Even though formally part of the linux kernel, you need to install and enable the ovirt-guest agent for proper polling of the machine.
lives in EPEL, good idea to install this for most updated packages unless you want to remain RH downstream only yum -y install epel-release #now install it (and dependencies) yum -y install ovirt-guest-agent #run it systemctl start ovirt-guest-agent.service #make it run on reboot systemctl enable ovirt-guest-agent.service
Once active, you should now ssee the IP, FQDN, and more realtime stats in oVirt web manager.