[ovirt-users] oVirt upgrade

[Yedidyah Bar David]

On Tue, Aug 9, 2016 at 8:39 PM, Budur Nagaraju <nbudoor at gmail.com> wrote:
> HI
>
> How to upgrade oVirt3.5 to 4 ? am using centos6.7.

First upgrade or reinstall your hosts with el7.
oVirt 3.6+ does not provide packages for el6. el6 hosts will
still work, but easiest to upgrade to el7 in 3.5.

If you are using hosted-engine, you can follow [1].

Then upgrade to 3.6 using regular docs [2].

In 4.0, the engine is also el7 only. To upgrade, use engine-backup
to backup, then reinstall the machine with el7, then restore. I do
not think we have a special page for this, but you can follow the
doc text of [3], which is also copied in the 4.0 release notes [4].
Please review [5] for more information about engine backup and restore.
If you using hosted-engine, you can use the new upgrade tool to upgrade
the engine vm using the engine appliance. Not sure that's properly
documented either, see also [6]. Also note that this bug is for 4.0.2,
to be released soon.

As always, if at all possible, better try first on a test system,
especially if it's in production, and backup everything beforehand,
including your VMs etc.

Best regards,

[1] https://www.ovirt.org/documentation/how-to/hosted-engine-host-OS-upgrade/
[2] http://www.ovirt.org/develop/release-management/releases/3.6/
[3] https://bugzilla.redhat.com/show_bug.cgi?id=1318580
[4] https://www.ovirt.org/release/4.0.0/
[5] http://www.ovirt.org/develop/release-management/features/engine/engine-backup/
[6] https://bugzilla.redhat.com/show_bug.cgi?id=1319457
-- 
Didi