host identifier

[Jiatong Shen]

Thanks, I'll check it out.

On Mon, Jul 5, 2021 at 4:30 PM Daniel P. Berrangé <berrange at redhat.com>
wrote:

> On Mon, Jul 05, 2021 at 08:31:15AM +0800, Jiatong Shen wrote:
> > Hello community,
> >
> > I am using OpenStack nova and realize that nova now uses host fqdn from
> > libvirt as a uniq identifier for a compute node.  The issue is that host
> > might need to change its fqdn under some
> > rare circumstances and lose some usage data due to the nova manages
> > compute node resources.
> >
> > My question is: does libvirt already export host uuid identifier to other
> > applications? I skim through the code base and find there is host uuid
> > related code which reads /etc/machine-id to obtain a uniq uuid for
> > migration, but seems this uuid cannot be obtained through virsh
> interface.
>
> Libvirt has long exposed a host UUID in the capabilities XML
>
> Regards,
> Daniel
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-- 

Best Regards,

Jiatong Shen
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