[Engine-devel] [oVirt 3.3 Localization Question #8] Cluster Policy Function Label "Weights Modules"

[Yuko Katabami]

On 08/05/2013 05:03 PM, Gilad Chaplik wrote:
> ----- Original Message -----
>> From: "Yuko Katabami" <ykatabam at redhat.com>
>> To: engine-devel at ovirt.org
>> Sent: Monday, August 5, 2013 9:52:18 AM
>> Subject: [Engine-devel] [oVirt 3.3 Localization Question #8] Cluster Policy Function Label "Weights Modules"
>>
>> Hello all,
>>
>> I would like to ask another question:
>>
>> File: ApplicationConstants
>> Resource ID: clusterPolicyFunctionLabel
>> String: Weights Modules
>> Question: Could anyone please describe what this is referring to and where on
>> the portal it appears?
> Hi Yuko,
>   
> it appears at: Configure (system level entity) -> cluster policies.
>
> I'm going to add descriptions (=blue info icons) next to each section with the following text:
>
> Filter:
> Filters represents hard constraints for running a VM.
> Each filter implements logic which validates a minimum requirements in order to run a VM.
> For example, minimum RAM, CPU, designated host, etc. Hosts who fail this validation
> are filtered out from the current request.
>
> Weight:
> Weights represent soft constraints for running a VM.
> Note: in a weighting system, lower score is considered better. So a host with the
> lowest score (weight) is the one the scheduler will choose.
> Each weight module scores any given host based on an optimization logic the module
> implements. For example, if we want to optimize for CPU load, the module will score
> each host based on its known CPU load.
> Weight modules scores are being summed, so it is possible to have more than one
> weight module. The way to prioritize modules is by increasing / decreasing a factor.
>
> Balance:
> Load balancing is a logic that determines which hosts are over-utilized and which
> are under-utilized. Then, the balancing mechanism calls the scheduler trying to
> migrate a VM from an over-utilized to an under-utilized host.
> Note that it is important to choose a balancing module that does not conflict with
> the weight module. Such a policy may destabilize this cluster.
> Only a single load-balancing module is supported.
>
> Custom properties:
> These properties are needed for one of the above modules, so they will appear when
> needed. Setting it when creating a policy generates the default values, which may
> be overridden in each specific cluster using this policy.
>
> (high level feature description: http://wiki.ovirt.org/Features/oVirtScheduler).
>
> Thanks,
> Gilad.
Hi Gilad,
Thank you very much for your detailed description.
It makes a clear sense now.

Kind regards,

Yuko
>
>> Thank you,
>>
>> Yuko
>>
>> --
>> Regards,
>>
>> Yuko Katabami (方波見裕子)
>> Technical Translator II
>> NAATI Accredited Professional Translator (English into Japanese) #28138
>> RHCSA #111-119-244
>> Mobile: +61 415 847 352
>> Email: ykatabam at redhat.com
>>
>>
>>
>> Red Hat, Asia-Pacific Pty Ltd
>> Level 1, 193 North Quay
>> Brisbane 4000
>> Office: +61 7 3514 8100
>> Fax: +61 7 3514 8199
>> Website: www.redhat.com
>>
>> Facebook: Red Hat APAC | Red Hat Japan | Red Hat Korea | JBoss APAC
>> Twitter: Red Hat APAC | Red Hat ANZ
>> LinkedIn: Red Hat APAC | JBoss APAC
>>
>> _______________________________________________
>> Engine-devel mailing list
>> Engine-devel at ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/engine-devel
>>

-- 
Regards,

Yuko Katabami (方波見裕子)
Technical Translator II
NAATI Accredited Professional Translator (English into Japanese) #28138
RHCSA #111-119-244
*Mobile:* +61 415 847 352
*Email:* ykatabam at redhat.com

Red Hat

*Red Hat, Asia-Pacific Pty Ltd*
Level 1, 193 North Quay
Brisbane 4000
*Office:* +61 7 3514 8100
*Fax:* +61 7 3514 8199
*Website:* www.redhat.com <http://www.redhat.com>

*Facebook:* Red Hat APAC <http://www.facebook.com/redhatapac> | Red Hat 
Japan <http://www.facebook.com/redhatjapan> | Red Hat Korea 
<http://www.facebook.com/redhatkorea> | JBoss APAC 
<http://www.facebook.com/JBossAPAC>
*Twitter:* Red Hat APAC <http://www.twitter.com/red_hat_apac> | Red Hat 
ANZ <http://www.twitter.com/redhatanz>
*LinkedIn:* Red Hat APAC <http://www.linkedin.com/groups?gid=3124596> | 
JBoss APAC <http://www.linkedin.com/groups?gid=4068303>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ovirt.org/pipermail/engine-devel/attachments/20130805/9b4b4191/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: redhat-logo.png
Type: image/png
Size: 4635 bytes
Desc: not available
URL: <http://lists.ovirt.org/pipermail/engine-devel/attachments/20130805/9b4b4191/attachment.png>