FWIW, we're using DRBD + pacemaker in active/passive setups for both the
MySQL and RabbitMQ setup in the trystack.org (the artist formerly known as
FreeCloud) project, and it's working quite well and is pretty simple to set
up. Nati Ueno could give some more details on the setup and the Chef
cookbooks used...
Best,
-jay
On 02/16/2012 03:46 AM, i3D.net - Tristan van Bokkem wrote:
Any more thoughts about this subject? Ask? Vish?
Best regards,
Tristan van Bokkem
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------------------------------------------------------------------------
*From:* Alexis Richardson [mailto:alexis@xxxxxxxxxxxx]
*To:* Major Hayden [mailto:major.hayden@xxxxxxxxxxxxx]
*Cc:* i3D.net - Tristan van Bokkem [mailto:tristanvanbokkem@xxxxxx],
<openstack@xxxxxxxxxxxxxxxxxxx>
[mailto:openstack@xxxxxxxxxxxxxxxxxxx], Ask Solem
[mailto:ask@xxxxxxxxxxxx]
*Sent:* Tue, 14 Feb 2012 14:47:13 +0100
*Subject:* Re: [Openstack] Howto Nova setup with HA?
Major,
The current set-up of HA in Openstack is borked in several ways.
Ask Solem, cc'd, is going to write up a note helping people to do it
properly.
alexis
On Tue, Feb 14, 2012 at 1:34 PM, Major Hayden
<major.hayden@xxxxxxxxxxxxx<mailto:major.hayden@xxxxxxxxxxxxx>> wrote:
> On Feb 14, 2012, at 2:07 AM, i3D.net - Tristan van Bokkem wrote:
>
>> So, we can run MySQL in master-master mode on multiple hosts, we
can run nova-api on serveral hosts and load balance those and
RabbitMQ has a cluster ha setup as well but is this the way to go? I
can't find a clear answer to this. I am hoping one can shine some
light on this!
>
> If you want to make things a little simpler, an active/passive
MySQL setup with pacemaker, corosync, and DRBD will work quite well.
ClusterLabs has a pretty decent howto on their site:
>
> http://www.clusterlabs.org/wiki/DRBD_MySQL_HowTo
>
> As for RabbitMQ clustering, I worked with it for several days and
had quite a few problems with data consistency and availability. We
eventually settled on the "legacy" H/A method for RabbitMQ using
pacemaker and DRBD. There's a pretty good walkthrough on RabbitMQ's
site:
>
> http://www.rabbitmq.com/pacemaker.html
>
> --
> Major Hayden
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