🔥 Kubernetes Troubleshooting Made Simple! 🔥

Managing workloads on Kubernetes can be tricky — but with the right commands, you can cut debugging time in half. 

Here’s a practical cheatsheet 🛠️ for engineers, SREs, and DevOps teams:

1️⃣ Confirm Cluster & Namespace

 ⚡ kubectl config current-context → check context

 ⚡ kubectl get ns → list namespaces

 ⚡ kubectl get pods -n <namespace> → list pods

2️⃣ Get the Big Picture

 📌 kubectl get nodes → nodes

 📌 kubectl get pods -A → all pods

 📌 kubectl get deployments -A → deployments

 📌 kubectl get events -A --sort-by=.metadata.creationTimestamp → recent events

3️⃣ Inspect Failing Pods

 🔍 kubectl describe pod <pod> -n <ns>

 📜 kubectl logs <pod> -n <ns>

 💡 kubectl exec -it <pod> -n <ns> -- /bin/sh

4️⃣ Probes & Health Checks

 🩺 Readiness & liveness probes → check with kubectl describe

 🩺 Test endpoint inside pod:

 kubectl exec -it <pod> -n <ns> -- curl -sv localhost:<port>/health

5️⃣ Rollouts, History & Recovery

 ⏳ kubectl rollout status deployment/<name> -n <ns>

 📜 kubectl rollout history deployment/<name> -n <ns>

 🔄 kubectl rollout undo deployment/<name> -n <ns>

6️⃣ Networking & Services

 🌐 kubectl get svc -n <ns> → list services

 🔗 kubectl get endpoints -n <ns> → check endpoints

 🧭 kubectl exec -it <pod> -n <ns> -- nslookup <service> → DNS test

 🚪 kubectl port-forward svc/<svc> 8080:80 -n <ns> → local test

7️⃣ Storage Debugging

 💾 kubectl get pvc -n <ns> → list PVCs

 📂 kubectl describe pvc <pvc> -n <ns> → inspect PVC

 ⚠️ Look for mount errors in pod describe

8️⃣ Resources, Logs & Quick Fixes

 📊 kubectl top nodes / kubectl top pods -n <ns> → usage

 📜 Use stern/kubetail → tail logs across pods

 🔄 kubectl rollout restart deployment/<name> -n <ns>

 🔄 kubectl delete pod <pod> -n <ns> → recreate pod

💡 Save this post for your next K8s firefight. Troubleshooting doesn’t have to feel like guesswork — it’s about following a structured checklist.