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1. In the node-specific hiera, disable the services at the first node you would like to upgrade with the keys

   1. apache::service_ensure: 'stopped'

2. Run puppet with the train modules/tags
3. Run apt-get purge python-cinderclient && dist-upgrade && apt-get autoremove

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 21-43, re-run puppet and restart nova-api and apache2)Remove the hiera keys that disabled the services, and re-run puppet

Nova-services

1. Run puppet with the stein modules/tags
2. Run apt dist-upgrade && apt-get autoremove
3. Run puppet and restart services

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