Hello, I'm trying to mount RBD using rbd map, but I get this error message: # rbd map hdb_backup/VCT --id client --keyring /etc/ceph/ceph.client.VCT.keyring rbd: couldn't connect to the cluster! Checking on Ceph server the required permission for relevant keyring exists: # ceph-authtool -l /etc/ceph/ceph.client.VCT.keyring [client.VCT] key = AQBj3LZjNGn/BhAAG8IqMyH0WLKi4kTlbjiW7g== # ceph auth get client.VCT [client.VCT] key = AQBj3LZjNGn/BhAAG8IqMyH0WLKi4kTlbjiW7g== caps mon = "allow r" caps osd = "allow rwx pool hdb_backup object_prefix rbd_data.b768d4baac048b; allow rwx pool hdb_backup object_prefix rbd_header.b768d4baac048b; allow rx pool hdb_backup object_prefix rbd_id.VCT" exported keyring for client.VCT Can you please advise how to fix this error? THX