I working on CentOS7 and I install ceph by manual build
./autogen.sh
./configure
make
make install
and manual deploy by follow this link http://ceph.com/docs/master/install/manual-deployment/
but ceph doesn't exist in directory /etc/rc.d/init.d/
Failed to issue method call: Unit ceph.service failed to load: No such file or directory
So, I can't start service.
In document of manual deploy it's said I have to use command
sudo /etc/rc.d/init.d/ceph start mon.node1
In CentOS7 use systemd
So, use command sudo systemctl start ceph-osd@0
will work!!!