documentation URL:

https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/17.1/html/installing_and_managing_red_hat_openstack_platform_with_director/assembly_replacing-controller-nodes#proc_cleaning-up-after-controller-node-replacement_replacing-controller-nodes

section:

20.8. Cleaning up after Controller node replacement

step:

step 11. Clean the RabbitMQ cluster.

detailed description:

1. `sudo` is missing for podman exec command
2. command prompt should be something like `[root@controller-0 /]#` after executing `sudo podman exec -it <container_name> bash`