Interview prep

DevOps Interview Questions

DevOps interviews evaluate delivery pipelines, infrastructure automation and how you handle production incidents.

Questions and answers

01What does a good CI/CD pipeline look like?

Fast feedback on every commit, artefacts built once and promoted across environments, automated tests gating deploys, and a one-command rollback.

02Blue/green vs canary deployments?

Blue/green swaps all traffic between two full environments — simple rollback, double the infrastructure. Canary shifts a small traffic percentage and watches metrics before ramping.

03How do you manage secrets in a pipeline?

A dedicated secret store with short-lived credentials injected at runtime, never committed values, and OIDC federation instead of static cloud keys.

04What do you do first during an outage?

Mitigate before diagnosing: roll back or shift traffic, communicate status, then investigate root cause once customers are stable.

05What metrics tell you delivery is healthy?

The DORA four: deployment frequency, lead time for changes, change failure rate and mean time to restore.

How to answer these well

Interviewers are not grading recall — they are checking whether you've hit the failure mode the question describes. Anchor every answer to something you actually shipped or debugged with DevOps.

Say the trade-off out loud. "I'd use X here, but it costs Y under Z conditions" scores higher than a clean textbook definition every time.

Roles asking for DevOps

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