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1. Pick the first node, and run puppet with the wallaby modules/tags, Run apt apt-get autoremove && apt-get dist-upgrade && apt-get autoremove

2. Run neutron-db-manage upgrade --expand
3. Restart neutron-server.service and rerun puppet
4. Upgrade the rest of the API-nodes (repeating step 1, and 3)
5. Stop all neutron-server processes for a moment, and run:
   
   1. neutron-db-manage upgrade --contract
6. Re-start the neutron-server processes

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