This might help:
https://lists.ovirt.org/pipermail/users/2017-January/079157.html

On Thu, May 28, 2020 at 10:17 AM Gianluca Cecchi <[email protected]>
wrote:

>
>
> On Wed, May 27, 2020 at 4:13 PM Mark R <[email protected]> wrote:
>
>> Replying to my own post here, I've verified that it's currently not
>> possible to do a greenfield deploy of oVirt 4.4.0 w/ hosted engine on EPYC
>> CPUs due to the system setting a requirement of 'virt-ssbd' for the final
>> HE definition after the move to shared storage. The local HE runs perfectly
>> through the setup process because it correctly uses 'amd-ssbd' but
>> unfortunately that doesn't stick after the disks are moved.
>>
>> You can work around it via 'virsh -r dumpxml HostedEngine > /tmp/he.xml',
>> then editing that file to simply change 'virt-ssbd' to 'amd-ssbd'. Start it
>> via 'virsh create /tmp/he.xml' and now it runs fine. You can get into the
>> admin interface and if you want to run something hacky could at this point
>> change the cluster CPU type from 'Secure AMD EPYC' to just 'AMD EPYC', take
>> everything down and bring it back up cleanly... hosted engine will now work
>> because the requirement for virt-ssbd (not available on EPYC when using
>> CentOS 8.1 or presumably RHEL 8, amd-ssbd is needed) is gone.
>>
>>
> I would like to test it during final stage of deployment, but the "virsh
> create" command requires a password.
>
> [root@novirt2 log]# virsh create /tmp/he.xml
> Please enter your authentication name:
>
> I don't remember how to setup a user so that I can run it on oVirt host..
> any input?
>
> Just for my testing lab in 4.4. obviously...
> Thans,
> Gianluca
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