Hi Owen,
Welcome to the community!
As the version of oVirt is being increased, each version has new features, views, and developments.
You can follow the different releases here: https://www.ovirt.org/release/
Each release has its release notes, which specify the required OS for it.
For example, the latest 4.4.4 version requires "Red Hat Enterprise Linux 8.2/8.3 (8.3 recommended) and CentOS Linux 8.2 (or similar)". (see https://www.ovirt.org/release/4.4.4/).
The requirement for oVirt versions >4.4.0 is "CentOS Linux 8.1 (or similar)".

You can view the different version and choose the best one for you,
as we recommend to test the latest version and developments.

About being part of the community:
By sending this email you're already part of it :)

On the IRC, make sure you've connected to the #ovirt channel on the irc.oftc.net server
You can view additional ways here: https://www.ovirt.org/community/.

Feel free to ask more questions.

Regards,
Shani Leviim


On Tue, Jan 26, 2021 at 9:43 AM 欧文 <unsayablelove@gmail.com> wrote:
Dear:
Hello. My name is Owen. First, I appreciate you spend time to check my email. Recently I want to use oVirt to build a project. But after reading the official document, I have some questions to ask. The project is intended to set up a physical server that is used to implement virtualization, Variable quantity of thin clients for users. But I don't know which environment types I should use to deploy. The number two question is why the system environment is different between each version of o-virt?Because centos 7 is the major version. But so many versions of o-virt is not centos 7 or centos 8.can you tell me the reason. Thank you.At last, I have a question.I ever joined the IRC, but there is no response to answer my question. Could you tell me where I can take part in the community with developers who develope o-virt.Thanks  
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