2653 questions · 63 companies · 53 topics

DevOps exercises &
interview questions

Read a real interview question, write your answer, then reveal the solution.

Mid·Linux·Google

Detect a memory leak by watching RSS
AnswerSort processes by resident memory, watch the node process's RSS climb over time, then kill it.
Solutionps -eo pid,rss,comm --sort=-rss | head → re-sample to confirm RSS keeps growing (a leak, not a spike) → kill <pid>

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Kubernetes

Is it possible to delete ReplicaSet without deleting the Pods it created?
Answer Yes, delete the ReplicaSet using the orphan cascade policy, which leaves its Pods running.

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