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1. Run puppet with the zed modules/tags
2. Run apt dist-upgrade
3. Rerun puppet and restart the service (or simply reboot the host).
   1. systemctl restart ovsdb-server
   2. systemctl restart neutron-dhcp-agent.service neutron-l3-agent.service neutron-metadata-agent.service neutron-openvswitch-agent.service neutron-ovs-cleanup.service
4. Verify that routers on the node actually work.

Placement

1. Install one node at a time, either by reinstalling it using the zedmodules/tags or by folloing this list::
   1. Run puppet with zed modules/tags

   2. Run systemctl stop puppet apache2

   3. Run apt-get purge placement-api placement-common python3-placement && apt-get autoremove && apt-get dist-upgrade
   4. Run puppet again

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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