond the gcloud package.
2017-10-27 16:51:21 -04:00
Florian Forster 9ec39573ee backend/remote-state/gcloud: Make remoteClient private.
This class is only used via the "state/remote".State interface, so there
is no need to export this type beyond the gcloud package.
2017-10-27 16:51:21 -04:00
Florian Forster 42e8441a2b backend/remote-state/gcloud: Refactor Backend.State().
Fixes:
* https://github.com/golang/go/wiki/CodeReviewComments#doc-comments
* https://github.com/golang/go/wiki/CodeReviewComments#error-strings
* https://github.com/golang/go/wiki/CodeReviewComments#initialisms
2017-10-27 16:51:21 -04:00
Florian Forster 5cb574035a backend/remote-state/gcloud: Refactor Backend.remoteClient().
This replaces stateFileName() and lockFileName() with path.Join().

Fixes:
* https://github.com/golang/go/wiki/CodeReviewComments#doc-comments
* https://github.com/golang/go/wiki/CodeReviewComments#doc-comments
2017-10-27 16:51:21 -04:00
Florian Forster 9ae45e320f backend/remote-state/gcloud: Refactor Backend.DeleteState().
Fixes:
* https://github.com/golang/go/wiki/CodeReviewComments#doc-comments
* https://github.com/golang/go/wiki/CodeReviewComments#error-strings
2017-10-27 16:51:21 -04:00
Florian Forster fabba5c0c8 backend/remote-state/gcloud: Refactor Backend.States().
The previous code listed all objects in the bucket and used local filtering
(using regular expressions) to find .tfstate objects. This new code sets
the delimiter to "/", which causes GCS to only return objects directly in
the given prefix, but not any sub"directories".

Fixes:
* https://github.com/golang/go/wiki/CodeReviewComments#doc-comments
* https://github.com/golang/go/wiki/CodeReviewComments#error-strings
2017-10-27 16:51:21 -04:00
Florian Forster 97e1aa7ce9 backend/remote-state/gcloud: Use the lock file's generation as lock ID.
This allows Unlock() to call Delete() without reading the lock file's
content first.
2017-10-27 16:51:21 -04:00
Florian Forster edf2096e28 backend/remote-state/gcloud: Use the context provided to configure().
Calling context.Background() from outside the main() function is
discouraged. The configure functions are only called from
"…/helper/schema".Backend.Configure which provides the Background context,
i.e. a long-living context we can use for backend communication.
2017-10-27 16:51:21 -04:00
Florian Forster 2e5fca78c2 backend/remote-state/gcloud: Coding style changes.
Refactorings to make the code more idiomatic.
2017-10-27 16:51:21 -04:00
Florian Forster f33005faba backend/remote-state/gcloud: Handle errors returned by Write(), too.
Many GCS errors are returned by Close(), but not all.
2017-10-27 16:51:21 -04:00
Florian Forster 1ee194986d backend/remote-state/gcloud: Add the RemoteClient.{state,lock}File() methods. 2017-10-27 16:51:20 -04:00
Florian Forster e54d36b489 backend/remote-state/gcloud: Sort standard library imports before other imports. 2017-10-27 16:51:20 -04:00
Florian Forster 52ac764036 backend/remote-state/gcloud: Rename Url -> URL 2017-10-27 16:51:20 -04:00
Florian Forster 5313e15e07 backend/remote-state/gcloud: Move the definition of the Backend struct. 2017-10-27 16:51:20 -04:00
Florian Forster def3279ec7 backend/remote-state/gcloud: Use package provided OAuth scope. 2017-10-27 16:51:20 -04:00
Piotrek Bzdyl 5854373018 Implemented GCloud backend supporting remote locking and multiple workspaces. 2017-10-27 16:51:20 -04:00
James Bardin b040cd0837 dynamoDB reads are not fully consisten by default
Use fully consistent reads for backend operations.
2017-10-27 16:43:30 -04:00
James Bardin 31912956ce Merge pull request #16290 from hashicorp/jbardin/s3-errors
retry on s3 state upload errors
2017-10-17 16:04:14 -04:00
James Bardin 611b1ced59 retry on s3 state upload errors
While #16243 added the ability to retry getting a state from S3, Put can
return the same InternalError status. Use the same retry logic when
uploading state to S3.
2017-10-08 16:46:33 -04:00
James Bardin f5e9a20c66 reset testLockHook 2017-10-08 16:24:45 -04:00
James Bardin 25a8227291 add broken test for lock lost on connection error
Add a way to inject network errors by setting an immediate deadline on
open consul connections. The consul client currently doesn't retry on
some errors, and will force us to lose our lock.

Once the consul api client is fixed, this test will fail.
2017-10-08 16:16:57 -04:00
James Bardin fd9adcdb36 only init one consul client, and lower keepalive
The consul Client is analogous to an http.Client, and we really don't
need more than 1. Configure a single client and store it in the backend.

Replace the default Transport's Dialer to reduce the KeepAlive setting
from 30s to 17s. This avoids racing with the common network timeout
value of 30s, and is also coprime to other common intervals.
2017-10-08 11:51:35 -04:00
James Bardin d0ecb232ae record consul session ID in lock info
This can help correlate TF and consul logs
2017-10-08 11:24:43 -04:00
James Bardin b20ab9f0bb Merge pull request #16243 from hashicorp/jbardin/s3-errors
retry on s3 backend internal errors
2017-10-04 09:26:26 -04:00
bclodius fba02f0bea retry on s3 backend internal errors
Internal errors from S3 are usually transient, and can be immediately retried.
Make 2 attempts at retreiving the state object before returning an error.
2017-10-04 09:11:30 -04:00
James Bardin 91442b7146 Merge pull request #15680 from brunomcustodio/etcdv3-backend
[WIP] etcd v3 backend with lock support.
2017-10-03 14:15:58 -04:00
James Bardin d477d1f6d4 Merge pull request #15553 from bonifaido/custom_s3_backend
Allow non-AWS S3 backends
2017-10-02 19:39:48 -04:00
James Bardin e0ee1e4d6e Merge pull request #16070 from octo/defaultdatadir
backend/local: Remove unused const DefaultDataDir.
2017-10-02 16:27:23 -04:00