DevOps Interview DropAdvanced TierScenario+50 XP on read
How do you identify the exact deployment that introduced an issue?
#Debugging#Incident Response#CI/CD#Observability
Core Summary
The fastest way is to look at your deployment log and your metrics timeline together. A regression that started 15 minutes ago started because of something that deployed in that window. Check git log, cross-reference with your deployment tracking, verify by commit hash in the running image, and if you need proof, roll back and watch metrics recover.
Hints
Hint 1: Deployments and regressions are almost always correlated
Hint 2: Image digest or container commit hash is your proof
Hint 3: If metrics recover after rollback, you have your culprit
Reported in interviews at Google, Amazon, Meta