If you're content with the current RHEL licensing terms, its a great choice for now.
Noone can tell you the future with certainty. 

If you're just creating a virtualization cluster with external storage, why not use the node-ng installer iso.
It will be updated as necessary for each new released version of oVirt.
Today it is CentOS8.3 based, but it will easily be changed once oVirt on Stream is ready.












On Sun, Mar 7, 2021 at 5:27 AM <sinan@turka.nl> wrote:
I want to set up a small cluster consisting of 2 Hypervisor nodes (self-hosted engine) with shared storage (SAN, ISCSI).

According to https://www.ovirt.org/download/ the following Operating Systems are supported with the latest oVirt version (4.4.4):
- Red Hat Enterprise Linux 8.3
- CentOS Linux 8.3
- CentOS Stream (Tech Preview)

My doubts are:
- RHEL 8.3 is free to use up tp 16 hosts, but until when? Red Hat can decide at anytime to change their subscription program.
- CentOS Linux is no more, support will stop at the end of 2021.
- CentOS Stream is in Tech Preview. I don't like running production environments on "tech preview / beta" versions.

I would say CentOS 7, it will receive maintenance updates up to 2024, and switch to RHEL in 2024 if the free-to-use program is still active. Unfortunately, CentOS 7 seems not to be supported.

On what Operating System are you running oVirt 4.4.4 and why? Any feedback and advice is welcome. Thanks!
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