Open Stack

Hello,
I'm trying to figure out how to configure RabbitMQ to make it high
available. I have 3 controller nodes and 2 compute nodes, deployed with
kolla with mostly default configuration. The RabbitMQ set to ha-all for all
queues on all nodes, amqp_durable_queues = True
My problem is when I shutdown 1 controller node (or 1  RabbitMQ container)
(master or slave) the whole cluster becomes unstable. Some instances can
not be created, it is stuck on Scheduling, Block Device Mapping, the
volumes not shown or are stuck on creating, the compute node reported dead
randomly,...
I'm looking for documentation to know how Openstack using RabbitMQ,
Openstack behavior when RabbitMQ node down and way to make RabbitMQ HA in a
stable way. Do you have any recommendation?

TIA,
Tan
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