Hi Ishan, my first question would be, how many controller nodes and specifically, rabbitmq nodes you are running inside your Openstack cluster? You should be following the general guidelines for running any raft consensus based distributed system and only run an odd number of systems, e.g. 3 or 5 control nodes. Can you confirm that this is the case in your setup? If you e.g. run a two node setup such errors are indeed expected. See also our production architecture guide: https://docs.openstack.org/kolla-ansible/latest/admin/production-architectur...
Control - Cloud controller nodes which host control services like APIs and databases. This group should have odd number of nodes for quorum.
If you are running an odd number of control nodes and you're still facing this issue, I would be curious to know the rabbitmq cluster state before you add or remove a node, because this should theoretically just work. But maybe there is another issue with your cluster. HTH -- Sven Kieske Senior Cloud Engineer Mail: kieske@osism.tech Web: https://osism.tech OSISM GmbH / Talweg 8 / 75417 Mühlacker / Deutschland Geschäftsführer: Christian Berendt Unternehmenssitz: Mühlacker Amtsgericht: Stuttgart, HRB 756139