Kubernetes Commands

 

Kubernetes Commands

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Kubernetes provides the kubectl command-line tool to interact with clusters. Below are some commonly used commands with examples to help you manage resources effectively.

1. List Resources

To view resources like pods, services, or nodes:

kubectl get pods

kubectl get services

kubectl get nodes

Use -o wide for detailed output:

kubectl get pods -o wide

2. Create Resources

Create resources using YAML files or directly via commands:

kubectl create -f deployment.yaml

kubectl run nginx --image=nginx --port=80

3. Apply Changes

Apply or update configurations from a file:

kubectl apply -f config.yaml

4. Delete Resources

Delete specific resources or all of a type:

kubectl delete pod my-pod

kubectl delete pods --all

5. View Resource Details

Get detailed information about a resource:

kubectl describe pod my-pod

6. Logs and Debugging

View logs of a pod or container:

kubectl logs my-pod

kubectl logs -f my-pod # Stream logs

Execute commands inside a container:

kubectl exec -it my-pod -- /bin/bash

7. Scaling and Rollouts

Scale deployments or manage rollouts:

kubectl scale deployment my-deployment --replicas=3

kubectl rollout status deployment/my-deployment

8. Copy Files

Copy files between host and container:

kubectl cp /local/path pod-name:/container/path

These commands are essential for managing Kubernetes clusters efficiently¹².