This Github Action is used to detect drift
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Works with Github Actions, Atlantis, or Spacelift.
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Example of running
atmos to manage infrastructure from our Quick Start tutorial.
This Github Action is used to detect drift.
It will create or update github issue once drift is detect.
It is expected to run this action in a workflow with a scheduled run.
There is another companion action github-action-atmos-terraform-drift-remediation.
name: 👽 Atmos Terraform Drift Detection
on:
schedule:
- cron: "0 * * * *"
permissions:
id-token: write
contents: write
issues: write
jobs:
select-components:
runs-on: ubuntu-latest
name: Select Components
outputs:
matrix: ${{ steps.components.outputs.matrix }}
steps:
- name: Selected Components
id: components
uses: cloudposse/github-action-atmos-terraform-select-components@v0
with:
jq-query: 'to_entries[] | .key as $parent | .value.components.terraform | to_entries[] | select(.value.settings.github.actions_enabled // false) | [$parent, .key] | join(",")'
debug: ${{ env.DEBUG_ENABLED }}
plan-atmos-components:
needs:
- select-components
runs-on: ubuntu-latest
if: ${{ needs.select-components.outputs.matrix != '{"include":[]}' }}
strategy:
fail-fast: false # Don't fail fast to avoid locking TF State
matrix: ${{ fromJson(needs.select-components.outputs.matrix) }}
name: ${{ matrix.stack_slug }}
env:
GITHUB_TOKEN: "${{ github.token }}"
steps:
- name: Plan Atmos Component
id: atmos-plan
uses: cloudposse/github-action-atmos-terraform-plan@v0
with:
component: ${{ matrix.component }}
stack: ${{ matrix.stack }}
component-path: ${{ matrix.component_path }}
drift-detection-mode-enabled: "true"
terraform-plan-role: "arn:aws:iam::111111111111:role/acme-core-gbl-identity-gitops"
terraform-state-bucket: "acme-core-ue2-auto-gitops"
terraform-state-role: "arn:aws:iam::999999999999:role/acme-core-ue2-auto-gitops-gha"
terraform-state-table: "acme-core-ue2-auto-gitops"
aws-region: "us-east-2"
drift-detection:
needs:
- plan-atmos-components
runs-on: ubuntu-latest
steps:
- name: Drift Detection
uses: cloudposse/github-action-atmos-terraform-drift-detection@v0
with:
max-opened-issues: '3'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 |
|---|---|---|---|
| assignee-teams | Comma-separated list of teams to assign issues to. You have to pass github token with read:org scope. This is used only when issue is getting created. |
false | |
| assignee-users | Comma-separated list of users to assign issues to. This is used only when issue is getting created. | false | |
| labels | Comma-separated list of additional labels to assign issues to. | false | |
| max-opened-issues | Number of open drift detection issues. Use -1 to open unlimited number of issues. Default: 10 |
10 | false |
| process-all | Process all issues or only the ones that relates to affected stacks. Default: false | false | false |
| token | Used to pull node distributions for Atmos from Cloud Posse's GitHub repository. Since there's a default, this is typically not supplied by the user. When running this action on github.com, the default value is sufficient. When running on GHES, you can pass a personal access token for github.com if you are experiencing rate limiting. | ${{ github.server_url == 'https://github.com' && github.token || '' }} | false |
Check out these related projects.
For additional context, refer to some of these links.
- github-action-atmos-terraform-drift-remediation - Companion GitHub Action for remediation
- github-action-atmos-terraform-select-components - Companion GitHub Action to select components that are suitable for drift detection
- github-action-terraform-plan - GitHub Action to do Terraform Plan
- github-action-terraform-apply - GitHub Action to do Terraform Apply
- github-action-terraform-plan-storage - A GitHub Action to securely store Terraform plan files in an S3 bucket with metadata storage in DynamoDB.
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