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Kubernetes General Commands

Cluster Information​

  • Check cluster info: 
    kubectl cluster-info
  • View all nodes in the cluster: 
    kubectl get nodes
  • Describe a specific node: 
    kubectl describe node <node-name>
  • Get the current context: 
    kubectl config current-context
  • List all contexts: 
    kubectl config get-contexts
  • Switch to a different context: 
    kubectl config use-context <context-name>

Pod Management​

  • List all pods in the default namespace: 
    kubectl get pods
  • List pods in a specific namespace: 
    kubectl get pods -n <namespace>
  • Get detailed information about a pod: 
    kubectl describe pod <pod-name>
  • Get logs from a pod: 
    kubectl logs <pod-name>
  • Get logs from a specific container in a pod: 
    kubectl logs <pod-name> -c <container-name>
  • Execute a command inside a running pod: 
    kubectl exec -it <pod-name> -- /bin/sh

Deployment Management​

  • List all deployments: 
    kubectl get deployments
  • Describe a deployment: 
    kubectl describe deployment <deployment-name>
  • Scale a deployment: 
    kubectl scale deployment <deployment-name> --replicas=<num>
  • Rollout status of a deployment: 
    kubectl rollout status deployment <deployment-name>
  • Rollback a deployment to a previous version: 
    kubectl rollout undo deployment <deployment-name>

Service Management​

  • List all services: 
    kubectl get services
  • Describe a service: 
    kubectl describe service <service-name>
  • Expose a deployment as a service: 
    kubectl expose deployment <deployment-name> --type=LoadBalancer --port=80
  • Port-forward a service to local machine: 
    kubectl port-forward svc/<service-name> <local-port>:<service-port>

Namespace Management​

  • List all namespaces: 
    kubectl get namespaces
  • Create a namespace: 
    kubectl create namespace <namespace-name>
  • Delete a namespace: 
    kubectl delete namespace <namespace-name>

ConfigMap & Secret Management​

  • List all ConfigMaps: 
    kubectl get configmaps
  • List all Secrets: 
    kubectl get secrets
  • Create a Secret from a file: 
    kubectl create secret generic <secret-name> --from-file=<path-to-file>

Persistent Volume Management​

  • List all Persistent Volumes (PV): 
    kubectl get pv
  • List all Persistent Volume Claims (PVC): 
    kubectl get pvc

Resource Cleanup​

  • Delete a pod: 
    kubectl delete pod <pod-name>
  • Delete a deployment: 
    kubectl delete deployment <deployment-name>
  • Delete a service: 
    kubectl delete service <service-name>
  • Delete all resources in a namespace: 
    kubectl delete all --all -n <namespace>

Debugging & Troubleshooting​

  • Get events in a namespace: 
    kubectl get events -n <namespace>
  • Debug a failing pod: 
    kubectl debug pod/<pod-name> --image=busybox -it
  • Show the live resource changes: 
    kubectl get pods --watch