upgrade-horizon-ha.md

Upgrade Horizon

1. Stop the Horizon resource in Pacemaker:

    pcs resource disable horizon-clone
   

2. Wait until the output of pcs status shows that the service has stopped running.

3. Upgrade the relevant packages:

    yum upgrade httpd 'openstack-dashboard*' \
      'python-django*'
   

4. Reload systemd to account for updated unit files:

    systemctl daemon-reload
   

5. Correct the Horizon configuration

6. Restart the Horizon resource in Pacemaker:

    pcs resource enable horizon-clone
   

7. Wait until the output of pcs status shows that the above resource is running.