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• This documents expects that your cloud is deployed with the latest queens tag(vQ.n.n) of the ntnuopenstack repository.
• Your cloud is designed with one of the two architectures:
  • Each openstack project have their own VM(s) for their services
• You have a recent mysql backup in case things go south.
• If you want to do a rolling upgrade, the following key should be set in hiera long enough in advance that all hosts have had an puppet-run to apply it:

  • nova::upgrade_level_compute: 'queensauto'

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  ^ WiP Lars Erik vet ikke om dette stemmer enda

  
  

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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 neutron-dhcp-agent.service neutron-l3-agent.service neutron-lbaasv2-agent.service neutron-metadata-agent.service neutron-openvswitch-agent.service neutron-ovs-cleanup.service

Nova

To upgrade nova without any downtime, follow this procedure

On the API-nodes (select one to start with):

1. In the node-specific hiera, disable the services with the keys

   1. apache::service_ensure: 'stopped'

   2. nova::api::enabled: false

2. Run puppet with the rocky modules/tags
3. Run apt dist-upgrade
4. Run nova-manage api_db sync
5. Run nova-manage db sync
6. Re-enable placement API on the upgraded node and disable it on the other nodes. This is because the other services needs the placement API to be updated first
   
   1. Remove apache::service_ensure: 'stopped' from the upgraded node's hiera file
   2. Set it on all the other nodes and run puppet
7. Upgrade the rest of the nodes (basically run step 2 and 3, re-run puppet and restart nova-api and apache2)
8. Remove the hiera keys that disabled the services, and re-run puppet

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.

Step 4 is only for the API-nodes, so the routine should be run on the API-nodes first

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