[libvirt] [RFC] Publishing utilisation on mDNS

[Daniel P. Berrange]

On Wed, May 14, 2008 at 10:32:45PM +0200, Stefan de Konink wrote:
> After playing around with Avahi, I have now a server that is able to query
> all hosts on the network and their VMs, I think it would be interesting to
> publish utilisation statistics in the Txt record of the service.

[snip]

> I might even go further and publish all resource statistics over mDNS.
> Maybe people have ideas about this too, securitywise i'm not really
> interested in the implications since I'm publishing it on a management
> LAN.

This is already a solved problem - any resource monitoring system can
publish this kind of information. Rich Jones has already written libvirt
plugins for both collectd and nagios to publish VM information, and so 
there's no need to re-invent this in libvirtd itself, nor abuse Avahi/mDNS
service discovery for this purpose

  http://collectd.org/documentation/manpages/collectd.conf.5.shtml#plugin_libvirt
  http://et.redhat.com/~rjones/nagios-virt/

Regards,
Daniel.
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