/my-cluster$ ceph-deploy mon create ceph-node1-mon
[ceph_deploy.cli][INFO  ] Invoked (1.2.7): /usr/bin/ceph-deploy mon create ceph-node1-mon
[ceph_deploy.mon][DEBUG ] Deploying mon, cluster ceph hosts ceph-node1-mon
[ceph_deploy.mon][DEBUG ] detecting platform for host ceph-node1-mon ...
[ceph_deploy.sudo_pushy][DEBUG ] will use a remote connection with sudo
[ceph_deploy.mon][INFO  ] distro info: Ubuntu 12.04 precise
[ceph-node1-mon][DEBUG ] determining if provided host has same hostname in remote
[ceph-node1-mon][DEBUG ] deploying mon to ceph-node1-mon
[ceph-node1-mon][DEBUG ] remote hostname: ceph-node1-mon
[ceph-node1-mon][INFO  ] write cluster configuration to /etc/ceph/{cluster}.conf
[ceph-node1-mon][ERROR ] Traceback (most recent call last):
[ceph-node1-mon][ERROR ]   File "/usr/lib/python2.7/dist-packages/ceph_deploy/util/decorators.py", line 10, in inner
[ceph-node1-mon][ERROR ]   File "/usr/lib/python2.7/dist-packages/ceph_deploy/conf.py", line 13, in write_conf
[ceph-node1-mon][ERROR ] IOError: [Errno 2] No such file or directory: '/etc/ceph/ceph.conf.2271.tmp'
[ceph-node1-mon][DEBUG ] checking for done path: /var/lib/ceph/mon/ceph-ceph-node1-mon/done
[ceph-node1-mon][DEBUG ] done path does not exist: /var/lib/ceph/mon/ceph-ceph-node1-mon/done
[ceph-node1-mon][INFO  ] creating keyring file: /var/lib/ceph/tmp/ceph-ceph-node1-mon.mon.keyring
[ceph-node1-mon][INFO  ] create the monitor keyring file
[ceph-node1-mon][INFO  ] Running command: ceph-mon --cluster ceph --mkfs -i ceph-node1-mon --keyring /var/lib/ceph/tmp/ceph-ceph-node1-mon.mon.keyring
[ceph-node1-mon][ERROR ] Traceback (most recent call last):
[ceph-node1-mon][ERROR ]   File "/usr/lib/python2.7/dist-packages/ceph_deploy/hosts/common.py", line 72, in mon_create
[ceph-node1-mon][ERROR ]   File "/usr/lib/python2.7/dist-packages/ceph_deploy/util/decorators.py", line 10, in inner
[ceph-node1-mon][ERROR ]   File "/usr/lib/python2.7/dist-packages/ceph_deploy/util/wrappers.py", line 6, in remote_call
[ceph-node1-mon][ERROR ]   File "/usr/lib/python2.7/subprocess.py", line 511, in check_call
[ceph-node1-mon][ERROR ]     raise CalledProcessError(retcode, cmd)
[ceph-node1-mon][ERROR ] CalledProcessError: Command '['ceph-mon', '--cluster', 'ceph', '--mkfs', '-i', 'ceph-node1-mon', '--keyring', '/var/lib/ceph/tmp/ceph-ceph-node1-mon.mon.keyring']' returned non-zero exit status 10
[ceph-node1-mon][ERROR ] unable to find any monitors in conf. please specify monitors via -m monaddr or -c ceph.conf
[ceph-node1-mon][ERROR ] ceph-mon: warning: no initial monitors; must use admin socket to feed hints
[ceph-node1-mon][ERROR ] ceph-mon: generated monmap has no fsid; use '--fsid <uuid>'
[ceph-node1-mon][ERROR ] 2013-10-23 12:01:38.789058 7fd437a13780 -1 did not load config file, using default settings.
[ceph_deploy.mon][ERROR ] Failed to execute command: ceph-mon --cluster ceph --mkfs -i ceph-node1-mon --keyring /var/lib/ceph/tmp/ceph-ceph-node1-mon.mon.keyring
[ceph_deploy][ERROR ] GenericError: Failed to create 1 monitors