Hi Team, I would like to seek some help regarding the issue I am facing while performing in series upgrade on the Antelope version. We have currently deployed our cluster with *2023.1 Antelope *version. The cluster was deployed on a clean environment by cleaning up any previous kolla openstack installation. We have not observed any issues with this environment so far. For a feature I am working on, I had to *put a patch into GLANCE image* and rebuild all *kolla images with a new tag*. I have attempted to upgrade the cluster using both *kolla-deploy *and *kolla-upgrade *methods, but both methods have left the *cluster in degraded condition*. The issue seems to be mainly with failure of communication between *neutron-server *and all/some *neutron-agents, *due to which the neutron-server sees *all/some* *neutron-agents dead*. *Rabbitmq *itself seems to be doing fine. The issue is very consistent. Is this a known behavior? And am I using the correct kolla tools to perform the in series upgrade. Appreciate any help. Thanks, Shrishail