On Wed, Jun 27, 2012 at 5:48 PM, Dan Wendlandt d...@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.hellm...@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
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