...

1. Run puppet with the wallaby modules/tags
2. run dnf upgrade

3. Yes this is weird: Login to all memcached servers, and run systemctl restart memcached
   1. This is only necessary when upgrading the first horizon server
4. Run puppet again
5. restart httpd

Compute-nodes

When all APIs etc. are upgraded, it is time to do the same on the compute-nodes. Compute nodes are simple to upgrade:

1. Do one of:
   1. Reinstall the node with wallaby modules/tags
   2. Run puppet with the wallaby modules/tags, Run apt dist-upgrade && apt-get autoremove
2. Reboot the compute-node

GPU-nodes

1. Run puppet with the wallaby modules/tags
2. Run yum upgrade && yum autoremove
3. Run puppet again
4. Restart openstack services and openvswitch-services

Finalizing

• Run nova-manage db online_data_migrations on a nova API node. Ensure that it reports that nothing more needs to be done.
• Rotate octavia images.