Open Stack

On Wed, Jun 27, 2012 at 5:48 PM, Dan Wendlandt <dan at nicira.com> wrote:

> Hi Doug,
>
> Thanks for sending this out.  Pinging the ceilometer team about Quantum
> support has been on my todo list for a while now.
>
> Troy (CC'd) did some thinking about notifications for quantum, but we
> haven't implemented this yet.  Here's the existing blueprint:
> https://blueprints.launchpad.net/quantum/+spec/quantum-notifications .
>  My assumption is that we would model what Nova is doing for notifications,
> but to be honest, I'm not really familiar with that code.  Anyone
> interested in taking this blueprint on?
>

Using the nova-based notifications library would make it very easy to tie
in with the work we have already done to catch compute notifications. The
libraries for notifications were just moved into openstack.common, which
will make them easy for you to pick up and reuse.


> We do have an extension to support port-statistics to indicate the amount
> of traffic sent to/from a VM that could be used by ceilometer, though that
> would likely be more of a poll model, at least with the current
> implementation.
>

That makes sense, and is similar to what we're doing for things like CPU
and disk I/O by polling libvirt.

One thing that comes up frequently is the desire to only charge for traffic
"outside" of a cloud. Do the ports know how to tell the difference between
internal and external traffic?


>
> Dan
>
> On Wed, Jun 27, 2012 at 3:16 PM, Doug Hellmann <
> doug.hellmann at dreamhost.com> wrote:
>
>> Hello,
>>
>> As part of the ceilometer project¹, we're working on retrieving usage
>> data from various OpenStack components. We would like to integrate
>> with Quantum for information about network resource utilization that a
>> deployer might want to bill their tenants for.
>>
>> Ceilometer has a plugin-based architecture, which makes it easy to add
>> new measurement types and data collectors. Our approach with other
>> measurements is to collect everything and let the ceilometer user decide
>> what to bill for and what to ignore (they can turn off measurements for
>> things they do not care about).
>>
>> Depending on the project and the type of data, we can either
>> use the notification events generated by allocating/deallocating
>> a resource, or we can poll for metrics being collected elsewhere.
>> We will probably want to use both approaches for integrating
>> with Quantum (e.g., use events for things like IP allocation and
>> polling for I/O).
>>
>> Do you have any advice on how to integrate Ceilometer and Quantum?
>> For example, does Quantum emit notifications and does it collect
>> (or provide an API to query) I/O statistics?
>>
>> Thanks,
>> Doug
>>
>>
>> ¹  http://launchpad.net/ceilometer
>>
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>>
>
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Dan Wendlandt
> Nicira, Inc: www.nicira.com
> twitter: danwendlandt
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
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