Make sure you have an RBAC-enabled Kubernetes cluster ready (since Kubernetes 1.6, RBAC is enabled by default) and that kubectl and helm have been configured so that you can manage the cluster resources. Creating private keys will also require that you have the openssl tool before you attempt to create keys for users.

Clone the k8sdevopscookbook/src repository to your workstation to use the manifest files IN the chapter9 directory, as follows:

$ git clone https://github.com/k8sdevopscookbook/src.git
$ cd src/chapter9/rbac

RBAC is enabled by default starting with Kubernetes 1.6. If it is disabled for any reason, start the API server with --authorization-mode=RBAC to enable RBAC.