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Performance and debugging
DevOps Engineer
Performance and debugging questions
16 questions on Performance and debugging for devops engineers, easiest first.
Easy
3
Logs from a crashed container
easy
502 vs 504 errors
easy
Seeing why a Pod is not starting
easy
Medium
8
ImagePullBackOff from a private registry
medium
Exit code 137
medium
Helm says another operation is in progress
medium
df says full, du says not
medium
Service with zero endpoints
medium
Checking a ServiceAccount permission
medium
Debugging a container with no shell
medium
Events gone the next morning
medium
Hard
5
Throttled at 30 percent CPU
hard
Slow external DNS in Pods
hard
Java Pod OOMKilled with free heap
hard
App fails every hour on DB auth
hard
Restart delay in CrashLoopBackOff
hard
