terramate-catalyst-examples/.github/workflows/drift.yml at main · terramate-io/terramate-catalyst-examples · GitHub

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name: Scheduled Terraform Drift Detection

on:
  schedule:
    - cron: '0 2 * * *'
  workflow_dispatch:

jobs:
  drift-detection:
    name: Check Drift

    runs-on: ubuntu-latest

    permissions:
      id-token: write
      contents: read
      pull-requests: read
      checks: read

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Install Terramate
        uses: terramate-io/terramate-action@v3.2.0

      - name: Install asdf
        uses: asdf-vm/actions/setup@v3

      - name: Install Terraform with asdf
        run: |
          asdf plugin add terraform
          asdf install terraform

      # # Comment this step out if not using AWS
      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v4
        with:
          aws-region: ${{ env.AWS_REGION }}
          role-to-assume: arn:aws:iam::${{ vars.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

      - name: Initialize Terraform
        id: init
        run: |
          terramate run \
           --parallel 1 \
           -- \
           terraform init -lock-timeout=5m

      - name: Run drift detection
        id: drift
        run: |
          terramate run \
          --sync-drift-status \
          --terraform-plan-file=drift.tfplan \
          --continue-on-error \
          --parallel 5 \
          -- \
          terraform plan -out drift.tfplan -detailed-exitcode -lock=false
        env:
          GITHUB_TOKEN: ${{ github.token }}

      # # Optional step to reconcile (apply) the drifted stacks
      # # This only applies to stack with a `reconcile` tag by default
      # # Uncomment if desired
      # - name: Check for auto reconcile
      #   id: find-drifted
      #   run: |
      #     terramate list \
      #       --status=drifted \
      #       --tags reconcile
      #
      # - name: Drift reconciliation
      #   id: drift-reconcile
      #   if: steps.find-drifted.outputs.stdout
      #   run: |
      #     terramate run \
      #       --status=drifted \
      #       --tags reconcile \
      #       --parallel 5 \
      #       --sync-deployment \
      #       --terraform-plan-file=drift.tfplan \
      #       -- \
      #       terraform apply -input=false -auto-approve -lock-timeout=5m drift.tfplan
      #   env:
      #     GITHUB_TOKEN: ${{ github.token }}