Host neutron
   Hostname neutron
   User centos
Host controller
   Hostname controller
   User centos
Host compute1
   Hostname compute1
   User centos
Host compute2
   Hostname compute2
   User centos
Host storage1
   Hostname storage1
   User ceph
Host storage2
   Hostname storage2
   User ceph
Host storage3
   Hostname storage3
   User ceph