Steven Dake (stdake) <stdake at cisco.com> wrote: > Saverio, > > We sorted this out in Kolla with the Nova community defining the upgrade > process. Michal (cc) led that work in the Kolla community. I believe you > need to upgrade compute ahead of other services so the upgrade works > properly, but I'm not certain. The last time I heard, Nova required controller first, then computes: http://www.danplanet.com/blog/2015/06/26/upgrading-nova-to-kilo-with-minimal-downtime/ (Note the order of steps 3 and 5.) Same is true for neutron: you upgrade controller, then compute/network node agents, never the other way around. Ihar