Update kubectl.md

contents/cheatsheets/kubectl.md

@@ -1,3 +1,45 @@
 # Kubernetes kubectl CLI Cheatsheet
 
+#### Basic Pod Definition
+```
+apiVersion: v1
+kind: pod
+metadata:
+    name: my_pod
+    label: 
+	  app: nginx
+	  tier: frontend
+spec:
+   containers: 
+	  - name: my-container
+	    image: mynginx
+```
+kubectl create deployment deploy --image=nginx --port=80 -- Imperative way to create deployment file
+
+kubectl get resources -- to view resources
+
+kubectl get svc or service -- to view current services in cluster
+
+kubectl describe po pod_name -- to view complete details of pod
+
+kubectl get pods -- to show running pods in cluster
+
+kubectl get pods -o wide 
+
+kubectl describe po mypod
+
+kubectl get pod mypod -o yaml
+
+kubectl get pods --show-labels
+
+kubectl scale --replicas=3 -f deploy.yaml -- to create replicas for any deployment 
+
+kubectl scale --current-replicas=2 --replicas=3 -f deployment/mysql -- to scale up the replicas.. 
+
+kubectl rollout undo deployment/frontend -- Rollback to the previous deployment
+
+kubectl rollout undo deployment/frontend --to-revision=2  -- Roll back to specific version
+
+kubectl apply -f ./manifest.yaml -- To apply changes for the manifest file	
+
 To be completed.