DevOps Interview Questions (with real STAR answers)

Behavioral interviews want a real story, not theory. Here is how to answer the classic "tell me about a time" questions in STAR - using real production incidents you can actually go fix and earn the story yourself.

DevOps interviews mix behavioral questions, technical depth, and real-world problem solving. The strongest answers come from real work you have done - the STAR answers below are built from real production incidents you can go fix yourself.

DevOps behavioral interview questions (STAR answers)

Tell me about a time you debugged a production outage.

Situation: Right after a deploy, the production site started returning 502 Bad Gateway. Users were locked out and the backend was confirmed running, so something between the proxy and the app had broken.
Task: I needed to restore traffic fast and find the actual cause, not just restart things and hope.
Action: I read the nginx error log, traced the upstream connection, and found the proxy was pointed at the wrong port after the deploy. I corrected the upstream config and reloaded nginx.
Result: Traffic recovered within minutes, and I documented the port mismatch so the next deploy would not reintroduce it.

Go earn this story: Fix the Nginx 502 Bad Gateway →

Tell me about a time you automated a manual process.

Situation: Infrastructure had drifted from its Terraform definition because changes were being made by hand, so nobody trusted plan output.
Task: I had to bring the live infrastructure back in line with code so future changes were safe and reviewable.
Action: I inspected the drift, imported and corrected the state, and reconciled the configuration so plan came back clean.
Result: Infrastructure changes went back through version control and review, removing a whole class of surprise outages.

Go earn this story: Reconcile Terraform State Drift →

Tell me about a time you handled an incident under pressure.

Situation: A containerized service was crash-looping on startup and would not stay up, blocking a release.
Task: I needed to get the container to a healthy running state quickly without guessing.
Action: I read the container logs and exit code, found the broken entrypoint and config, and corrected it so the process started cleanly.
Result: The service came up healthy and the release went out, and I captured the failure mode so it would be caught earlier next time.

Go earn this story: Fix a Docker Container That Exits Immediately →

Interview prep FAQ

What questions are asked in a DevOps interview?

Expect behavioral questions (tell me about a hard bug or a time you...), technical questions on CI/CD, Linux, containers, and incident response, and often a real-world or take-home task. Behavioral rounds want concrete stories, which is why practicing on real systems pays off.

How do you answer behavioral interview questions?

Use STAR: Situation, Task, Action, Result. Keep it concrete - a specific incident, what you owned, what you did, and the measurable outcome. The answers above are all structured this way.

How do I prepare for a DevOps interview?

Practice the actual work, not just trivia: CI/CD, Linux, containers, and incident response. Fixing real systems gives you the skills, the specific stories behind strong STAR answers, and a portfolio to point to.

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