Terragrunt Drift Detection and Reconciliation #18
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| name: Scheduled Terraform Drift Detection | |
| on: | |
| schedule: | |
| # Run the drift detection every 6 hours | |
| - cron: '0 */6 * * *' | |
| jobs: | |
| drift-detection: | |
| name: Check Drift | |
| permissions: | |
| id-token: write | |
| contents: read | |
| pull-requests: read | |
| runs-on: ubuntu-latest | |
| steps: | |
| ### Check out the code | |
| - name: Checkout | |
| uses: actions/checkout@v4 | |
| with: | |
| ref: ${{ github.head_ref }} | |
| fetch-depth: 0 | |
| ### Install tooling | |
| - name: Install Terramate | |
| uses: terramate-io/terramate-action@v1 | |
| - name: Install asdf | |
| uses: asdf-vm/actions/setup@v3 | |
| - name: Install Terraform with asdf | |
| run: | | |
| asdf plugin add terraform | |
| asdf install terraform | |
| ### Configure cloud credentials | |
| - name: Configure AWS credentials | |
| uses: aws-actions/configure-aws-credentials@v2 | |
| with: | |
| aws-region: ${{ env.AWS_REGION }} | |
| role-to-assume: arn:aws:iam::${{ env.AWS_ACCOUNT_ID }}:role/github | |
| env: | |
| AWS_REGION: us-east-1 | |
| AWS_ACCOUNT_ID: ${{ vars.AWS_ACCOUNT_ID }} | |
| - name: Verify AWS credentials | |
| run: aws sts get-caller-identity | |
| ### Run Dift Check | |
| - name: Run Terraform init on all stacks | |
| id: init | |
| run: terramate run -C prod -- terraform init | |
| - name: Run drift detection | |
| id: drift | |
| run: terramate run -C prod --cloud-sync-drift-status --cloud-sync-terraform-plan-file=drift.tfplan --continue-on-error -- terraform plan -out drift.tfplan -detailed-exitcode -lock=false | |
| env: | |
| GITHUB_TOKEN: ${{ github.token }} |