Answer by user1039217 for kolla-ansible openstack bootstrap-servers failed on enabling ceph apt repository (ubuntu 22.04)

This problem is more likely the ceph repository problem for ubuntu 22.04 and it happens to affect our environment, that is ubuntu 22.04 nodes, external ceph storage and zun enabled.

Also in our /etc/kolla/globals.yml this was enabled according to the document of kolla-ansible 16.1.0 external ceph.

zun_configure_for_cinder_ceph: "yes"

I figure we don't need that feature and turned it off. Bootstrap-servers was successful.