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Re: Howto Nova setup with HA?
When I saw your post, I though what about an pacemaker ressource agent?
Corosync for the messaging layer and pacemaker for the ressource
management. Maybe someone as wrote a script ressource agent for nova in
order to manage the failover.
Also DRBD can be useful.
And then after a couple of research on Google, I found this 3 links:
Hope this will help you.
On Tue, Feb 14, 2012 at 12:05 PM, i3D.net - Tristan van Bokkem <
> Hi Christian,
> Thanks for your reply.
> With mysql master/master i meant the following: http://mysql-mmm.org/ but
> it seems they are using 2 different locations for mysql reads and writes.
> Something nova is (yet) not able to configure (i.e. --sql_connection= which
> is being used for reads and rights.)
> Maybe http://www.mysql.com/products/cluster/ is a better way..
> RabbitMQ HA i am aware of. This is something we are looking at as well.
> The main question is how does other companies reach HA with openstack? I
> can't find any good information on the net about it.
> And how does Essex change things?
> Best regards,
> Tristan van Bokkem
> Datacenter Operations
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> *From:* Christian Berendt [mailto:berendt@xxxxxxxxxxxxx]
> *To:* i3D.net - Tristan van Bokkem [mailto:tristanvanbokkem@xxxxxx]
> *Cc:* openstack@xxxxxxxxxxxxxxxxxxx
> *Sent:* Tue, 14 Feb 2012 11:54:38 +0100
> *Subject:* Re: [Openstack] Howto Nova setup with HA?
> Hi Tristan.
> > 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!
> I would prefer to use MySQL Cluster:
> http://www.mysql.com/products/cluster/. You meant that with MySQL
> For RabbitMQ there are several ways to setup it:
> I think the customer site has to decide which HA setup they want use.
> All types have advantages and disadvantages.
> HTH, Christian.
> Christian Berendt
> Linux / Unix Consultant & Developer
> Mail: berendt@xxxxxxxxxxxxx
> B1 Systems GmbH
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