melvynx kubectl
Setup
brew install kubectl
Verify installation:
kubectl version --client
Use -o json or -o yaml for machine-readable output.
Authentication
kubectl config use-context <context-name>
Resources
Viewing Resources
| Command | Description |
|---|---|
kubectl get pods |
List all pods in current namespace |
kubectl get pods -A |
List pods across all namespaces |
kubectl get pods -o wide |
List pods with additional details |
kubectl get services |
List all services |
kubectl get deployments |
List all deployments |
kubectl get nodes |
List cluster nodes |
kubectl get namespaces |
List all namespaces |
kubectl get all |
List all resources in current namespace |
kubectl get ingress |
List all ingress resources |
kubectl get configmaps |
List all config maps |
kubectl get secrets |
List all secrets |
Describing Resources
| Command | Description |
|---|---|
kubectl describe pod <name> |
Show detailed pod info |
kubectl describe service <name> |
Show detailed service info |
kubectl describe deployment <name> |
Show detailed deployment info |
kubectl describe node <name> |
Show detailed node info |
Creating and Applying
| Command | Description |
|---|---|
kubectl apply -f <file.yaml> |
Apply a configuration from file |
kubectl apply -f <directory>/ |
Apply all configs from a directory |
kubectl apply -k <directory>/ |
Apply a kustomize configuration |
kubectl create namespace <name> |
Create a namespace |
kubectl create secret generic <name> --from-literal=key=value |
Create a secret |
Deleting Resources
| Command | Description |
|---|---|
kubectl delete pod <name> |
Delete a pod |
kubectl delete -f <file.yaml> |
Delete resources defined in file |
kubectl delete deployment <name> |
Delete a deployment |
kubectl delete namespace <name> |
Delete a namespace and all its resources |
Logs and Debugging
| Command | Description |
|---|---|
kubectl logs <pod> |
View pod logs |
kubectl logs -f <pod> |
Follow pod logs |
kubectl logs <pod> -c <container> |
View logs for a specific container |
kubectl logs --tail=100 <pod> |
View last 100 lines of logs |
kubectl exec -it <pod> -- bash |
Open a shell in a pod |
kubectl exec <pod> -- <command> |
Run a command in a pod |
kubectl port-forward <pod> 8080:80 |
Forward local port to pod |
kubectl port-forward svc/<service> 8080:80 |
Forward local port to service |
Scaling and Rollouts
| Command | Description |
|---|---|
kubectl scale deployment <name> --replicas=3 |
Scale a deployment |
kubectl rollout status deployment <name> |
Check rollout status |
kubectl rollout history deployment <name> |
View rollout history |
kubectl rollout undo deployment <name> |
Rollback to previous revision |
kubectl rollout restart deployment <name> |
Restart a deployment |
Context and Config
| Command | Description |
|---|---|
kubectl config get-contexts |
List all contexts |
kubectl config current-context |
Show current context |
kubectl config use-context <name> |
Switch to a context |
kubectl config set-context --current --namespace=<ns> |
Set default namespace for current context |
Global Flags
| Flag | Description |
|---|---|
-n <namespace> |
Specify namespace |
-o json |
Output as JSON |
-o yaml |
Output as YAML |
-o wide |
Output with additional info |
--dry-run=client |
Preview without applying |
-l <key>=<value> |
Filter by label |
--all-namespaces or -A |
Across all namespaces |