On Mon, May 4, 2015 at 11:36 AM, Massimo Mad <mad1969it@gmail.com> wrote:

hello,
where can I find a document that explains how to upgrade my oVirt infrastructure?
My infrastructure is currently composed of host centos 6.x who would like to upgrade to host centos 7.x.
I can co-exist in the same cluster temporarily host with different releases or should I create a new cluster and then migrate vm?

Regards
Massimo

depending on the version you are going to upgrade to, you will find related release notes page. Eg for just released 3.5.2:

http://www.ovirt.org/OVirt_3.5.2_Release_Notes

Previous releases notes page:

http://www.ovirt.org/Category:Releases

Also, the Administrator Guide is a further reference page, eg for info regarding backups before upgrade or for compatibility mode change settings for your infra:

http://www.ovirt.org/OVirt_Administration_Guide

HIH,

Gianluca