I only have a all-in-one kolla instance at hand, but there's no user 
"nova", only a user "openstack". Or did you define a list of users to 
create in main.yml?

# List of RabbitMQ users to create. Each item should contain the following
# fields:
# 'user'
# 'password'
# 'vhost'
# 'tags'
# Virtual hosts in this list will also be created.
service_rabbitmq_users: []

How do your transport_urls look like (mask sensitive information)?
What's the exact error message below the retries? There are a couple 
of questions out there, e. g. [1] or this bug [2]. Can you check if 
your version contains the fix for [2]?

[1] 
https://lists.openstack.org/pipermail/openstack-discuss/2022-December/031486.html
[2] https://bugs.launchpad.net/kolla-ansible/+bug/1946506

Zitat von Winicius Allan <winiciusab12@gmail.com>:

> Hello Eugen, thanks for the reply.
>
> I'm using kolla-ansible in Zed release, Ubuntu 22.04 in a
> multinode deployment.
>
> Reconfigure is basicaly a set of playbook in kolla that reads the
> configuration file and configure all services or specific one, if tag is
> passed. I ran that to reconfigure all services after packages update, to
> make sure everything is working fine.
>
> So in those tasks, it ensures the Nova user exists in RabbitMQ, but
> doesn't. I don't know if i should run something else before it.
>
> Em qui., 15 de fev. de 2024 às 11:58, Eugen Block <eblock@nde.ag> escreveu:
>
>> Hi,
>>
>> could you be more specific what you mean by "reconfiguring RabbitMQ
>> and Nova"? What exactly did you try? I'm not very familiar with kolla
>> so hopefully someone else can shed more light. But for starters it
>> would probably help to have more information, OS version, openstack
>> version etc. And as already mentioned, what exactly you reconfigured.
>>
>> Zitat von Winicius Allan <winiciusab12@gmail.com>:
>>
>> > Hello o/,
>> >
>> > After an upgrade of nodes packages, we have been facing a problem when
>> > reconfiguring RabbitMQ and Nova. In the tasks that ensures RabbitMQ users
>> > exists the output of task is:
>> >
>> > FAILED - RETRYING: [xxxx]: nova | Ensure RabbitMQ users exist (5 retries
>> > left).
>> > FAILED - RETRYING: [xxxx]: nova | Ensure RabbitMQ users exist (4 retries
>> > left).
>> > FAILED - RETRYING: [xxxx]: nova | Ensure RabbitMQ users exist (3 retries
>> > left).
>> > FAILED - RETRYING: [xxxx]: nova | Ensure RabbitMQ users exist (2 retries
>> > left).
>> > FAILED - RETRYING: [xxxx]: nova | Ensure RabbitMQ users exist (1 retries
>> > left).
>> >
>> > I've already tried to redeploy rabbit and reconfigure after that, but
>> does
>> > not work neither
>> >
>> > Anyone can help? I'm unable to perform any operation in my environment.
>> >
>> > Thanks!
>> > Winicius.
>>
>>
>>
>>