Hello, I have a Ceph cluster created by orchestrator Cephadm. It consists of 3 Dell PowerEdge R730XD servers. This cluster's hard drives used as OSD were configured as RAID 0. The configuration summery is as the following: ceph-node1 (mgr, mon) Public network: 172.16.7.11/22 Cluster network: 10.10.10.11/24, 10.10.10.14/24 ceph-node2 (mgr, mon) Public network: 172.16.7.12/22 Cluster network: 10.10.10.12/24, 10.10.10.15/24 ceph-node3 (mon) Public network: 172.16.7.13/22 Cluster network: 10.10.10.13/24, 10.10.10.16/24 Recently I removed all OSDs from node3 with the following set of commands sudo ceph osd out osd.3 sudo systemctl stop ceph@osd.3.service sudo ceph osd rm osd.3 sudo ceph osd crush rm osd.3 sudo ceph auth del osd.3 After this, I configured all OSD hard drives as non-RAIN from the server settings and tried to add the hard drives as OSD again. First I used the following command to add them automatically ceph orch apply osd --all-available-devices --unmanaged=false But this was generating the following error in my Ceph GUI console CEPHADM_APPLY_SPEC_FAIL: Failed to apply 1 service(s): osd.all-available-devices I am also unable to add the hard drives manually with the following command sudo ceph orch daemon add osd ceph-node3:/dev/sdb Can anyone please help me with this issue? I really appreciate any help you can provide.