Career1. Walk me through a CI/CD pipeline you built.
Why they ask: Shows hands-on automation experience.
How to answer:
- Stages: build, test, security scan, artifact, deploy.
- Tools used and why.
- How you handle rollbacks and approvals.
DevOps Engineer Interview Questions (CI/CD, Kubernetes) with Tips
DevOps interviews test automation, reliability and how you handle production incidents. Show the pipelines and tools you have actually run.
- Walk me through a CI/CD pipeline you built.
- How does Kubernetes keep an application running?
- How do you do a zero-downtime deployment?
- What do you monitor in production?
- Tell me about an incident you led.
- How do you manage secrets and configuration?
2. How does Kubernetes keep an application running?
Why they ask: Core orchestration knowledge.
How to answer:
- Deployments and ReplicaSets keep the desired number of pods.
- Health checks (liveness/readiness) restart or remove bad pods.
- Services and ingress route traffic to healthy pods.
3. How do you do a zero-downtime deployment?
Why they ask: Release engineering maturity.
How to answer:
- Rolling, blue/green or canary releases.
- Health checks and automated rollback.
- Backward-compatible database migrations.
4. What do you monitor in production?
Why they ask: Observability mindset.
How to answer:
- The four golden signals: latency, traffic, errors, saturation.
- Logs, metrics and traces; alert on symptoms users feel.
- Dashboards and runbooks for on-call.
5. Tell me about an incident you led.
Why they ask: Ownership under pressure.
How to answer:
- Impact and how it was detected.
- How you coordinated and communicated.
- Root cause and the blameless post-mortem actions.
6. How do you manage secrets and configuration?
Why they ask: Security awareness.
How to answer:
- Secrets manager or vault, never in the repo.
- Environment-specific config, least-privilege access, rotation.
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