[openstack-dev] [fuel] RabbitMQ in dedicated network

Andrew Maksimov amaksimov at mirantis.com
Wed Dec 23 17:35:30 UTC 2015

Hi Kirill,

I don't think we can give up on using fqdn node names for RabbitMQ because
we need to support TLS in the future.

Andrey Maximov
Fuel Project Manager

On Wed, Dec 23, 2015 at 8:24 PM, Kyrylo Galanov <kgalanov at mirantis.com>

> Hello,
> I would like to start discussion regarding the issue we have discovered
> recently [1].
> In a nutshell, if RabbitMQ is configured to run in separate mgmt/messaging
> network it fails on building cluster.
> While RabbitMQ is managed by Pacemaker and OCF script, the cluster is
> built using FQDN. Apparently, FQDN resolves to admin network which is
> different in this particular case.
> As a result, RabbitMQ on secondary controller node fails to join to
> primary controller node.
> I can suggest two ways to tackle the issue: one is pretty simple, while
> other is not.
> The first way is to accept by design using admin network for RabbitMQ
> internal communication between controller nodes.
> The second way is to dig into pacemaker and RabbitMQ reconfiguration.
> Since it requires to refuse from using common fqdn/node names, this
> approach can be argued.
> --
> [1] https://bugs.launchpad.net/fuel/+bug/1528707
> Best regards,
> Kyrylo
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