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Container and K8s Debugging - Troubleshooting Scenarios | DevOps/SRE Interview Prep | Repovive

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DevOps/SRE Interview Prep16 sections · 139 units8h total

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Container and K8s Debugging

Pod and cluster issues

Scenario: Pods are crashing or not scheduling.

Debugging toolkit:

kubectl get pods -o wide
kubectl describe pod <name>
kubectl logs <pod> --previous
kubectl get events --sort-by='.lastTimestamp'
kubectl top pods

Common issues:

Pending: Resource constraints, node selector, PVC issues
CrashLoopBackOff: App crashes on start (check logs)
ImagePullBackOff: Wrong image or registry auth
OOMKilled: Container exceeded memory limits

Interview tip: Start with kubectl describe for events and conditions. Then check logs. Most issues are visible in events.