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[Sandy Walsh <sandy.walsh@xxxxxxxxxxxxx>]

Hi again,

I've made some final changes to the Multi-Cluster spec and hope to start coding this week.

In a nutshell:

I spent the past week messing with RabbitMQ clusters, including WAN clusters between several Rackspace Data Centers. RabbitMQ doesn't really support inter-cluster communication without a nascent piece of technology called Shovel.

Because of this and some concerns voiced by others, I've changed the spec to abstract the inter-zone communication approach to support Nova API communications initially, but leave room for AMQP communications down the road.

http://wiki.openstack.org/MultiClusterZones now reflects these changes.
Specifically: http://wiki.openstack.org/MultiClusterZones#Inter-Zone_Communication_and_Routing

(ps> I have more data on the WAN testing I did this weekend and will put it on the wiki later today)

Once again, look forward to your feedback here: http://etherpad.openstack.org/multiclusterdiscussion

Thanks in advance,
Sandy



<http://wiki.openstack.org/MultiClusterZones>
________________________________
From: openstack-bounces+sandy.walsh=rackspace.com@xxxxxxxxxxxxxxxxxxx [openstack-bounces+sandy.walsh=rackspace.com@xxxxxxxxxxxxxxxxxxx] on behalf of Sandy Walsh [sandy.walsh@xxxxxxxxxxxxx]
Sent: Monday, January 31, 2011 3:26 PM
To: openstack@xxxxxxxxxxxxxxxxxxx
Subject: [Openstack] Multi Clusters in a Region ...

Hi y'all,

Now that the Network and API discussions have settled down a little I thought I'd kick up the dust again.

I'm slated to work on the Multi Cluster in a Region BP for Cactus. This also touches on Zone/Host Capabilities and Distributed Scheduler, so feedback is important.

https://blueprints.launchpad.net/nova/+spec/multi-cluster-in-a-region

Here is my first draft at a spec. I'm putting it out there as strawman. Please burn as needed. Links to previous spec/notes are at the top of the spec.
http://wiki.openstack.org/MultiClusterZones

I will adjust as feedback is gathered.

We can discuss this in this thread, or on the Etherpad (I prefer the etherpad since it's linked to the wiki page):
http://etherpad.openstack.org/multiclusterdiscussion


Thanks in advance,
Sandy


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Confidentiality Notice: This e-mail message (including any attached or
embedded documents) is intended for the exclusive and confidential use of the
individual or entity to which this message is addressed, and unless otherwise
expressly indicated, is confidential and privileged information of Rackspace.
Any dissemination, distribution or copying of the enclosed material is prohibited.
If you receive this transmission in error, please notify us immediately by e-mail
at abuse@xxxxxxxxxxxxx, and delete the original message.
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