Can quantum-l3-agent run on each compute node?

asked 2012-11-20 21:47:36 -0600

sunil-srivastava gravatar image

Know Network Node can be only one and for HA Pacemaker is used.

But I see compute node to communicate to External Network or Internet, has to always go via Local Network to Network Node and then to External Network Node. This is an unnecessary hop and for tens of thousands of VMs, this may become a bottleneck.

Can't the compute nodes stil use Local Network to communicate with each other, but use External Network, through their own Network NS and IP Tables maps?

Thanks, Sunil.

edit retag flag offensive close merge delete

3 answers

Sort by ยป oldest newest most voted
0

answered 2012-11-20 22:15:20 -0600

danwent gravatar image

This is similar to Nova's "multi_host" flag, and is not supported in Folsom, as mentioned here: http://docs.openstack.org/trunk/openstack-network/admin/content/ch_limitations.html (http://docs.openstack.org/trunk/opens...)

Something along these lines is being worked on for Quantum in Grizzly, but people should be aware that this model itself has significant limitations, in that it requires hypervisors to all have a public IP (bad), and all hypervisors to be on the same physical L2 network (very bad).

On Tue, Nov 20, 2012 at 1:50 PM, Sunil Srivastava < question214796@answers.launchpad.net > wrote:

New question #214796 on quantum: https://answers.launchpad.net/quantum/+question/214796 (https://answers.launchpad.net/quantum...)

Know Network Node can be only one and for HA Pacemaker is used.

But I see compute node to communicate to External Network or Internet, has to always go via Local Network to Network Node and then to External Network Node. This is an unnecessary hop and for tens of thousands of VMs, this may become a bottleneck.

Can't the compute nodes stil use Local Network to communicate with each other, but use External Network, through their own Network NS and IP Tables maps?

Thanks, Sunil.


You received this question notification because you are an answer contact for quantum.


~~~~~~~~~~~~~~~~~~~~~~~~~~~ Dan Wendlandt Nicira, Inc: http://www.nicira.com twitter: danwendlandt ~~~~~~~~~~~~~~~~~~~~~~~~~~~

edit flag offensive delete link more
0

answered 2012-11-20 23:07:26 -0600

sunil-srivastava gravatar image

Dan,

Can you please point to a blue-print on the feature planned for Grizzly?

Thanks, Sunil.

edit flag offensive delete link more
0

answered 2012-11-20 23:36:18 -0600

danwent gravatar image

https://blueprints.launchpad.net/quantum/+spec/quantum-multihost (https://blueprints.launchpad.net/quan...)

for future reference, all quantum blueprints can be found here:

https://blueprints.launchpad.net/quantum/ (https://blueprints.launchpad.net/quan...)

dan

On Tue, Nov 20, 2012 at 3:11 PM, Sunil Srivastava < question214796@answers.launchpad.net > wrote:

Question #214796 on quantum changed: https://answers.launchpad.net/quantum/+question/214796 (https://answers.launchpad.net/quantum...)

Sunil Srivastava posted a new comment: Dan,

Can you please point to a blue-print on the feature planned for Grizzly?

Thanks, Sunil.


You received this question notification because you are an answer contact for quantum.


~~~~~~~~~~~~~~~~~~~~~~~~~~~ Dan Wendlandt Nicira, Inc: http://www.nicira.com twitter: danwendlandt ~~~~~~~~~~~~~~~~~~~~~~~~~~~

edit flag offensive delete link more

Get to know Ask OpenStack

Resources for moderators

Question Tools

1 follower

Stats

Asked: 2012-11-20 21:47:36 -0600

Seen: 57 times

Last updated: Nov 20 '12