Execute and manage Kubernetes clusters via kubectl commands. Query resources, deploy applications, debug containers, manage configurations, and monitor cluster health. Use when working with Kubernetes
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Execute Kubernetes cluster management operations using the
kubectlThis skill enables agents to:
~/.kube/configmacOS:
brew install kubernetes-cli
Linux:
apt-get install -y kubectl # Ubuntu/Debian yum install -y kubectl # RHEL/CentOS
Verify:
kubectl version --client kubectl cluster-info # Test connection
kubectl get pods # List all pods in current namespace kubectl get pods -A # All namespaces kubectl get pods -o wide # More columns kubectl get nodes # List nodes kubectl describe pod POD_NAME # Detailed info with events
kubectl logs POD_NAME # Get logs kubectl logs -f POD_NAME # Follow logs (tail -f) kubectl logs POD_NAME -c CONTAINER # Specific container kubectl logs POD_NAME --previous # Previous container logs
kubectl exec -it POD_NAME -- /bin/bash # Interactive shell kubectl exec POD_NAME -- COMMAND # Run single command
kubectl apply -f deployment.yaml # Apply config kubectl create -f deployment.yaml # Create resource kubectl apply -f deployment.yaml --dry-run=client # Test
kubectl set image deployment/APP IMAGE=IMAGE:TAG # Update image kubectl scale deployment/APP --replicas=3 # Scale pods kubectl rollout status deployment/APP # Check status kubectl rollout undo deployment/APP # Rollback
kubectl config view # Show kubeconfig kubectl config get-contexts # List contexts kubectl config use-context CONTEXT # Switch context
# 1. Identify the issue kubectl describe pod POD_NAME2. Check logs
kubectl logs POD_NAME kubectl logs POD_NAME --previous
3. Execute debug commands
kubectl exec -it POD_NAME -- /bin/bash
4. Check events
kubectl get events --sort-by='.lastTimestamp'
# 1. Update image kubectl set image deployment/MY_APP my-app=my-app:v22. Monitor rollout
kubectl rollout status deployment/MY_APP -w
3. Verify
kubectl get pods -l app=my-app
4. Rollback if needed
kubectl rollout undo deployment/MY_APP
# 1. Drain node (evicts all pods) kubectl drain NODE_NAME --ignore-daemonsets2. Do maintenance
...
3. Bring back online
kubectl uncordon NODE_NAME
The
--output-otablewidejsonjqyamljsonpathcustom-columnsnameExamples:
kubectl get pods -o json | jq '.items[0].metadata.name' kubectl get pods -o jsonpath='{.items[*].metadata.name}' kubectl get pods -o custom-columns=NAME:.metadata.name,STATUS:.status.phase
-n, --namespace=<ns> # Operate in specific namespace -A, --all-namespaces # Operate across all namespaces --context=<context> # Use specific kubeconfig context -o, --output=<format> # Output format (json, yaml, table, etc.) --dry-run=<mode> # Dry-run mode (none, client, server) -l, --selector=<labels> # Filter by labels --field-selector=<selector> # Filter by fields -v, --v=<int> # Verbosity level (0-9)
--dry-run=client--dry-run=server--dry-run=noneAlways test with
first:--dry-run=client
kubectl apply -f manifest.yaml --dry-run=client
For detailed reference material, command-by-command documentation, troubleshooting guides, and advanced workflows, see:
Use label selectors for bulk operations:
kubectl delete pods -l app=myapp kubectl get pods -l env=prod,tier=backend
Watch resources in real-time:
kubectl get pods -w # Watch for changes
Use
flag for all namespaces:-A
kubectl get pods -A # See pods everywhere
Save outputs for later comparison:
kubectl get deployment my-app -o yaml > deployment-backup.yaml
Check before you delete:
kubectl delete pod POD_NAME --dry-run=client
kubectl help # General help kubectl COMMAND --help # Command help kubectl explain pods # Resource documentation kubectl explain pods.spec # Field documentation
KUBECONFIG:KUBECTL_CONTEXTVersion: 1.0.0
License: MIT
Compatible with: kubectl v1.20+, Kubernetes v1.20+
No automatic installation available. Please visit the source repository for installation instructions.
View Installation Instructions
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