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1. Run puppet with the rocky modules/tags
2. Run apt dist-upgrade
3. Rerun puppet and restart the service
   1. systemctl restart ovsdb-server
   2. systemctl restart neutron-dhcp-agent.service neutron-l3-agent.service neutron-lbaasv2-agent.service neutron-metadata-agent.service neutron-openvswitch-agent.service neutron-ovs-cleanup.service

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1. Run puppet with the rocky modules/tags
2. Run apt dist-upgrade
3. Run puppet and restart services

Once everything is upgraded, including the compute-nodes:

1. Delete nova-consoleauth from the catalog
   1. openstack compute service list
   2. Delete all rows with nova-consoleauth: openstack compute service delete <id>
2. Run nova-manage db online_data_migrations on an API node. Ensure that it reports that nothing more needs to be done.

Heat

The rolling upgrade procedure for heat includes a step where you are supposed to create a new rabbit vhost. I don't want that. Therefore, this is the cold upgrade steps.

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1. Set heat::api::enabled: false and heat::engine::enabled: false and heat::api_cfn: false in hiera to stop all services
2. Run puppet with rocky modules/tags
3. Run apt - dist-upgrade
4. Run heat-manage db_sync
5. In hiera, add heat::keystone::authtoken::www_authenticate_uri: "%{alias('ntnuopenstack::keystone::auth::uri')}" to ntnuopenstack.yaml in hiera
   1. And remove heat::keystone::authtoken::auth_uri: "%{alias('ntnuopenstack::keystone::auth::uri')}"
6. Remove the hiera keys that disabled the services and re-run puppet

Horizon

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1. Run puppet with the roky modules/tags
2. run apt dist-upgrade
3. Run puppet again
4. restart apache2

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. Run puppet with the rocky modules/tags
2. Perform a dist-upgrade
3. Run puppet again
4. Restart openstack services and ovsdb-server