On all Storm nodes, change ownership of the conf directory from storm to root:

sudo chown -R root:hadoop /etc/storm/conf

This restricts access to the worker-launcher.cfg file in the conf directory. Users can still modify and update Storm configuration properties, because Ambari runs as root.

Make sure all users who are going to deploy topologies have a UNIX account on all of the Storm nodes. Workers will run under the UNIX account for topologies deployed by the user.

Example: For user testuser1 and principal testuser1/c6401.ambari.apache.org, make sure there is a corresponding testuser1 UNIX account.

Add the following configuration under "Custom storm-site" in the Ambari Storm configuration screen:

supervisor.run.worker.as.user : true

Restart Storm components.