Practical game day scenarios for CI/CD: broken rollbacks, permission issues, and slow feedback loops—and how we fixed them.

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What We Learned Running Weekly Game Days on Our CI/CD Pipeline

Most teams say they have a CI/CD pipeline; fewer can explain what happens when a deploy half-fails on a Friday night.

Game Day Scenario: Rollback That Never Rolls Back #

We simulated a bad deploy by merging a PR that intentionally broke a health check.

Observed:

The canary failed, alerts fired, but the pipeline stopped for manual intervention.
On-call engineers had different mental models of how rollback should work.

Fixes:

We made rollback a first-class job in the pipeline:

```yaml jobs: deploy_prod: steps: - run: ./scripts/deploy.sh rollback_prod: if: failure() steps: - run: ./scripts/rollback.sh ```

We documented one canonical rollback path per service.

Game Day Scenario: Missing Permissions #

In another exercise, we revoked a service account permission in staging.

The deploy failed halfway through, leaving stale pods.
Logs showed a generic “Forbidden” error; the pipeline reported only “step failed”.

Changes:

We added structured logging around each infra call.
We taught the pipeline to surface the exact failing command and principal.

Takeaways #

Run game days regularly; don’t wait for production to teach you.
Practice rollback as much as you practice deploy.
Make pipeline failures boring and obvious, not puzzles.

What We Learned Running Weekly Game Days on Our CI/CD Pipeline

What We Learned Running Weekly Game Days on Our CI/CD Pipeline

Game Day Scenario: Rollback That Never Rolls Back #

Game Day Scenario: Missing Permissions #

Takeaways #

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About Kiril urbonas

What We Learned Running Weekly Game Days on Our CI/CD Pipeline

Game Day Scenario: Rollback That Never Rolls Back#

Game Day Scenario: Missing Permissions#

Takeaways#

Stay Updated

Architecture Review: Cloud Disaster Recovery Runbook Design

Fine-tuning vs Few-Shot Learning: When to Use Each Approach

More from DevOps

Artifact Promotion Instead of Rebuilds: The Release Control Pattern That Stopped Drift

Blue-Green Deployment Guardrails in Kubernetes: Lessons from a Failed Friday Rollout

GitHub Actions Monorepo CI: How We Cut Build Times Without Breaking Main

About Kiril urbonas

Game Day Scenario: Rollback That Never Rolls Back #

Game Day Scenario: Missing Permissions #

Takeaways #