Hey there, I've been running into a really frustrating issue while trying to set up a self-hosted engine. I've tried multiple times, with different distributions like CentOS Stream 9, AlmaLinux 9.5, and Rocky Linux 9, but I keep hitting the same wall. 
 Essentially, during the engine configuration, I get an error saying that https://mirroros.centos.org is unreachable.
I've tried all the repository workarounds I've seen online, changing the pointers and everything, but nothing seems to help. 
The weird thing is, if I install the engine on a dedicated server, it works fine. It's only when I try to deploy a self-hosted engine that I get this mirror error.
Then, just to see what would happen, I gave Oracle Linux a shot. And guess what? 
 The self-hosted engine configured perfectly, without even trying to touch those CentOS repositories. 
So, that's definitely pointing to some kind of distribution-specific issue.
On top of that, I've also run into another problem with the 4.5 distribution related to VLANs. 
I'm working in a data center with a bunch of VLAN-certified networks. 
 I wanted to set up oVirt 4.5, using a self-hosted engine, and assign one of those VLAN networks to ovirtmgmt
 But the installation just flat-out fails because it only seems to accept physical network devices. 
 The only way I could get it to work was to put a switch in place to mask the VLAN, which is a bit of a clunky workaround. 
 My older 4.4-based virtualizer didn't have any of these problems, so I'm wondering if something's changed significantly in 4.5. Any ideas?

Best regards

On Sun, 2025-03-02 at 20:56 +0000, Geoff O'Callaghan wrote:
Hi

I'm not sure where things are going wrong for you, so I built a new Centos 9 Stream system and was able to install a self-hosted appliance on it - ie. It got turned into a node and the engine appliance was deployed OK. I just wanted to make sure the current process worked.

Can you provide more information on what/how you're doing the installation?  It might be that the documentation is wrong, but I will fix it if you can tell me where you're going wrong. 


Thanks
Geoff


From: fiorletta--- via Users
Sent: Tuesday, February 25, 2025 3:30 AM
To: users@ovirt.org
Subject: [ovirt-users] Re: Couldn't resolve host name for http://mirrorlist.centos.org/?release=8-stream&arch=x86_64&repo=storage-ceph-pacific

I have the same problem.
Centos stream 9, ovirt 4.5 the errore is present only on self-hosted-engine.
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