[Openstack] [Ceilometer] VM instance CPU/disk/network utilization data

Prashanth Hari hvprash at gmail.com
Fri Dec 13 17:35:49 UTC 2013


How are the neutron metering getting collected ? Is there a neutron agent
similar to the nova compute agent ?


Thanks,
Prashanth


On Fri, Dec 13, 2013 at 3:09 AM, Eoghan Glynn <eglynn at redhat.com> wrote:

>
> Hi Mark,
>
> A common issue is a mismatch between the hostname used by nova
> to associate instances with hosts, and the hostname used by the
> ceilometer compute agent to constrain the query it uses to discover
> the instances running on the local host.
>
> Typically a mismatch might result from the hostname defaulting to
> a FQDN in the nova case, and perhaps explicitly configured as an
> plain hostname in the ceilometer case.
>
> In fact the default hostname used by *both* service is by design
> the same, socket.gethostname(), so if it's not explicitly configured
> for both services, it will naturally match.
>
> So check your /etc/ceilometer/ceilometer.conf for an explicit setting
> of the host option in the [DEFAULT] section. You can just comment
> that out to fall back onto the default value for the variable
>
> Cheers,
> Eoghan
>
> ----- Original Message -----
> > I see the nova-compute service enabled and running in the Horizon
> > dashboard and I followed the instructions here
> > (
> http://docs.openstack.org/havana/install-guide/install/yum/content/ceilome
> > ter-install-nova.html) to install the Telemetry/Ceilometer compute agent
> > on the same node but I still don't see any of the CPU/disk/network
> > utilization data in the  meter or resource lists (retrieved using CLI and
> > API queries -
> >
> http://docs.openstack.org/developer/ceilometer/webapi/v2.html#api-and-cli-q
> > uery-examples).
> >
> > Any ideas? Keep in mind, I am new to this and still trying to understand
> > how everything works together so please let me know if I'm looking in the
> > wrong places or not setting this up correctly.
> >
> > Thanks,
> > Mark
> >
> >
> > On 12/11/13 12:50 AM, "Julien Danjou" <julien at danjou.info> wrote:
> >
> > >On Wed, Dec 11 2013, Mark Vlcek (mavlcek) wrote:
> > >
> > >> How do I get CPU/disk/network utilization data? Do I need to update my
> > >> ceilometer.conf file or is something else not setup/running correctly?
> > >
> > >You need to run the ceilometer compute agent on each of your compute
> > >node.
> > >
> > >--
> > >Julien Danjou
> > >/* Free Software hacker * independent consultant
> > >   http://julien.danjou.info */
> >
> >
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