root@ubuntu01:/etc/ceph_magrathea# ceph-deploy install ubuntu05
[ceph_deploy.cli][INFO  ] Invoked (1.3.5): /usr/bin/ceph-deploy install ubuntu05
[ceph_deploy.install][DEBUG ] Installing stable version emperor on cluster ceph hosts ubuntu05
[ceph_deploy.install][DEBUG ] Detecting platform for host ubuntu05 ...
ssh: connect to host ubuntu05 port 22: Connection refused
[ceph_deploy][ERROR ] RuntimeError: connecting to host: ubuntu05 resulted in errors: HostNotFound ubuntu05

root@ubuntu01:/etc/ceph_magrathea#