Terragrunt Drift Detection and Reconciliation #705
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| name: Terragrunt Drift Detection and Reconciliation | |
| on: | |
| workflow_dispatch: | |
| schedule: | |
| # Run the drift detection every 12 hours | |
| - cron: '0 */12 * * *' | |
| jobs: | |
| drift-detection: | |
| name: Check Drift | |
| env: | |
| GITHUB_TOKEN: ${{ github.token }} | |
| permissions: | |
| id-token: write | |
| contents: read | |
| pull-requests: read | |
| checks: 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@v2 | |
| - name: Install asdf | |
| uses: asdf-vm/actions/setup@v3 | |
| - name: Install Terraform and Terragrunt with asdf | |
| run: | | |
| asdf plugin add terraform | |
| asdf plugin add terragrunt | |
| asdf install terraform | |
| asdf install terragrunt | |
| ### 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 Terragrunt init on all stacks | |
| id: init | |
| run: terramate run -- terragrunt init | |
| - name: Run drift detection | |
| id: drift-detect | |
| run: | | |
| terramate run \ | |
| --parallel 5 \ | |
| --cloud-sync-drift-status \ | |
| --terraform-plan-file=drift.tfplan \ | |
| --terragrunt \ | |
| -- terragrunt plan -out drift.tfplan -detailed-exitcode -lock=false | |
| env: | |
| TF_VAR_master_password: ${{ secrets.MYSQL_PROD_MASTER_PASSWORD }} | |
| ### Optionally add a manual approval step for drift reconciliation (removed if you want to reconcile automatically) | |
| # - name: Wait for approval | |
| # uses: trstringer/manual-approval@v1 | |
| # with: | |
| # secret: ${{ github.token }} | |
| # approvers: terramate-io/engineering # Add approvers (users and teams) here | |
| # issue-title: "Recommendation: Drift Reconciliation" | |
| # minimum-approvals: 1 | |
| # Run terragrunt apply on all stacks tagged with 'reconcile' | |
| - name: Run Drift Reconciliation | |
| run: | | |
| terramate run \ | |
| --cloud-status=drifted \ | |
| --tags reconcile \ | |
| --cloud-sync-deployment \ | |
| --terraform-plan-file=drift.tfplan \ | |
| --terragrunt \ | |
| -- \ | |
| terragrunt apply -input=false -auto-approve -lock-timeout=5m drift.tfplan | |
| env: | |
| TF_VAR_master_password: ${{ secrets.MYSQL_PROD_MASTER_PASSWORD }} |