Sorry for lack of detail.
This is an install of a node on vanilla Oracle Linux 7.5 (which is RH 7.5 for these
purposes) enterprise server.
The exact message is:
An error has occurred during installation of Host myhost: Failed to execute stage
'Setup validation': Distribution oracle version 7.5 is not supported.
[root@sn02 conf]# pwd
/usr/share/ovirt-engine/conf
And the diff.
[root@sn02 conf]# diff osinfo-defaults.properties osinfo-defaults.properties.orig
169,173d168
< os.ol7_5.id.value = 34
< os.ol7_5.name.value = Oracle Linux 7.5
< os.ol7_5.derivedFrom.value = rhel_6x64
< os.ol7_5.devices.display.vramMultiplier.value = 2
<