[ovirt-users] Changing Cluster CPU Type in a single Host with Hosted Engine environment

[Martin Polednik]

On 26/05/16 13:01 +0000, Ralf Braendli wrote:
>Hi
>
>Thanks a lot for you help.
>Just to be sure.
>The Database would be the Datebase on the HostedEngine right ?

Right.

>After this operation should it work directly or is a restart required ?

You should most likely restart the machine (to avoid hitting cached
values).

>And for the Bug report this should be done here https://bugzilla.redhat.com/enter_bug.cgi?classification=oVirt ?

Yes (ovirt-engine, virt team).

>Best Regards
>
>Ralf Brändli
>
>> Am 26.05.2016 um 14:42 schrieb Martin Polednik <mpolednik at redhat.com>:
>>
>> On 26/05/16 07:12 +0000, Ralf Braendli wrote:
>>> Hi
>>>
>>> I have the Problem that I selected the wrong CPU Type throw the setup process.
>>> Is it posible to change it without an new installation ?
>>
>> Hi!
>>
>> I'm afraid this may not be possible using "regular" approach. You
>> could do this by directly changing the cpu type in database, but this
>> is not supported operation.
>>
>> Just an example what would I do in this case (but proceed carefully
>> before changing anything in the DB):
>>
>> $ su - postgres -c "psql -t engine -c \"SELECT
>> split_part(trim(regexp_split_to_table(option_value, ';')), ':', 2)
>> FROM vdc_options WHERE option_name = 'ServerCPUList' AND version =
>> '3.5';\""
>>
>> gives you a nice list of supported cpu names (the database name must
>> be exact, so it's better to paste from that list.
>>
>> Intel Conroe Family
>> Intel Penryn Family
>> Intel Nehalem Family
>> Intel Westmere Family
>> Intel SandyBridge Family
>> Intel Haswell-noTSX Family
>> Intel Haswell Family
>> Intel Broadwell-noTSX Family
>> Intel Broadwell Family
>> AMD Opteron G1
>> AMD Opteron G2
>> AMD Opteron G3
>> AMD Opteron G4
>> AMD Opteron G5
>> IBM POWER8
>>
>> Then you can update the cluster directly:
>>
>> $ su - postgres -c "psql -t engine -c \"UPDATE cluster SET cpu_name =
>> 'YOUR CPU NAME' WHERE name = 'YOUR CLUSTER NAME';\""
>>
>> ('YOUR CPU NAME' and 'YOUR CLUSTER NAME' must of course correspond to
>> the cpu name from the list above and the name of the cluster
>> respectively)
>>
>> Also, could you open a bug on this? I think we should be able to do
>> change the CPU type without all this.
>>
>> Thanks,
>> mpolednik
>>
>>> We have a single Host with a Hosted Engine installed.
>>> With this installation I can’t put the Host into Maintenance Mode because the Hosted Engine will run on this Host.
>>>
>>> The Version we us is 3.5.5-1
>>>
>>> Best Regards
>>>
>>> Ralf Brändli
>>> _______________________________________________
>>> Users mailing list
>>> Users at ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>
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