add kubernetes cheatsheet

kubernetes-cheatsheet.md

@@ -0,0 +1,48 @@
+# Kubernetes Cheatsheet
+
+## Basics
+- Get cluster info: `kubectl cluster-info`
+- Get nodes: `kubectl get nodes`
+- Get pods: `kubectl get pods`
+- Get all resources: `kubectl get all`
+
+## Contexts and Config
+- View config: `kubectl config view`
+- Set context: `kubectl config use-context <context-name>`
+- Set namespace: `kubectl config set-context --current --namespace=<namespace>`
+
+## Pods
+- Create pod: `kubectl run <pod-name> --image=<image>`
+- Describe pod: `kubectl describe pod <pod-name>`
+- Exec into pod: `kubectl exec -it <pod-name> -- /bin/sh`
+- Logs: `kubectl logs <pod-name>`
+- Delete pod: `kubectl delete pod <pod-name>`
+
+## Deployments
+- Create deployment: `kubectl create deployment <name> --image=<image>`
+- Get deployments: `kubectl get deployments`
+- Scale: `kubectl scale deployment <name> --replicas=<num>`
+- Update image: `kubectl set image deployment/<name> <container>=<new-image>`
+- Delete: `kubectl delete deployment <name>`
+
+## Services
+- Expose deployment: `kubectl expose deployment <name> --type=NodePort --port=80`
+- Get services: `kubectl get services`
+- Describe service: `kubectl describe service <name>`
+- Delete service: `kubectl delete service <name>`
+
+## Namespaces
+- Create namespace: `kubectl create namespace <name>`
+- Get namespaces: `kubectl get namespaces`
+- Delete namespace: `kubectl delete namespace <name>`
+
+## Apply YAML
+- Apply file: `kubectl apply -f <file.yaml>`
+- Delete from file: `kubectl delete -f <file.yaml>`
+
+## Other
+- Port forward: `kubectl port-forward <pod> 8080:80`
+- Get events: `kubectl get events`
+- Proxy API: `kubectl proxy`
+
+For more, refer to official docs: https://kubernetes.io/docs/