The new Ovirt Node installation script in v4.2.3 automatically adds the gluster hosts
after initial hosted engine setup. This caused major problems as I had used different
FQDNs on a different VLAN to initially setup my gluster nodes [to isolate storage traffic]
- but then put them onto the "ovirtmgmt" network. Because they were gluster
nodes - I could not remove them from the ovirtmgmt network to re-install on the proper
management VLAN.
I recommend removing the auto-installation of the other gluster nodes - or at least
provide an option to decline the automatic addition of the other nodes.