Delete GCP resources #97
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| # This workflow is designed to delete old Google Cloud Platform (GCP) resources to save on costs. | |
| # | |
| # 1. Deletes specific instances in GCP older than a defined number of days. | |
| # 2. Deletes instance templates older than a set number of days. | |
| # 3. Deletes older disks not currently in use, with certain ones prefixed by commit hashes or "zebrad-". | |
| # 4. Deletes cache images from GCP, retaining a specified number of the latest images for certain types like zebrad checkpoint cache, zebrad tip cache, and lightwalletd + zebrad tip cache. | |
| # 5. Deletes unused artifacts from Google Artifact Registry older than a defined number of hours while retaining the latest few. | |
| # | |
| # It uses the gcloud CLI for most of its operations and also leverages specific GitHub Actions like the gcr-cleaner for deleting old images from the Google Artifact Registry. | |
| # The workflow is scheduled to run daily at 0700 UTC. | |
| name: Delete GCP resources | |
| on: | |
| # Run daily, when most devs aren't working | |
| # 0700 UTC is after AEST working hours but before ET working hours | |
| schedule: | |
| - cron: "0 7 * * *" | |
| workflow_dispatch: | |
| env: | |
| # Delete all resources created before $DELETE_INSTANCE_DAYS days ago. | |
| # We keep this short to reduce CPU, RAM, and storage costs. | |
| DELETE_INSTANCE_DAYS: 3 | |
| # Delete all other resources created before $DELETE_AGE_DAYS days ago. | |
| # We keep this short to reduce storage costs. | |
| DELETE_AGE_DAYS: 2 | |
| # But keep the latest $KEEP_LATEST_IMAGE_COUNT images of each type. | |
| # We keep this small to reduce storage costs. | |
| KEEP_LATEST_IMAGE_COUNT: 2 | |
| # Delete all artifacts in registry created before $DELETE_IMAGE_HOURS hours ago. | |
| # We keep this long enough for PRs that are still on the same commit can re-run with the same image. | |
| DELETE_IMAGE_HOURS: 504h # 21 days | |
| jobs: | |
| delete-resources: | |
| name: Delete old GCP resources | |
| runs-on: ubuntu-latest | |
| permissions: | |
| contents: 'read' | |
| id-token: 'write' | |
| steps: | |
| - uses: actions/[email protected] | |
| with: | |
| persist-credentials: false | |
| # Setup gcloud CLI | |
| - name: Authenticate to Google Cloud | |
| id: auth | |
| uses: google-github-actions/[email protected] | |
| with: | |
| workload_identity_provider: '${{ vars.GCP_WIF }}' | |
| service_account: '${{ vars.GCP_DEPLOYMENTS_SA }}' | |
| - name: Set up Cloud SDK | |
| uses: google-github-actions/[email protected] | |
| # Deletes all mainnet and testnet instances older than $DELETE_INSTANCE_DAYS days. | |
| # | |
| # We only delete instances that end in 7 or more hex characters, | |
| # to avoid deleting managed instance groups and manually created instances. | |
| # | |
| # ${INSTANCE_AND_ZONE} expands to: | |
| # <instance-name> --zone=<zone-name> | |
| # so it can't be shell-quoted. | |
| - name: Delete old instances | |
| run: | | |
| ./.github/workflows/scripts/gcp-delete-old-instances.sh | |
| # Deletes all the instance templates older than $DELETE_AGE_DAYS days. | |
| - name: Delete old instance templates | |
| run: | | |
| ./.github/workflows/scripts/gcp-delete-old-templates.sh | |
| # Deletes all mainnet and testnet disks older than $DELETE_AGE_DAYS days. | |
| # | |
| # Disks that are attached to an instance template can't be deleted, so it is safe to try to delete all disks here. | |
| # | |
| # ${DISK_AND_LOCATION} expands to: | |
| # <disk-name> --[zone|region]=<location-name> | |
| # so it can't be shell-quoted. | |
| - name: Delete old disks | |
| run: | | |
| ./.github/workflows/scripts/gcp-delete-old-disks.sh | |
| # Deletes mainnet and testnet cache images older than $DELETE_AGE_DAYS days. | |
| # | |
| # Keeps all images younger than $DELETE_AGE_DAYS. | |
| # Also keeps $KEEP_LATEST_IMAGE_COUNT older images of each type, for each network: | |
| # - zebrad checkpoint cache | |
| # - zebrad tip cache | |
| # - lightwalletd + zebrad tip cache | |
| # | |
| # TODO: | |
| # - refactor out repeated shell script code | |
| - name: Delete old cache images | |
| run: | | |
| ./.github/workflows/scripts/gcp-delete-old-cache-images.sh | |
| # We're using a generic approach here, which allows multiple registries to be included, | |
| # even those not related to GCP. Enough reason to create a separate job. | |
| # | |
| # The same artifacts are used for both mainnet and testnet. | |
| clean-registries: | |
| name: Delete unused artifacts in registry | |
| runs-on: ubuntu-latest | |
| permissions: | |
| contents: 'read' | |
| id-token: 'write' | |
| steps: | |
| - uses: actions/[email protected] | |
| with: | |
| persist-credentials: false | |
| # Setup gcloud CLI | |
| - name: Authenticate to Google Cloud | |
| id: auth | |
| uses: google-github-actions/[email protected] | |
| with: | |
| workload_identity_provider: '${{ vars.GCP_WIF }}' | |
| service_account: '${{ vars.GCP_DEPLOYMENTS_SA }}' | |
| token_format: 'access_token' | |
| - name: Login to Google Artifact Registry | |
| uses: docker/[email protected] | |
| with: | |
| registry: us-docker.pkg.dev | |
| username: oauth2accesstoken | |
| password: ${{ steps.auth.outputs.access_token }} | |
| # Deletes all images older than $DELETE_IMAGE_HOURS days. | |
| - uses: 'docker://us-docker.pkg.dev/gcr-cleaner/gcr-cleaner/gcr-cleaner-cli' | |
| continue-on-error: true # TODO: remove after fixig https://github.com/ZcashFoundation/zebra/issues/5933 | |
| # Refer to the official documentation to understand available arguments: | |
| # https://github.com/GoogleCloudPlatform/gcr-cleaner | |
| with: | |
| args: >- | |
| -repo=us-docker.pkg.dev/${{ vars.GCP_PROJECT }}/zebra/zebrad-test | |
| -grace=${{ env.DELETE_IMAGE_HOURS }} | |
| -keep=${{ env.KEEP_LATEST_IMAGE_COUNT }} |