$ juju scp openrc openstack-dashboard/0:/home/ubuntu/ && juju run --unit openstack-dashboard/0 "source /home/ubuntu/openrc && keystone user-list"
+----------------------------------+-----------------+---------+----------------+
|                id                |       name      | enabled |     email      |
+----------------------------------+-----------------+---------+----------------+
| 0bfa40e9b6334c2f97fcd6ecc80be5ff |      admin      |   True  | juju@localhost |
| 1186675b964b49ffb0ff025c789e5d3f | cinder_cinderv2 |   True  | juju@localhost |
| 1c77c3cda35042cfa889b044bd8044c5 |      glance     |   True  | juju@localhost |
| e001cbd79ded42db83942be44c116e42 |       nova      |   True  | juju@localhost |
| a6152c954416449bb59262f0d1e549b2 |     quantum     |   True  | juju@localhost |
| 7223050ed00f48129c2e7ea5226cf074 |      swift      |   True  | juju@localhost |
+----------------------------------+-----------------+---------+----------------+
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
b3:4e:ed:f9:d6:11:77:0b:e7:01:0f:ce:c2:1f:8d:4a.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /root/.ssh/known_hosts:1
  remove with: ssh-keygen -f "/root/.ssh/known_hosts" -R 10.0.0.52
Keyboard-interactive authentication is disabled to avoid man-in-the-middle attacks.