Make sure you have an RBAC-enabled Kubernetes cluster ready (since Kubernetes 1.6, RBAC is enabled by default) and kubectl and helm configured to manage the cluster resources. 

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/psp

Verify if PodSecurityPolicy needs to be enabled on your cluster by running the kubectl get psp command. If you get a message stating the server doesn't have a resource type "podSecurityPolicies"., then PSP needs to be enabled on your cluster.