Re: Vanilla Xen total CPU %

[Olivier Lambert <lambert.olivier@xxxxxxxxx>]

Hi!

FYI, we managed to contribute to a Netdata plugin using Xen stats (see https://learn.netdata.cloud/docs/agent/collectors/xenstat.plugin/ ). You can use it to stream it to a master netdata, and this one can directly put metrics in a Prometheus DB (I'm doing that for my own production).

Best,

Olivier.

Le mar. 9 juin 2020 à 04:41, David Kowis <david@xxxxxx> a écrit :

On 2020-06-08 10:08, Andy Smith wrote:
> Hi,
>
>> > On Jun 8, 2020, at 12:58 PM, Nick Calvert <nick.calvert@simplyhosting.cloud> wrote:
>> > What I was trying to do was stream some of the xentop counters
>> > into a time series database  (influxdb) so I could graph this.
>
> I wanted to do this too, but for Prometheus.
+1

I was going to approach it from a crystal point of view, binding to the
libxl c library. Again real life, and time got to me. I would love to
see a high quality Xen Prometheus exporter!

>
> I wrote a libxl C program that prints out the CPU time used by each
> guest in Prometheus's exposition format¹. That would be just the
> cumulative time in seconds because Prometheus likes things in its
> base units, and you can derive percentages and rates from that.
>
> I just trigger it by cron every 5 minutes and use it as a
> node_exporter textfile collector², but I guess if I wanted it at a
> shorter interval I'd make it into a proper exporter from a
> standalone daemon.
>
> If anyone would find it useful I can publish it, though my C is
> terrible…

I'd find it useful to look at :) Throw it on a git repo somewhere, or
something :)

-- David