title: Grant privileges to specific namespaces for every user
body: <p>I have bunch of users. Every user should be able to create/change/delete substances in namespaces like <code>*-stage</code>. Namespaces can be added or removed dynamically. I can create ServiceAccount in every namespace and grant privileges.</p>
  
  <p>I created pod in k8s and install kubectl and ssh into it. So every user has access to this pod and can use kubectl. I know that I can mount ServiceAccount secrets to pod. As far as I have different ServiceAccounts for every namespace I don't know how to grant privileges to all <code>*-stage</code> namespaces for every user. I don't want to create <code>cluster-admin</code> ClusterRoleBinding for ServiceAccount, cause users should be able to modify only <code>*-stage</code> namespaces. Can you help me please?</p>