I just tested adding a Centos 6.6 and Centos 7 host on a oVirt Cluster and
it is not possible:

Not possible to mix RHEL 6.x and 7.x hosts in one cluster. Tried adding
RHEL - 6 - 7.el6.centos.12.3 host to a cluster with RHEL - 7 -
1.1503.el7.centos.2.8 hosts.

Using the same data storage for multiple Clusters seems possible.

Thanks for all the help today,

Regards,
Paul

Op do 12 nov. 2015 om 10:52 schreef Paul Groeneweg | Pazion <p...@pazion.nl
>:

> Hmm, that would be a pity, then I also need a second shared storage.
>
> Anyone tested mixed el6 and el7 cluster on 3.5.5 or 3.6 ?
>
> Met vriendelijke groeten,
> Paul Groeneweg
>
>
> Op do 12 nov. 2015 om 10:48 schreef Gianluca Cecchi <
> gianluca.cec...@gmail.com>:
>
>> On Thu, Nov 12, 2015 at 10:44 AM, Gianluca Cecchi <
>> gianluca.cec...@gmail.com> wrote:
>>
>>> On Thu, Nov 12, 2015 at 10:40 AM, Paul Groeneweg | Pazion <
>>> p...@pazion.nl> wrote:
>>>
>>>> OK, I understand, I would need to upgrade my Hosts to go to 3.6.
>>>>
>>>> I think I read somewhere I can't mix EL6 and EL7 hosts in the same
>>>> cluster, is this true?
>>>>
>>>>
>>> You can have a mix of EL6 and EL7 hosts with 3.5 cluster compatibility
>>> in place.
>>> But you have to notice that you can do live migrations in direction EL6
>>> --> EL7 but not the reverse.
>>> SO you have to care about this for your migration strategy.
>>> Probably bettere to update at least two hosts to EL7 before beginning to
>>> place critical VMs on them.
>>> HIH,
>>> Gianluca
>>>
>>
>> Opsss, perhaps I'm wro and you have to create a different cluster in the
>> same datacenter and progressively migrate VMs from hosts in first cluster
>> to hosts in second cluster.
>> At least so it was in 3.5.1.... did it change?
>>
>> See
>> http://lists.ovirt.org/pipermail/users/2015-May/032818.html
>> and bugzilla
>> https://bugzilla.redhat.com/show_bug.cgi?id=1150191
>>
> --
> Met vriendelijke groeten,
>
> Paul Groeneweg
> Pazion
> Webdevelopment  -  Hosting  -  Apps
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Met vriendelijke groeten,

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Pazion
Webdevelopment  -  Hosting  -  Apps

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