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.opencode/skills/devops/references/kubernetes-kubectl.md

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+# kubectl Essential Commands
+
+## Cluster & Node
+```bash
+kubectl cluster-info
+kubectl get nodes
+kubectl describe node <node-name>
+kubectl top nodes
+kubectl drain <node-name> --ignore-daemonsets
+kubectl uncordon <node-name>
+```
+
+## Pod Operations
+```bash
+kubectl get pods -A                     # All namespaces
+kubectl get pods -o wide                # Extended info
+kubectl describe pod <pod-name>
+kubectl logs <pod-name>
+kubectl logs -f <pod-name>              # Follow
+kubectl logs --previous <pod-name>      # Previous crash
+kubectl exec -it <pod-name> -- /bin/bash
+```
+
+## Deployment
+```bash
+kubectl apply -f manifest.yaml
+kubectl apply -f ./manifests/
+kubectl apply -f manifest.yaml --dry-run=client -o yaml  # Preview
+kubectl set image deployment/myapp app=myapp:v2
+kubectl delete -f manifest.yaml
+```
+
+## Service & Network
+```bash
+kubectl port-forward service/myapp 8080:8080
+kubectl get svc
+kubectl exec -it <pod-name> -- curl http://service:8080
+kubectl exec -it <pod-name> -- nslookup kubernetes.default
+```
+
+## Debugging (Get → Describe → Logs)
+```bash
+kubectl get pods -o wide
+kubectl get events -n <ns> --sort-by='.lastTimestamp'
+kubectl describe pod <pod-name>
+kubectl logs <pod-name> -c <container>
+```
+
+## Output & Filtering
+```bash
+kubectl get pods -o json
+kubectl get pods -o yaml
+kubectl get pods -l app=myapp,tier=frontend
+kubectl get pods --field-selector=status.phase=Running
+kubectl get pods -w                     # Watch
+```
+
+## Flags
+
+| Flag | Purpose |
+|------|---------|
+| `-n` | Namespace |
+| `-A` | All namespaces |
+| `-o` | Output format |
+| `-l` | Label selector |
+| `-w` | Watch |
+
+## Aliases
+```bash
+alias k='kubectl'
+alias kgp='kubectl get pods'
+alias kd='kubectl describe'
+alias kl='kubectl logs'
+```