[ovirt-users] Upgrade patch 3.5 -> 3.6

[Yedidyah Bar David]

On Tue, Feb 16, 2016 at 11:58 AM, Johan Kooijman <mail at johankooijman.com> wrote:
> Didi,
>
> Ok, the piece of information on engine still supported on 3.6 was unknown to
> me. Makes my job a lot easier.
>
> What would be the recommended path: first upgrade the nodes to 3.6 and then
> the engine? Or the other way around?

Generally speaking, first engine then nodes. I am pretty certain it's documented
on the wiki, didn't check.

>
> On Tue, Feb 16, 2016 at 8:45 AM, Yedidyah Bar David <didi at redhat.com> wrote:
>>
>> On Tue, Feb 16, 2016 at 9:30 AM, Johan Kooijman <mail at johankooijman.com>
>> wrote:
>> > Yes. I pasted the information on AIO, that was wrong on my end. I have
>> > an
>> > engine running on dedicated hardware and about 20 nodes in this cluster.
>> > I
>> > do like to upgrade without downtime :) I know how to achieve this on the
>> > node-end, but since I have to go from C6 to C7, I wonder what the
>> > procedure
>> > would be for engine.
>>
>> Please explain exactly what you are trying to do.
>>
>> Note that engine is still supported on el6.
>>
>> (new) Hosts are not.
>>
>> all-in-one is running both together, thus is not supported on el6 either.
>>
>> IIRC we do not have a tested procedure to upgrade the engine from C6 to C7
>> yet, see also:
>>
>> https://bugzilla.redhat.com/show_bug.cgi?id=1234257
>> https://bugzilla.redhat.com/show_bug.cgi?id=1285743
>>
>> Best,
>>
>> >
>> > On Mon, Feb 15, 2016 at 9:21 PM, Alexander Wels <awels at redhat.com>
>> > wrote:
>> >>
>> >> On Monday, February 15, 2016 08:21:40 PM Johan Kooijman wrote:
>> >> > Hi Alexander,
>> >> >
>> >> > Thanks for the input! My 3.5 is running on C6 however:
>> >> >
>> >> > Upgrade of All-in-One on EL6 is not supported in 3.6. VDSM and the
>> >> > packages
>> >> > requiring it are not built anymore for EL6
>> >> >
>> >>
>> >> Well that was a piece of information you forgot to mention in your
>> >> initial
>> >> email. So now I am not entirely sure what you are trying to do. Are you
>> >> trying
>> >> to save your existing VMs when you reinstall your machine?
>> >>
>> >>
>> >> > On Mon, Feb 15, 2016 at 3:37 PM, Alexander Wels <awels at redhat.com>
>> >> > wrote:
>> >> > > On Monday, February 15, 2016 02:40:47 PM Johan Kooijman wrote:
>> >> > > > Hi,
>> >> > > >
>> >> > > > Can anybody recommend me best practice upgrade path for an
>> >> > > > upgrade
>> >> > > > from
>> >> > > > oVirt 3.5 on C6 to 3.6 on C7.2?
>> >> > >
>> >> > > The answer sort of depends on what you want. Do you want no
>> >> > > downtime
>> >> > > on
>> >> > > your
>> >> > > VMs or is downtime acceptable. Also are you running hosted engine
>> >> > > or
>> >> > > not?
>> >> > >
>> >> > > This is the basic plan which can be adjusted based on what your
>> >> > > needs
>> >> > > are:
>> >> > >
>> >> > > 1. Update engine from 3.5 to 3.6 (if hosted engine might be
>> >> > > trickier,
>> >> > > not
>> >> > > sure
>> >> > > haven't played with hosted engine).
>> >> > > 2. Create a new 3.6 cluster.
>> >> > > 3. Put 1 host in maintenance (which will migrate the VMs to the
>> >> > > other
>> >> > > hosts).
>> >> > > 4. Remove the host from the DC.
>> >> > > 5. Install C7.2 on the host
>> >> > > 6. Add that host to the new 3.6 cluster.
>> >> > > 7. Optional (you can cross cluster live migrate some VMs from 6 to
>> >> > > 7
>> >> > > (just
>> >> > > not
>> >> > > the other way around, so once the VM is moved its stuck in the new
>> >> > > cluster).
>> >> > > 8. Go to 3 until all hosts are moved.
>> >> > > 9. Your 3.5 cluster should now be empty, and can be removed.
>> >> > > 10. Upgrade your DC to 3.6 (Can't upgrade if any lower clusters
>> >> > > exist).
>> >> > >
>> >> > > If you can have downtime, then just shut down the VMs running on
>> >> > > the
>> >> > > host
>> >> > > in
>> >> > > step 3 before putting it in maintenance. Once the host is moved to
>> >> > > the
>> >> > > new
>> >> > > cluster you can start the VMs.
>> >> > >
>> >> > > Alexander
>> >> > > _______________________________________________
>> >> > > Users mailing list
>> >> > > Users at ovirt.org
>> >> > > http://lists.ovirt.org/mailman/listinfo/users
>> >>
>> >
>> >
>> >
>> > --
>> > Met vriendelijke groeten / With kind regards,
>> > Johan Kooijman
>> >
>> > _______________________________________________
>> > Users mailing list
>> > Users at ovirt.org
>> > http://lists.ovirt.org/mailman/listinfo/users
>> >
>>
>>
>>
>> --
>> Didi
>
>
>
>
> --
> Met vriendelijke groeten / With kind regards,
> Johan Kooijman



-- 
Didi