[OpenStack] How to display keystone version?

Hi,
Im trying to find out which keystone version is installed.
Following commands failed:

Code:# keystone
-bash: keystone: command not found

# openstack catalog show keystone
+-----------+-----------------------------------------------------------------+
| Field | Value |
+-----------+-----------------------------------------------------------------+
| endpoints | RegionOne |
| | admin: https://playground-internal-test.mylab.net:35357 |
| | RegionOne |
| | internal: https://playground-internal-test.mylab.net:5000 |
| | RegionOne |
| | public: https://playground-cic-test.mylab.net:5000 |
| | |
| id | 730592429f524b9c9b8a1ad471f90f0c |
| name | keystone |
| type | identity |
+-----------+-----------------------------------------------------------------+However by looking in openrc I can see:
Code:export OS_IDENTITY_API_VERSION=3and in the installed packages I have found:
Code:python-keystoneauth1 3.1.1-1~u16.04So, roughly I would assume it is version 3
However, how to truly verify it?