I wanted to install two hosts one on f19 and the second on el6. I created additional cluster for el6. Host installation for el6 worked well and it joined the cluster without any issues. Whereas host in f19 was successfully deployed but it failed to join the cluster due to: Host fedora is compatible with versions (3.0,3.1,3.2,3.3) and cannot join Cluster Default which is set to version 3.4. Here are the versions that I use: engine: Name : ovirt-engine Arch : noarch Version : 3.4.0 Release : 0.5.beta1.fc19 Size : 1.5 M Repo : installed fedora host: Name : vdsm Arch : x86_64 Version : 4.14.1 Release : 2.fc19 Size : 2.9 M Repo : installed el6 host: Name : vdsm Arch : x86_64 Version : 4.14.1 Release : 2.el6 Size : 2.9 M Repo : installed Both clusters are set to be compatible with 3.4. Is there anything that I am missing? Piotr