-> $ ceph orch osd rm 0 3 6 7 8 Unable to find OSDs: ['0', '3', '6', '7', '8'] -> $ ceph osd purge 0 purged osd.0 # !! <= seems this here does the trick, after which /ceph mgr fail/ and health OK. -> $ cephadm rm-daemon --name osd.0 --force --fsid 9f4f9dba-72c7-11f0-8052-525400519d29 Non-zero exit code 3 from systemctl status ceph-9f4f9dba-72c7-11f0-8052-525400519d29@osd.0.service systemctl: stdout ○ ceph-9f4f9dba-72c7-11f0-8052-525400519d29@osd.0.service - Ceph osd.0 for 9f4f9dba-72c7-11f0-8052-525400519d29 systemctl: stdout Loaded: loaded (/etc/systemd/system/ceph-9f4f9dba-72c7-11f0-8052-525400519d29@.service; disabled; preset: disabled) systemctl: stdout Active: inactive (dead) ERROR: Daemon not found: osd.0. See `cephadm ls` many thanks!