Pod Security Policies are objects that control security-sensitive aspects of pod specification (like root privileges).
Adding a Default Pod Security Policy
When you create a new cluster with RKE, you can configure it to apply a PSP immediately. As you create the cluster, use the Cluster Options to enable a PSP. The PSP assigned to the cluster will be the default PSP for projects within the cluster.
Create a Pod Security Policy within Rancher. Before you can assign a default PSP to a new cluster, you must have a PSP available for assignment. For instruction, see Creating Pod Security Policies.
For security purposes, we recommend assigning a PSP as you create your clusters.
To enable a default Pod Security Policy, set the Pod Security Policy Support option to Enabled, and then make a selection from the Default Pod Security Policy drop-down.
When the cluster finishes provisioning, the PSP you selected is applied to all projects within the cluster.