Hi all! Sorry for my english, I am russian) We get the same error on diffrent linux distro(CentOS 6.4 & SuSe 11), diffrent ceph version (0.67,0.72,0.8). Point of error: We want to create new cluster with non-standart name(for example cephtst): [root at admin ceph]# ceph-deploy --cluster cephtst new mon Cluster creates Ok. And then we want to create monitor: [root at admin ceph]# ceph-deploy --cluster cephtst mon create mon We get a error related to name of admin socket: [root at admin ceph]# ceph-deploy --cluster cephtst mon create mon [ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf [ceph_deploy.cli][INFO ] Invoked (1.5.1): /usr/bin/ceph-deploy --cluster cephtst mon create mon [ceph_deploy.mon][DEBUG ] Deploying mon, cluster cephtst hosts mon [ceph_deploy.mon][DEBUG ] detecting platform for host mon ... [mon][DEBUG ] connected to host: mon [mon][DEBUG ] detect platform information from remote host [mon][DEBUG ] detect machine type [ceph_deploy.mon][INFO ] distro info: CentOS 6.5 Final [mon][DEBUG ] determining if provided host has same hostname in remote [mon][DEBUG ] get remote short hostname [mon][DEBUG ] deploying mon to mon [mon][DEBUG ] get remote short hostname [mon][DEBUG ] remote hostname: mon [mon][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf [mon][DEBUG ] create the mon path if it does not exist [mon][DEBUG ] checking for done path: /var/lib/ceph/mon/cephtst-mon/done [mon][DEBUG ] create a done file to avoid re-doing the mon deployment [mon][DEBUG ] create the init path if it does not exist [mon][DEBUG ] locating the `service` executable... [mon][INFO ] Running command: /sbin/service ceph -c /etc/ceph/cephtst.conf start mon.mon [mon][DEBUG ] === mon.mon === [mon][DEBUG ] Starting Ceph mon.mon on mon...already running [mon][INFO ] Running command: ceph --cluster=cephtst --admin-daemon /var/run/ceph/cephtst-mon.mon.asok mon_status [mon][ERROR ] admin_socket: exception getting command descriptions: [Errno 2] No such file or directory [mon][WARNIN] monitor: mon.mon, might not be running yet [mon][INFO ] Running command: ceph --cluster=cephtst --admin-daemon /var/run/ceph/cephtst-mon.mon.asok mon_status [mon][ERROR ] admin_socket: exception getting command descriptions: [Errno 2] No such file or directory [mon][WARNIN] monitor mon does not exist in monmap [mon][WARNIN] neither `public_addr` nor `public_network` keys are defined for monitors [mon][WARNIN] monitors may not be able to form quorum Unhandled exception in thread started by Error in sys.excepthook: Original exception was: And in this time in folder /var/run/ceph/ present file with name ceph-mon.mon.asok Why does name of admin socket not changes to right?