2.12.

$ oc policy add-role-to-user -n istio-system --role-namespace istio-system mesh-user <user_name>

apiVersion: maistra.io/v1
kind: ServiceMeshMember
metadata:
  name: default
spec:
  controlPlaneRef:
    namespace: istio-system
    name: basic

$ oc policy add-role-to-user

apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  namespace: istio-system
  name: mesh-users
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: mesh-user
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: User
  name: alice