I've already tried that. No use. Cephadm has a problem with the hostname: mixtile@blade3n1:~$ sudo ceph cephadm osd activate blade3n1 Error EIO: Module 'cephadm' has experienced an error and cannot handle commands: invalid literal for int() with base 10: 'blade3n1' I know that one or two people have had this error so far, but I have not found a remedy. Neither did cephadm deploy work: mixtile@blade3n1:~$ sudo cephadm deploy --osd-fsid 9f7fd40d-0698-40b9-8718-62942 b03e263 --name osd.blade3n1 --fsid 8aad3073-39a1-11f1-bf6e-f2704a1efa9b --keyrin g /var/lib/ceph/8aad3073-39a1-11f1-bf6e-f2704a1efa9b/osd.blade3n1/keyring Deprecated command used: <function command_deploy at 0xffffa333cea0> Non-zero exit code 1 from /usr/bin/docker container inspect --format {{.State.St atus}} ceph-8aad3073-39a1-11f1-bf6e-f2704a1efa9b-osd-blade3n1 /usr/bin/docker: stdout /usr/bin/docker: stderr Error response from daemon: No such container: ceph-8aad 3073-39a1-11f1-bf6e-f2704a1efa9b-osd-blade3n1 Non-zero exit code 1 from /usr/bin/docker container inspect --format {{.State.St atus}} ceph-8aad3073-39a1-11f1-bf6e-f2704a1efa9b-osd.blade3n1 /usr/bin/docker: stdout /usr/bin/docker: stderr Error response from daemon: No such container: ceph-8aad 3073-39a1-11f1-bf6e-f2704a1efa9b-osd.blade3n1 Deploy daemon osd.blade3n1 ... Shouldn't it create the necessary container itself? BTW, I've found out that the utilities ceph-osd, ceph-base, and ceph-volume were installed for some reason. I removed them, but that didn't help me either.