Comment 6 for bug 1812935

Setup seem incomplete, see the following traceback from nova-conductor:

2019-01-28 19:05:15.241 21 ERROR nova.conductor.manager [req-083c4907-07b0-4dc8-bb0f-dff8aaf598e4 45c77dea28a445858e29c376235a021b 96b4d23c11ea4fa8baa6f26761bb2ae8 - default default] No host-to-cell mapping foun│·
d for selected host herve.localdomain. Setup is incomplete.: nova.exception.HostMappingNotFound: Host 'herve.localdomain' is not mapped to any cell

During stack deployment we can see in the paunch log that the nova_cellv2_discover_hosts exit in error.
This step try to register services and it fail. See the following traceback => http://paste.openstack.org/show/744238/

We can observe that this paunch command was started at 9:31:13 and we observe that the original memcache error described in this issue occur at 09:31:22 (http://paste.openstack.org/show/744241/) and is due to the fact that services are unregistred. The paunch command exit in error at 09:36:59 certainly due to a timeout or something like that.