You need to have a Kubernetes cluster, and the kubectl command-line tool must
be configured to communicate with your cluster. If you do not already have a
cluster, you can create one by using
[minikube](/docs/tasks/tools/#minikube)
or you can use one of these Kubernetes playgrounds:

* [Katacoda](https://www.katacoda.com/courses/kubernetes/playground)
* [Play with Kubernetes](http://labs.play-with-k8s.com/)