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[Leander Bessa <leanderbb@xxxxxxxxx>]

I was hopping to find out more as well, since the only information i
currently have comes from "nova help diagnostics". It would
be interesting to work since this appears to be hypervisor agnostic and
would allow for the development of a monitoring tool which fetches its
information solely from the openstack api.

On Tue, Mar 27, 2012 at 8:42 AM, Diego Parrilla Santamaría <
diego.parrilla.santamaria@xxxxxxxxx> wrote:

> I'm not familiar with nova-diagnostics, but we use collectd to gather
> information about each virtual machine running in KVM. We get information
> about cpu usage, memory, disk io, and network io per instance. Obviously
> it's not nicely integrated with nova commands, but it works in our
> deployments. And it comes in the distro by default.
>
> Let me know if I can help you in this blueprint: the only reason now in
> our distro to use collectd is kvm instances performance. If we can get from
> nova we should go that way in the future.
>
> Cheers
> Diego
> --
> Diego Parrilla
> <http://www.stackops.com/>*CEO*
> *www.stackops.com | * diego.parrilla@xxxxxxxxxxxx** | +34 649 94 43 29 |
> skype:diegoparrilla*
> * <http://www.stackops.com/>
> *
>
> *
>
>
>
> On Mon, Mar 26, 2012 at 6:06 PM, Leander Bessa <leanderbb@xxxxxxxxx>wrote:
>
>> Hello,
>>
>> I've been trying to implement the nova-diagnostics command  for libvirt.
>> I'm using the devstack installation on ubuntu 12.04. So far i've managed to
>> gather information regarding CPU, IO (network and disks). The memory
>> reading only works with the virsh command and does not report the actual
>> memory usage.  As pointed out to me previously, i've been looking at the
>> implementation of nova-diagnostics for the xenapi in order to try and
>> figure out how to supply the data back to openstack. However, i can not
>> make any sense of it. All i know is that it returns a set of keys with
>> values, which i suppose represent the values of the readings. What i wish
>> to know is if there's any document or specification which i can read which
>> defines what nova-diagnostics should return and under what format.
>>
>>
>> Regards,
>>
>> Leander
>>
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>