Upgrade Neutron

  1. Prevent Pacemaker from triggering the Neutron cleanup scripts:

     pcs resource unmanage neutron-ovs-cleanup-clone
 pcs resource unmanage neutron-netns-cleanup-clone

  2. Stop Neutron resources in Pacemaker:

     pcs resource disable neutron-server-clone
 pcs resource disable neutron-openvswitch-agent-clone
 pcs resource disable neutron-dhcp-agent-clone
 pcs resource disable neutron-l3-agent-clone
 pcs resource disable neutron-metadata-agent-clone

  3. Upgrade the relevant packages:

     yum upgrade 'openstack-neutron*' 'python-neutron*'

  4. Reload systemd to account for updated unit files:

     systemctl daemon-reload

  5. Update the Neutron database schema

  6. Update the Neutron rootwrap configuration

  7. Restart Neutron resources in Pacemaker:

     pcs resource enable neutron-metadata-agent-clone
 pcs resource enable neutron-l3-agent-clone
 pcs resource enable neutron-dhcp-agent-clone
 pcs resource enable neutron-openvswitch-agent-clone
 pcs resource enable neutron-server-clone

  8. Return the cleanup agents to Pacemaker control

     pcs resource manage neutron-ovs-cleanup-clone
 pcs resource manage neutron-netns-cleanup-clone

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