In a multi-cluster environment, the user who adds a cluster is automatically designated as the cluster administrator. Additionally, the admin user by default has full permissions in all clusters. In the initial state of a cluster, the aforementioned users can invite other users to join the cluster and set the roles for these users within the cluster.

KubeSphere currently does not support creating custom cluster roles. You can view information about the built-in cluster roles in the KubeSphere web console.