[CentOS-virt] Need info on vnet mapping to guests

Christopher G. Stach II cgs at ldsys.net
Sun Oct 25 08:30:40 UTC 2009

----- "Neil Aggarwal" <neil at JAMMConsulting.com> wrote:

> I am trying to figure out if there is a way to
> use snmpd on the host to measure the traffic
> usage of the guests.  I do not want to require
> anything running on the guests since I do not
> control them.
> Is there a better way to determine which vnet is connected to
> which guest?

You can put ``virsh domname <domid>'' or just ``virsh list'' with some awk into an snmpd exec script to enumerate the vifs with their domain names.

> Also, does the mapping change when I stop and start guests
> or reboot the host?

Domain IDs do change between guest reboots so you will have to key your graphs with the domain name and not the vif name.

Christopher G. Stach II

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