[root@ostctrl ~]# su -s /bin/sh -c "nova-manage api_db sync" nova
Deprecated: Option "rpc_conn_pool_size" from group "DEFAULT" is deprecated. Use option "rpc_conn_pool_size" from group "oslo_messaging_rabbit".
[root@ostctrl ~]# su -s /bin/sh -c "nova-manage cell_v2 map_cell0" nova
Deprecated: Option "rpc_conn_pool_size" from group "DEFAULT" is deprecated. Use option "rpc_conn_pool_size" from group "oslo_messaging_rabbit".
Cell0 is already setup