Hi Bryan:

Are you using unicast for your Ganglia setup?  Perhaps this has
something to do with send_metadata_interval?

Another thing you can try out is the sFlow integration in trunk.
hsflowd (which is the host daemon you install on your host) supports
libvirt.  There is a nice writeup here:

http://blog.sflow.com/2010/10/ganglia.html

Cheers,

Bernard

On Wed, Nov 10, 2010 at 7:26 AM, bwbwcool <[email protected]> wrote:
> Hi,
>
>
>
>     I have been using the Gmond Python metric modules
> (http://sourceforge.net/apps/trac/ganglia/wiki/ganglia_gmond_python_modules)
> to monitor network activity from virtual machines using the spoof host
> functionality.  I have followed the examples of spfexample.py and
> spfexample.pyconf in the ganglia codebase.  I'm using Ganglia 3.1.2 in
> Ubuntu 10.04.
>
>
>
> I created a list of spoof hosts by retrieving host names from libvirt 0.8.3
> (using the python libvirt library -this list of spoof hosts gets dynamically
> filled in the metric_init() function in spfexample.py).  I have the problem
> that whenever I start new virtual instances, they do not appear in ganglia
> (no rrd files for the spoofed VMs) until I restart gmond on the host.
>
>
>
> I know that normally, ganglia would not detect these new instances (as I'm
> pulling data from libivirt - these new instances do not have gmond installed
> on them).  Has anyone else tried monitoring VMs like this or know of a
> possible work-around (without having to install gmond on the VMs or restart
> gmond on the host every time I start up a new machine?).
>
>
>
> The same goes for when I kill an instance.  My spoofed heartbeat function
> shows that the instance is dead (I pull the state of the VM from libvirt
> every 10 seconds), but the instance still shows as running in the ganglia
> web portal after it's terminated (unless I restart gmond).  Has anyone tried
> this as well?  Thanks!
>
>
>
> -Bryan
>
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