Information
Reject creating pods that do not match Pod Security Policies.
Rationale:
A Pod Security Policy is a cluster-level resource that controls the actions that a pod can perform and what it has the ability to access. The 'PodSecurityPolicy' objects define a set of conditions that a pod must run with in order to be accepted into the system. Pod Security Policies are comprised of settings and strategies that control the security features a pod has access to and hence this must be used to control pod access permissions.
Solution
Follow the documentation and create Pod Security Policy objects as per your environment. Then, edit the API server pod specification file '/etc/kubernetes/manifests/kube-apiserver.yaml' on the master node and set the '--admission-control' parameter to a value that includes 'PodSecurityPolicy':
--admission-control=...,PodSecurityPolicy,...
Then restart the API Server.
Impact:
The policy objects must be created and granted before pod creation would be allowed.