Basic Commands

kubectl version                     # Check version
kubectl cluster-info               # Cluster info
kubectl get nodes                  # List nodes
kubectl get pods                   # List pods
kubectl get all                    # All resources
kubectl get namespaces             # List namespaces

Pod Commands

kubectl run mypod --image=nginx         # Create pod
kubectl get pods                        # List pods
kubectl describe pod mypod              # Pod details
kubectl logs mypod                      # View logs
kubectl logs -f mypod                   # Live logs
kubectl exec -it mypod -- bash          # Enter pod
kubectl delete pod mypod                # Delete pod
kubectl port-forward mypod 8080:80      # Access locally

Service Commands

kubectl get svc                         # List services
kubectl expose pod mypod --port=80 --type=NodePort
kubectl describe svc myservice          # Service details
kubectl delete svc myservice            # Delete service

Deployment Commands

kubectl create deployment myapp --image=nginx
kubectl get deployments
kubectl describe deployment myapp
kubectl scale deployment myapp --replicas=3
kubectl rollout status deployment myapp
kubectl rollout history deployment myapp
kubectl rollout undo deployment myapp
kubectl delete deployment myapp

YAML / Apply Commands (Most Important )

kubectl apply -f deployment.yaml
kubectl apply -f service.yaml
kubectl delete -f deployment.yaml
kubectl get -f deployment.yaml

ConfigMap & Secret

kubectl create configmap myconfig --from-literal=key=value
kubectl get configmaps
kubectl describe configmap myconfig

kubectl create secret generic mysecret --from-literal=password=123
kubectl get secrets
kubectl describe secret mysecret

Volume (PV / PVC)

kubectl get pv
kubectl get pvc
kubectl describe pv mypv
kubectl describe pvc mypvc
kubectl delete pvc mypvc

Node Commands

kubectl get nodes
kubectl cordon node-name         # Mark unschedulable
kubectl drain node-name          # Drain node
kubectl uncordon node-name       # Enable scheduling

Monitoring & Debugging

kubectl top nodes
kubectl top pods
kubectl get events
kubectl describe pod mypod

Namespace Commands

kubectl create namespace dev
kubectl get namespaces
kubectl config set-context --current --namespace=dev
kubectl delete namespace dev

Advanced / Corporate Commands

kubectl edit deployment myapp
kubectl patch deployment myapp -p '{"spec":{"replicas":5}}'
kubectl label pod mypod env=prod
kubectl get pods -o wide
kubectl get pods -o yaml
kubectl apply -k ./kustomize

Interview Quick Lines

👉 kubectl get pods → list pods
👉 kubectl apply -f → create/update resources
👉 kubectl logs → check logs
👉 kubectl exec → access container

Pro Tips

✔ -n dev → specific namespace
✔ -o wide → detailed output
✔ -f → file apply
✔ --watch → live changes

Final Line

👉 Kubernetes = container orchestration king 👑
👉 Docker + Kubernetes = complete DevOps stack