Ceph

ceph-create-keys got stuck while deploying recent 10.2.4 (5efb6b1c2c9eb68f479446e7b42cd8945a18dd53).
Syslog contains a lot of the following messages:

Oct 31 16:15:28 saceph-mon1 ceph-create-keys⁴⁷⁸¹: INFO:ceph-create-keys:Cannot get or create admin key
Oct 31 16:15:29 saceph-mon1 ceph-create-keys⁴⁷⁸¹: INFO:ceph-create-keys:Talking to monitor...
Oct 31 16:15:29 saceph-mon1 ceph-create-keys⁴⁷⁸¹: no valid command found; 10 closest matches:
Oct 31 16:15:29 saceph-mon1 ceph-create-keys⁴⁷⁸¹: auth rm <entity>
Oct 31 16:15:29 saceph-mon1 ceph-create-keys⁴⁷⁸¹: auth del <entity>
Oct 31 16:15:29 saceph-mon1 ceph-create-keys⁴⁷⁸¹: auth export {<entity>}
Oct 31 16:15:29 saceph-mon1 ceph-create-keys⁴⁷⁸¹: auth get-or-create <entity> {<caps> [<caps>...]}
Oct 31 16:15:29 saceph-mon1 ceph-create-keys⁴⁷⁸¹: auth caps <entity> <caps> [<caps>...]
Oct 31 16:15:29 saceph-mon1 ceph-create-keys⁴⁷⁸¹: auth get <entity>
Oct 31 16:15:29 saceph-mon1 ceph-create-keys⁴⁷⁸¹: auth get-key <entity>
Oct 31 16:15:29 saceph-mon1 ceph-create-keys⁴⁷⁸¹: auth print-key <entity>
Oct 31 16:15:29 saceph-mon1 ceph-create-keys⁴⁷⁸¹: auth print_key <entity>
Oct 31 16:15:29 saceph-mon1 ceph-create-keys⁴⁷⁸¹: auth list
Oct 31 16:15:29 saceph-mon1 ceph-create-keys⁴⁷⁸¹: Error EINVAL: invalid command