RE: [Xen-users] Dom U bandwidth monitoring - pmacct, bandwidthd?

["Robbie A. Garrett" <RGarrett@xxxxxxxxxxxxxx>]

How would the switch know that traffic is for DomU or internet?

 

this would have to be on a presence router / switch and track by ip address which I think is a bad idea.

What I would suggest is that you allow there vm's to be able to use there own private network to move the data from one vm to another.  A lot of houses do it like this so they can let the customers who setup there vm's in a cluster have there cluster traffic bandwidth free.

 

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From: Matthew Law [matt@xxxxxxxxxxxxxxxxxx]
Sent: Friday, February 12, 2010 12:20 PM
To: Robbie A. Garrett
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-users] Dom U bandwidth monitoring - pmacct, bandwidthd?

On Fri, February 12, 2010 4:48 pm, Robbie A. Garrett wrote:
> My Company developed a method via mrtg.  Each vm has a vif name that means
> something within our tracking system.
>
> an example of this would be user32.  On the Xen server, they have a vm
> called user32 and within the config file of the VM, there vif name is
> user32.  We set there MRTG files to pull data based on 'network card name'
> (in this case user32), and use rrd tool to store the information.   This
> makes it very easy to pull all historical data from vm's.  When ever a vm
> moves, so does it's .rrd file  thus keeping all bandwidth traffic
> together.
>
> This may not solve your issue or question...  but I would try barking up
> the mrtg tree to collect bandwidth totals.

I have unique vif names for each domU already (its against a unique ID in
a database table which maps back to the customer).  Only problem with
taking stats from the dom0 is that I wouldn't like to penalise people for
transferring data between their domUs on different hosts.  We get charged
for uplinked data transfer only.  Its starting to look like I might have
to do this at the switches...

Thanks,

Matt.

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