Upgrade Nova

  1. Stop all Nova resources in Pacemaker:

     pcs resource disable openstack-nova-novncproxy-clone
 pcs resource disable openstack-nova-consoleauth-clone
 pcs resource disable openstack-nova-conductor-clone
 pcs resource disable openstack-nova-api-clone
 pcs resource disable openstack-nova-scheduler-clone

  2. Wait until the output of pcs status shows that the above services have stopped running.

  3. Upgrade the relevant packages:

     yum upgrade 'openstack-nova*' 'python-nova*'

  4. Reload systemd to account for updated unit files:

     systemctl daemon-reload

  5. Update the Nova database schema

  6. If you wish to perform a rolling upgrade of your compute servers, set Nova API version limits to allow your Juno compute hosts to inter-operate with your Kilo compute hosts and controllers.

  7. Restart all Nova resources in Pacemaker:

     pcs resource enable openstack-nova-scheduler-clone
 pcs resource enable openstack-nova-api-clone
 pcs resource enable openstack-nova-conductor-clone
 pcs resource enable openstack-nova-consoleauth-clone
 pcs resource enable openstack-nova-novncproxy-clone

  8. Wait until the output of pcs status shows that the above resources are running.