`kubectl`

kubectl (pronounced “cube control”, “kube cuddle”, or “kube C-T-L”) is the command-line tool used to interact with a Kubernetes cluster.

It allows you to deploy, manage, inspect, and troubleshoot applications and resources in Kubernetes.

Common Commands

Command	Description
`kubectl get pods`	List all pods in the current namespace
`kubectl get svc`	List all services
`kubectl get nodes`	List all nodes in the cluster
`kubectl describe pod <name>`	Show detailed info about a specific pod
`kubectl logs <pod>`	Show logs from a pod
`kubectl apply -f <file.yaml>`	Apply configuration from a YAML file
`kubectl delete -f <file.yaml>`	Delete resources defined in a YAML file
`kubectl exec -it <pod> -- bash`	Open a shell inside a running pod
`kubectl scale deployment <name> --replicas=3`	Scale a deployment

Common Flags

Flag	Usage Example	Purpose
`-n` or `--namespace`	`kubectl get pods -n kube-system`	Target a specific namespace
`-o`	`kubectl get pods -o wide`	Output format (e.g., `json`, `yaml`, `wide`)
`--watch`	`kubectl get pods --watch`	Continuously watch for changes
`-f`	`kubectl apply -f config.yaml`	Use a file (YAML or JSON)

Example: Deploy an App


kubectl apply -f deployment.yaml

This might deploy a Deployment and Service defined in the YAML file.

Pro Tips

Use kubectl explain <resource> to learn what a resource is and its fields:
```
kubectl explain pod.spec.containers
```
Use kubectl get all to get everything (pods, services, deployments, etc.).