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. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://lists.openstack.org/pipermail/openstack-discuss/attachments/20230210/2b244036/attachment.htm>