Kubernetes kubectl Commands

 

🔧 1. Cluster Info and Context

kubectl cluster-info                       # Display cluster endpoint info
kubectl config get-contexts                # List contexts
kubectl config use-context <context-name>  # Switch to a specific context
kubectl get nodes                          # List all worker/master nodes
kubectl describe node <node-name>          # Detailed info about a node

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📦 2. Pods

kubectl get pods                           # List all pods in the current namespace
kubectl get pods -A                        # List all pods in all namespaces
kubectl describe pod <pod-name>            # Show detailed info about a pod
kubectl logs <pod-name>                    # View logs of a pod
kubectl logs -f <pod-name>                 # Stream logs
kubectl exec -it <pod-name> -- /bin/bash   # Get shell access inside a pod
kubectl delete pod <pod-name>              # Delete a pod

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🚀 3. Deployments

kubectl get deployments                    # List deployments
kubectl describe deployment <name>         # Show details of a deployment
kubectl apply -f <deployment.yaml>         # Apply/update deployment from YAML
kubectl rollout restart deployment <name>  # Restart the deployment
kubectl delete deployment <name>           # Delete a deployment

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📡 4. Services

kubectl get svc                            # List services in current namespace
kubectl get svc -A                         # List services in all namespaces
kubectl describe svc <service-name>        # Show detailed info about a service
kubectl port-forward svc/<name> <local-port>:<svc-port>  # Forward port

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📂 5. Namespaces

kubectl get namespaces                     # List all namespaces
kubectl create namespace <name>            # Create a new namespace
kubectl delete namespace <name>            # Delete a namespace

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🔄 6. ConfigMaps & Secrets

kubectl get configmaps                     # List ConfigMaps
kubectl describe configmap <name>          # View ConfigMap details
kubectl get secrets                        # List Secrets
kubectl describe secret <name>             # View Secret details

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🌐 7. Ingress

kubectl get ingress                        # List Ingress resources
kubectl describe ingress <name>            # Detailed info about an Ingress

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📄 8. Apply/Update/Delete YAML

kubectl apply -f <file.yaml>               # Create or update resources
kubectl delete -f <file.yaml>              # Delete resources from file
kubectl create -f <file.yaml>              # Strictly create resources (error if exists)

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🧠 9. Debugging / Events

kubectl get events                         # View recent events in cluster
kubectl describe <resource> <name>         # Show detailed info (works with pods, svc, etc.)

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📋 10. Miscellaneous

kubectl top pod                            # View CPU/memory usage (metrics-server required)
kubectl top node                           # View resource usage of nodes
kubectl api-resources                      # List all supported resource types
kubectl explain <resource>                 # Get documentation on a resource (e.g. deployment)