ubuntu@ip-10-20-100-90:~$ juju controllers
Use --refresh to see the latest information.

Controller          Model           User   Access     Cloud/Region   Models  Machines    HA  Version
creativedrive-aws*  admin/prm-demo  -      -          aws/us-east-1       2         1  none  2.0.0  
openstack-on-lxd    -               admin  superuser  lxd/localhost       1         1  none  2.0.0  
test-trusty-lxd     mailman         admin  superuser  lxd/localhost       2         3  none  2.0.0