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Le lundi 30 juillet, Matt Riedemann écrivit :

> On 7/27/2018 3:34 AM, Gilles Mocellin wrote:
> > - for compute nodes : disable compute node and live-evacuate instances...
> 
> To be clear, what do you mean exactly by "live-evacuate"? I assume you mean
> live migration of all instances off each (disabled) compute node *before*
> you upgrade it. I wanted to ask because "evacuate" as a server operation is
> something else entirely (it's rebuild on another host which is definitely
> disruptive to the workload on that server).
> 
> http://www.danplanet.com/blog/2016/03/03/evacuate-in-nova-one-command-to-confuse-us-all/
> 
> -- 
> 
> Thanks,
> 
> Matt

[Sorry for the delay, my mail was blocked]

Ah yes, I know the difference. Of course, I mean live migrate all instances on 
the node before disabling it, and upgrade / reboot.
So, the following nova command match :

$ nova host-evacuate-live