Kubernetes Commands

 Print the address of the control plane and cluster services

kubectl cluster-info

Get output from running pod mypod using the first container by default

kubectl attach mypod

Get output from ruby-container from pod mypod

kubectl attach mypod -c ruby-container

Get output from the first pod of a ReplicaSet named nginx

kubectl attach rs/nginx

Switch to raw terminal mode, sends stdin to "bash" in ruby-container from pod mypod # and sends stdout/stderr from "bash" back to the client

kubectl attach mypod -c ruby-container -i -t

Check to see if I can create pods in any namespace

kubectl auth can-i create pod --all-namespaces

Check to see if I can access the URL /logs

kubectl auth can-i get /logs

Check to if I can read pod logs

kubectl auth can-i list jobs.batch/bar -n foo

Check to see if I can do everything in my current namespace ("*" means all)

kubectl auth can-i '*' '*'

Create a ClusterRoleBinding for user1, user2 and group1 using the cluster-admin ClusterRole

kubectl create clusterrolebinding cluster-admin --clusterrole=cluster-admin --user=user1 --user2=user2 --group=group1

Create a ClusterRole named "pod-reader" that allows user to perform "get", "watch" and "list" on pods

kubectl create clusterrole pod-reader --berb=get, list,watch --resource=pods

Create a ClusterRole name "foo" with NonResouceURL specified

kubectl creat clusterrole "foo" --verb=get --non-resource-url=/logs/*

Create a ClusterRole named "foo" with API Group Specific

Kubectl create clusterrole foo --verb=get, list, watch --resource=rs.extensions

----------------

# kubectl create -f deployment.yaml

# kubectl get deployments

# kubectl get pods

# kubectl describe deployment my-deployment

# kubectl get all

--------

=> Services - NodePort

# kubectl create -f service-definition.yml

  Service "myapp-service" created

# kubectl get services