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Any more thoughts about this subject? Ask? Vish?<br><br>Best regards,<br><br>Tristan van Bokkem<br>Datacenter Operations<br><br>Contact:<br>E-mail Personal: <a href="mailto:tristanvanbokkem@i3d.net">tristanvanbokkem@i3d.net</a><br>E-mail Support: <a href="mailto:info@i3d.net">info@i3d.net</a><br>E-mail NOC: <a href="mailto:noc@i3d.net">noc@i3d.net</a><br>Website: <a href="http://www.i3d.net" target="_blank">http://www.i3d.net</a> Office:<br>Interactive 3D B.V.<br>Meent 93b<br>3011 JG Rotterdam<br>The Netherlands<br><br>Visit www.smartdc.net – SmartDC is our in-house 36,000 sq. ft. datacenter in Rotterdam, The Netherlands. High density hosting – multiple fiber carriers in-house – Level3 PoP.<br><br>Interactive 3D (i3D.net) is a company registered in The Netherlands at Meent 93b, Rotterdam. Registration #: 14074337 - VAT # NL 8202.63.886.B01. Interactive 3D (i3D.net) is CDSA certified on content protection and security. We are ranked in the Deloitte Technology Fast 50 as one of the fastest growing technology companies.<br><blockquote style="padding-left: 5px; margin-left: 5px; border-left: #0000ff 2px solid; margin-right: 0px"><hr><b>From:</b> Alexis Richardson [mailto:alexis@rabbitmq.com]<br><b>To:</b> Major Hayden [mailto:major.hayden@rackspace.com]<br><b>Cc:</b> i3D.net - Tristan van Bokkem [mailto:tristanvanbokkem@i3d.nl], <openstack@lists.launchpad.net> [mailto:openstack@lists.launchpad.net], Ask Solem [mailto:ask@rabbitmq.com]<br><b>Sent:</b> Tue, 14 Feb 2012 14:47:13 +0100<br><b>Subject:</b> Re: [Openstack] Howto Nova setup with HA?<br><br>Major,<br>
<br>
The current set-up of HA in Openstack is borked in several ways.<br>
<br>
Ask Solem, cc'd, is going to write up a note helping people to do it properly.<br>
<br>
alexis<br>
<br>
<br>
On Tue, Feb 14, 2012 at 1:34 PM, Major Hayden<br>
<<a href="mailto:major.hayden@rackspace.com">major.hayden@rackspace.com</a>> wrote:<br>
> On Feb 14, 2012, at 2:07 AM, i3D.net - Tristan van Bokkem wrote:<br>
><br>
>> 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!<br>
><br>
> 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:<br>
><br>
> <a href="http://www.clusterlabs.org/wiki/DRBD_MySQL_HowTo" target="_blank">http://www.clusterlabs.org/wiki/DRBD_MySQL_HowTo</a><br>
><br>
> 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:<br>
><br>
> <a href="http://www.rabbitmq.com/pacemaker.html" target="_blank">http://www.rabbitmq.com/pacemaker.html</a><br>
><br>
> --<br>
> Major Hayden<br>
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