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Upgrade-steps (start with a single node):

1. Add the following lines to the node-specific hiera:
   • apache::mod::wsgi::package_name: 'libapache2-mod-wsgi-py3'
   • apache::mod::wsgi::mod_path: '/usr/lib/apache2/modules/mod_wsgi.so'
2. Run puppet with the rocky modules/tags
3. Stop apache2 and puppet
4. Purge the keystone and apache2 package
5. Run apt dist-upgrade
6. Run puppet again
   1. This will re-install keystone (ensure that apache2 does not start - should be ensured by puppet as of the enable: false flag in hiera)
7. Run keystone-manage doctor and ensure nothing is wrong
8. Run keystone-manage db_sync --expand
   1. Returns nothing
9. Run keystone-manage db_sync --migrate
   1. Returns nothing
10. At this point, you may restart apache2 on this node
    1. Remove the  apache::service_ensure: 'stopped' previously set in hiera.
11. Upgrade keystone on the other nodes, one at a time
    1. Basically run step 1-5 on the other nodes
12. When all nodes are upgraded, perform the final DB sync
    1. keystone-manage db_sync --contract
13. Remove the keystone::enabled: false and the keystone::manage_service: false hiera key from the first node, and re-run puppet
14. Remove the keystone::sync_db: false key from hiera