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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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