A GitHub Action to securely store Terraform plan files in a cloud storage (S3 or Azure Blob Storage) with metadata storage in cloud document database (DynamoDB or CosmosDB).
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A Github Action to securely store Terraform plan files in a cloud storage (S3 or Azure Blob Storage) with metadata storage in cloud document database (DynamoDB or CosmosDB). This is useful in CI/CD pipelines where you want to store the plan files when a feature branch is opened and applied when merged.
Standard usage for this action is with AWS. In AWS, we store Terraform plan files in a S3 Bucket and store metadata in DynamoDB. Specify the DynamoDB table name and S3 bucket name with tableName and bucketName respectively.
The filepath in S3 and the attributes in DynamoDB will use the given component and stack values to update or create a unique target for each Terraform plan file.
The plan file itself is pulled from or writen to a local file path. Set this with planPath.
Finally, choose whether to store the plan file or retrieve an existing plan file. To create or update a plan file, set action to storePlan. To pull an existing plan file, set action to getPlan.
- name: Store Plan
uses: cloudposse/github-action-terraform-plan-storage@v1
id: store-plan
with:
action: storePlan
planPath: my-plan.tfplan
component: mycomponent
stack: core-mycomponent-use1
tableName: acme-terraform-plan-metadata
bucketName: acme-terraform-plans
- name: Get Plan
uses: cloudposse/github-action-terraform-plan-storage@v1
id: get-plan
with:
action: getPlan
planPath: my-plan.tfplan
component: mycomponent
stack: core-mycomponent-use1
tableName: acme-terraform-plan-metadata
bucketName: acme-terraform-plansThis action also supports Azure. In Azure, we store Terraform plan files with Blob Storage and store metadata in Cosmos DB.
To use the Azure implementation rather than the default AWS implementation, specify planRepositoryType as azureblob and metadataRepositoryType as cosmos. Then pass the Blob Account and Container names with blobAccountName and blobContainerName and the Cosmos Container name, Database name, and Endpoint with cosmosContainerName, cosmosDatabaseName, and cosmosEndpoint.
Again set the component, stack, planPath, and action in the same manner as AWS above.
- name: Store Plan
uses: cloudposse/github-action-terraform-plan-storage@v1
id: store-plan
with:
action: storePlan
planPath: my-plan.tfplan
component: mycomponent
stack: core-mycomponent-use1
planRepositoryType: azureblob
blobAccountName: tfplans
blobContainerName: plans
metadataRepositoryType: cosmos
cosmosContainerName: terraform-plan-storage
cosmosDatabaseName: terraform-plan-storage
cosmosEndpoint: "https://my-cosmo-account.documents.azure.com:443/"
- name: Get Plan
uses: cloudposse/github-action-terraform-plan-storage@v1
id: get-plan
with:
action: getPlan
planPath: my-plan.tfplan
component: mycomponent
stack: core-mycomponent-use1
planRepositoryType: azureblob
blobAccountName: tfplans
blobContainerName: plans
metadataRepositoryType: cosmos
cosmosContainerName: terraform-plan-storage
cosmosDatabaseName: terraform-plan-storage
cosmosEndpoint: "https://my-cosmo-account.documents.azure.com:443/"Important
In Cloud Posse's examples, we avoid pinning modules to specific versions to prevent discrepancies between the documentation and the latest released versions. However, for your own projects, we strongly advise pinning each module to the exact version you're using. This practice ensures the stability of your infrastructure. Additionally, we recommend implementing a systematic approach for updating versions to avoid unexpected changes.
| Name | Description | Default | Required |
|---|---|---|---|
| action | which action to perform. Valid values are: 'storePlan', 'getPlan', 'taintPlan' | storePlan | true |
| blobAccountName | the name of the Azure Blob Storage account to store the plan file | N/A | false |
| blobContainerName | the name of the Azure Blob Storage container to store the plan file | N/A | false |
| bucketName | the name of the S3 bucket to store the plan file | terraform-plan-storage | false |
| commitSHA | Commit SHA to use for fetching plan | false | |
| component | the name of the component corresponding to the plan file | N/A | false |
| cosmosConnectionString | the connection string to the CosmosDB account to store the metadata | N/A | false |
| cosmosContainerName | the name of the CosmosDB container to store the metadata | N/A | false |
| cosmosDatabaseName | the name of the CosmosDB database to store the metadata | N/A | false |
| cosmosEndpoint | the endpoint of the CosmosDB account to store the metadata | N/A | false |
| failOnMissingPlan | Fail if plan is missing | true | false |
| metadataRepositoryType | the type of repository where the plan file is stored. Valid values are: 'dynamo', 'cosmodb' | dynamo | false |
| planPath | path to the Terraform plan file. Required for 'storePlan' and 'getPlan' actions | N/A | false |
| planRepositoryType | the type of repository where the metadata is stored. Valid values are: 's3', 'azureblob' | s3 | false |
| stack | the name of the stack corresponding to the plan file | N/A | false |
| tableName | the name of the dynamodb table to store metadata | terraform-plan-storage | false |
| Name | Description |
|---|
Check out these related projects.
- github-action-atmos-terraform-plan - This Github Action is used to run Terraform plan for a single, Atmos-supported component and save the given planfile to S3 and DynamoDB.
- github-action-atmos-terraform-apply - This Github Action is used to run Terraform apply for a single, Atmos-supported component with a saved planfile in S3 and DynamoDB.
For additional context, refer to some of these links.
- Cloud Posse Documentation - Complete documentation for the Cloud Posse solution
- Reference Architectures - Launch effortlessly with our turnkey reference architectures, built either by your team or ours.
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