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Kubernetes Basic Commands

Kubernetes is a container orchestration platform used to automate deployment, scaling, and lifecycle management of containerized applications. Below is a curated list of essential kubectl commands useful for daily DevOps and platform engineering tasks.

1. Cluster & Context Management

Command Description
kubectl version --short Display client and server versions
kubectl cluster-info Show Kubernetes master and service endpoints
kubectl config view View kubeconfig configuration
kubectl config get-contexts List all available contexts
kubectl config use-context <context-name> Switch context between clusters
kubectl get nodes List worker and control plane nodes

2. Pods

Command Description
kubectl get pods List pods in the current namespace
kubectl get pods -A List pods across all namespaces
kubectl describe pod <pod-name> Show detailed information about a pod
kubectl logs <pod-name> Retrieve logs from a pod
kubectl logs <pod-name> -c <container-name> Retrieve logs from a specific container
kubectl exec -it <pod-name> -- /bin/bash Open interactive shell inside a pod
kubectl delete pod <pod-name> Delete a pod

3. Deployments

Command Description
kubectl create deployment <name> --image=<image> Create a deployment
kubectl get deployments List deployments
kubectl describe deployment <name> Show deployment details
kubectl scale deployment <name> --replicas=<num> Scale a deployment
kubectl set image deployment/<name> <container>=<image> Update container image within deployment
kubectl rollout status deployment/<name> Check deployment rollout status
kubectl rollout undo deployment/<name> Roll back to previous deployment version
kubectl delete deployment <name> Delete a deployment

4. Services

Command Description
kubectl get svc List services
kubectl expose deployment <name> --type=NodePort --port=<port> Expose deployment as a service
kubectl describe svc <name> Show service details
kubectl delete svc <name> Delete a service

5. Namespaces

Command Description
kubectl get ns List namespaces
kubectl create namespace <name> Create a namespace
kubectl delete namespace <name> Delete a namespace

6. ConfigMaps & Secrets

Command Description
kubectl create configmap <name> --from-literal=<key>=<value> Create a ConfigMap
kubectl get configmaps List ConfigMaps
kubectl describe configmap <name> Show ConfigMap details
kubectl create secret generic <name> --from-literal=<key>=<value> Create a Secret
kubectl get secrets List Secrets
kubectl describe secret <name> Show Secret details

7. Cleanup Operations

Command Description
kubectl delete all --all Delete all resources in a namespace
kubectl delete -f <file>.yaml Delete resources defined in a YAML file

8. Working with YAML Manifests

Applying and deleting resources from configuration files:

kubectl apply -f <file>.yaml
kubectl delete -f <file>.yaml