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<div class="moz-cite-prefix">Upgrade done. In my case, the engine
was already updated to the latest 4.x release before the hosts.<br>
Following marks 1 and 2 works fine.<br>
After upgrading the cluster compatibility version, got message to
reboot all the VMs.<br>
Don't know if I really have to do that.<br>
<br>
<br>
On 08/23/2016 02:28 PM, Barak Korren wrote:<br>
</div>
<blockquote
cite="mid:CAGJrMmoVZmRdxZGFOcBn=F5jetuEF8dAY7Z+=CGB3jW4iyfjcw@mail.gmail.com"
type="cite">
<p dir="ltr">The following process worked for me:<br>
1. ensure all hosts are running el7 or above, and all clusters
had been upgraded to 3.6 level <br>
2. upgrade vdsm to 4.x on all hosts (assuming you are not using
ovirt-node) by switching to maintainance upgrading and
activating one by one to avoid VM downtime.<br>
3. Upgrade engine by following one of the documented procedures
(we just inatalled a new machine for it and switched DNS after
backup/restore).<br>
4. Once satisfied that illing back to 3.6 engine will not be
needed - upgrade cluster level.</p>
<div class="gmail_extra"><br>
<div class="gmail_quote">בתאריך 23 באוג׳ 2016 12:43, "Arnaud
Lauriou" <<a moz-do-not-send="true"
href="mailto:arnaud.lauriou@irisa.fr">arnaud.lauriou@irisa.fr</a>>
כתב:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
What is the best way to upgrade a datacenter from ovirt 3.6
to 4.0 ?<br>
Upgrade engine, hosts then cluster ?<br>
If right, how do you upgrade a host running ovirt 3.6.7 ?
Simple upgrade or fresh install ?<br>
During the update process of a cluster, some hosts will be
in 3.6.7 and others in 4.0.2, is it a problem for migrating
VMs ?<br>
<br>
Found docs about engine upgrade but not a lot about host and
cluster.<br>
<br>
Thanks,<br>
<br>
Arnaud<br>
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