I found a way.
[root@node02 yum.repos.d]# cat luminious.repo
[ovirt-4.2-centos-ceph-luminous]
enabled=1
name = CentOS-7 - ceph luminous
baseurl =
http://mirror.centos.org/centos/7/storage/$basearch/ceph-luminous/
gpgcheck = 1
enabled = 1
gpgkey =
https://raw.githubusercontent.com/CentOS-Storage-SIG/centos-release-stora...
includepkgs = librados2 librbd1 lttng-ust