Hi Callum,
For some reason, when installing the host the management network wasn't
attached to the host.
Since the management network is required, due to
https://bugzilla.redhat.com/1570388
<
https://bugzilla.redhat.com/show_bug.cgi?id=1570388> the host stuck in non
operational <-> activating states.
You have two options -
1. Updating ovirt to ovirt-engine-4.2.3.4 and re-installing the host.
2. Trying to understand why the management network wasn't attached to the
host at the first place.
If you choose option 2 please attach the full engine logs (engine.log,
server.log) and vdsm logs (vdsm.log, supervdsm.log).
Thanks,
Alona.