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1. Run puppet with the train modules/tags
2. Run apt-get purge python-cinderclient && apt dist-upgrade && apt-get autoremove
3. Run puppet again
4. Restart openstack services and openvswitch-services
   1. No downtime: systemctl restart nova-compute.service neutron-openvswitch-agent.service
   2. At a later point: reboot

GPU-nodes

1. Run puppet with the train modules/tags
2. Run yum upgrade && yum autoremove
3. Run puppet again
4. Restart openstack services and openvswitch-services

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