John is frustrated. He can access the cluster, but he is not permitted to perform any operation. He cannot even list the Pods. Naturally, he asked us to be more generous and allow him to "play" with our cluster.
Since we are not taking anything for granted, we decided that the first action should be to verify John's claim. Is it true that he cannot even retrieve the Pods running inside the cluster?
Before we move further, we'll stop impersonating John and go back to using the cluster with god-like administrative privileges granted to the minikube user.
kubectl config use-context minikube kubectl get all
Now that we switched to the minikube context (and the minikube user), we regained full permissions, and kubectl get all returned all the objects from the default Namespace.
Let's verify that John indeed cannot...