[openstack-dev] [Quantum] Quantum Scheduler

gong yong sheng gongysh at linux.vnet.ibm.com
Wed Dec 19 00:51:55 UTC 2012

The BP name is a little  confusing. It is not all about scheduler. But
it needs us to have a scheduler.
The BP spec in Read the full specification
is old. But I cannot change the URL. the new Spec is '

I have a patch for this BP: https://review.openstack.org/#/c/18216/

please see the schedule_xxxx methods in this file:

I composed a draft admin guide (attached) for the BP, please have a look
at: Appendix A. Demos Setup ->Scale and HA of agents.

I read your 
http://wiki.openstack.org/Quantum/LBaaS/Architecture/Scheduler  and have
1. Quantum scheduler can be multischeduler, just like one in
nova-scheduler although it schedules only VM to compute hosts now.
2. With multischeduler, we can have sub schedulers. for example sub
scheduler for allocating networks to DHCP agents
sub scheduler for allocating quantum routers to l3 agents,  and
subscheduler for allocating 'pool' to devices
So here it is:
class multischeduler(object):
scheduler['network'] = import_class(conf.network_scheduler)
scheduler['router'] = import_class(conf.router_scheduler)
scheduler['pool'] = import_class(conf.pool_scheduler)

3. Then the sequence diagram is calling scheduler['pool'].
My BP is calling other two.

Yong Sheng Gong

On 12/18/2012 10:25 PM, Eugene Nikanorov wrote:
> Hi Yong Sheng,
> I see you've started working
> on https://blueprints.launchpad.net/quantum/+spec/quantum-scheduler
> We also thought on designing/implementing scheduler for load balancer
> service.
> Although we're working on it within LBaaS effort, we're designing
> scheduler to be a framework where service-specific scheduling
> algorithms may easily be plugged.
> Could you briefly go
> over http://wiki.openstack.org/Quantum/LBaaS/Architecture/Scheduler and share
> your thoughts?
> I think it would be better to have one scheduling component in quantum
> rather than a set of shedulers for each kind of service.
> Also I have a question regarding quantum scheduler architecture
> proposal (both options1 and 2) in blueprint spec:
> why does it need to be a separate process?
> Thanks,
> Eugene.
> _______________________________________________
> OpenStack-dev mailing list
> OpenStack-dev at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20121219/6344e2bc/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: bk-quantum-admin-guide-local.pdf
Type: application/pdf
Size: 759181 bytes
Desc: not available
URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20121219/6344e2bc/attachment-0001.pdf>

More information about the OpenStack-dev mailing list