In next 2-5 days I'll try ganglia + sFlow again, so I'll definitely let you
know about my problems.
If you can't answer my previous question to whom should I send it?
Cheers,
On Wed, Jun 20, 2012 at 8:24 PM, Peter Phaal <peter.ph...@inmon.com> wrote:
> I can't help you with your questions about gmetad, but I would be very
> interested in hearing where you ran into trouble during the sFlow/Ganglia
> configuration. I am currently working on documentation and would like to
> make sure that I fill any gaps.
>
>
> On Jun 20, 2012, at 11:09 AM, Simon G. wrote:
>
> I've already seen sFlow and ganglia about month ago, and I had some
> problems during configuration, but maybe I should try it again.
>
> So maybe I have different question now. Is there any way to query gmetad
> about historical data? I'd like to retrieve some data in my external piece
> of software (python module) to analyze those data and do some actions if
> proper conditions are fulfilled. I don't want store data twice (in my
> module for example in my Mysql database and in RRD files created by
> gmetad), so my true question is: can i query gmetad to get those data, or
> should i just read gmetad's RRD file and do not connect with gmetad itself
> or maybe should i get data through tcp from gmetad and store it in my own
> way and own database? I don't know much about RRD and I'd like to avoid
> reading RRD files myself, but also I don't want to store them twice. It
> would be perfect if I could get them through ganglia (from gmetad after
> proper request), because mostly, I'm interested in historical data.
>
> Btw. what differences are between gmetad and gmetad-python? Beside
> language of course. Both implementations have the same features?
>
>
> On Tue, Jun 19, 2012 at 12:04 AM, Peter Phaal <peter.ph...@inmon.com>wrote:
>
>> Simon,
>>
>> Ganglia 3.2+ can collect and display sFlow metrics:
>> http://blog.sflow.com/2012/01/using-ganglia-to-monitor-virtual.html
>>
>> You can monitor the virtual machines by installing Host sFlow agents (
>> http://host-sflow.sourceforge.net/ ) on the hypervisors. The sFlow
>> agents export libvirt metrics using the sFlow protocol. Currently, Host
>> sFlow supports KVM, Xen and Hyper-V.
>>
>> Cheers,
>> Peter
>>
>> On Jun 18, 2012, at 2:50 PM, Simon G. wrote:
>>
>> Hello,
>>
>> Is there any way to use Ganglia to monitor virtual machines? Right now
>> I'd like to get data from libvirt's api (CPU usage, IO, Network etc), but I
>> don't want to reinvent the wheel and I'd like to use already mature tools
>> to do that, for example Ganglia. I know collectd has plugins which support
>> libvirt, but from what I've read, ganglia could be better solution.
>>
>> 1st question is: how can I monitor virtual machines in Ganglia.
>> Especially using libvirt, but later also Xen, VMware, Hyper-V. Is it
>> possible? Can ganglia monitor virtual machines? What can I monitor without
>> additional agent on guest and what can I monitor with such agent?
>> 2nd question: I've just found out gmetad-python, but before I'll try to
>> use it I'd like to ask about possibilities to use python scripts to collect
>> data from gmond. What is the easiest way to do that?
>>
>> I'm interested in python, because I'd like to try create simple Openstack
>> and Ganglia proof of concept. I was going to use existing simple monitoring
>> around libvirt from openstack and implement storing data in RRD files, but
>> as I've mentioned above, I don't want to reinvent the wheel and I think a
>> better way is to integrate already existing solutions. The question is how
>> to integrate those two projects. My first step is to run gmond on each
>> host, collect data from it via python script, save those data into RRD file
>> and use this data in Openstack's environment. If gmetad-python can do that,
>> it's great. Then second step will be to get that data from gmetad-python
>> (via python script) and use it in Openstack's environment.
>>
>> Cheers,
>> --
>> *Simon*
>>
>>
>>
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>>
>>
>
>
> --
> *Semy*
>
>
>
>
--
*Semy*
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