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 IIRC the plan is to switch to Quorum Queues: https://blog.rabbitmq.com/posts/2020/04/rabbitmq-gets-an-ha-upgrade/

I'm an operator; hopefully the devs can tell us more about these plans.
     On Friday, February 10, 2023, 11:54:15 AM EST, Satish Patel <satish.txt at gmail.com> wrote:  
 
 Hi,
I went through that doc because it always shows up first in google search :) 
My question was why the kolla default doesn't come with HA policies?  I can surely add policy by myself and adjust requirements. I have also noticed without HA if any node fails then cause strange behavior in the entire cluster because of missing queues/data etc. 
Personally I hate HA because the majority of messages are stateless. In my experience HA is a little stable when it comes down to node failure but with performance big no. 

On Fri, Feb 10, 2023 at 11:15 AM Albert Braden <ozzzo at yahoo.com> wrote:

 This has been discussed at great length; here are a couple of links that lead to interesting threads:

https://lists.openstack.org/pipermail/openstack-discuss/2021-November/026074.html
https://lists.openstack.org/pipermail/openstack-discuss/2020-August/016362.html

There used to be a useful document here:
https://wiki.openstack.org/wiki/Large_Scale_Configuration_Rabbit

That link now points to the “Large Scale SIG” home page. Does anyone know where the useful RMQ document is? I assume that it is buried somewhere under “Large Scale Journey.”

The bottom line is that, by default, kolla-ansible enables replication but not durable-queues, which is an unstable configuration. I believe that this may have been fixed in a newer version; we are on Train.

https://lists.openstack.org/pipermail/openstack-discuss/2020-August/016524.html
     On Thursday, February 9, 2023, 10:48:11 PM EST, Satish Patel <satish.txt at gmail.com> wrote:  
 
 Folks,

I have deployed 3 node kolla controllers and notice rabbitMQ doesn't have any HA policy for queues. when i rebooted one of the nodes and found some messages got lost. 
Any reason kolla doesn't use HA policies by default? 
If i want to add policies then where should i specify them or any doc you can point me to define policies.    
  
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