Kubectl is a powerful command-line interface for running commands against Kubernetes clusters. Below are some commonly used kubectl commands:
Please note that this is not a comprehensive list of all possible kubectl commands. Some commands may have been omitted for brevity and clarity. As always, use the kubectl –help or kubectl <command> –help command to see more details about a specific command.
- Basic kubectl Commands:
kubectl version– Print the client and server version information.kubectl cluster-info– Display information about the cluster.kubectl config view - Show the kubeconfig settings.kubectl config use-context [context]- Switch to another kubeconfig context.kubectl config current-context- Show the current context.kubectl config set-context --current --namespace=[namespace]- Set a default namespace for the current context.
- Kubectl Commands for Interacting with Resources:
kubectl get [resource-type]- List resources of a specific type.kubectl describe [resource-type/resource-name]- Show detailed information about a resource.kubectl logs [pod-name]- Print the logs for a container in a pod.kubectl exec -it [pod-name] -- [command]- Execute a command on a container in a pod.kubectl port-forward [pod-name] [local-port:pod-port]- Forward a local port to a port on the pod.
Also Read: How to Set Up an EKS Cluster with eksctl command line
- Kubectl Commands for Managing Resources:
kubectl create -f [file-name.yaml]- Create a resource from a file.kubectl apply -f [file-name.yaml]- Apply a configuration to a resource.kubectl delete -f [file-name.yaml]- Delete a resource defined in a file.kubectl delete [resource-type/resource-name]- Delete a resource.
- Kubectl Commands for Debugging:
kubectl logs -f [pod-name]- Stream pod logs.kubectl exec -it [pod-name] -- /bin/bash- Start a bash session in a pod.kubectl top pod [pod-name]- Show metrics for a specific pod.
Also Read: Commonly Used Docker Commands Cheat Sheet
- Kubectl Advanced Commands:
kubectl scale --replicas=[num] [resource-type/resource-name]- Scale a resource.kubectl rollout status [resource-type/resource-name]- Check the status of a resource rollout.kubectl rollout undo [resource-type/resource-name]- Roll back a resource to the previous version.kubectl rollout history [resource-type/resource-name]- Show the history of rollouts for a resource.kubectl label [resource-type/resource-name] key=value- Add a label to a resource.kubectl annotate [resource-type/resource-name] key=value- Add an annotation to a resource.
Remember to replace [resource-type], [resource-name], [pod-name], [num], [file-name.yaml], [context], [namespace], [command], [local-port], and [pod-port] with appropriate values based on your specific use case.