Open Stack

We have other supporting services that require RabbitMQ and since they only
accept a single host in their connection config, we need a more reliable
way for them to connect. Those services work just fine with
HAProxy/RabbitMQ.

The OpenStack HA guide
<http://docs.openstack.org/high-availability-guide/content/_configure_openstack_services_to_use_rabbitmq.html>
is the only document I've come across that talks about connecting to
RabbitMQ by way of multiple hosts. Even the RabbitMQ docs
<http://www.rabbitmq.com/clustering.html> mention the use of a load
balancer, DNS round robin, etc.

So when someone reads up on RabbitMQ outside of the HA guide and sees that
it works well with HAProxy for other services, I think it's understandable
that they would attempt to connect OpenStack to RabbitMQ via HAProxy.


On Fri, Mar 20, 2015 at 12:07 AM, John Dewey <john at dewey.ws> wrote:

>  Why would anyone want to run rabbit behind haproxy?  I get people did it
> post the ‘rabbit_servers' flag.  Allowing the client to detect, handle, and
> retry is a far better alternative than load balancer health check
> intervals.
>
> On Thursday, March 19, 2015 at 9:42 AM, Kris G. Lindgren wrote:
>
> I have been working with dism and sileht on testing this patch in one of
> our pre-prod environments. There are still issues with rabbitmq behind
> haproxy that we are working through. However, in testing if you are using
> a list of hosts you should see significantly better catching/fixing of
> faults.
>
> If you are using cells with the don¹t forget to also apply:
> https://review.openstack.org/#/c/152667/
> ____________________________________________
> Kris Lindgren
> Senior Linux Systems Engineer
> GoDaddy, LLC.
>
>
>
> On 3/19/15, 10:22 AM, "Mark Voelker" <mvoelker at vmware.com> wrote:
>
> At the Operator¹s midcycle meetup in Philadelphia recently there was a
> lot of operator interest[1] in the idea behind this patch:
>
> https://review.openstack.org/#/c/146047/
>
> Operators may want to take note that it merged yesterday. Happy testing!
>
>
> [1] See bottom of https://etherpad.openstack.org/p/PHL-ops-rabbit-queue
>
> At Your Service,
>
> Mark T. Voelker
> OpenStack Architect
>
>
> _______________________________________________
> OpenStack-operators mailing list
> OpenStack-operators at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>
>
>
> _______________________________________________
> OpenStack-operators mailing list
> OpenStack-operators at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>
>
>
> _______________________________________________
> OpenStack-operators mailing list
> OpenStack-operators at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-operators/attachments/20150320/31b9d7b9/attachment.html>