[one-users] Load balancing in hybrid cloud

[Ruben S. Montero]

Hi,

Well, we are obtaining as much info as EC2 provides (e.g.
ec2-describe-instances). IMHO this is more a limitation  (challenge)
of the hybrid-cloud model, your load balancing techniques should be
robust enough to  deal with the limited information that the cloud
provider is going to publish, or even worst with difficult to predict
values (e.g. EC2 spot prices)

Regarding the "local" monitoring (e.g. Xen, Vmware, KVM) we obtain the
info from the hypervisors, there may be bugs (please let us know!) but
we think they are correctly monitored.

Cheers

Ruben

On Sat, Nov 27, 2010 at 12:13 PM, Tom Waterbley <t_waterbley at hotmail.com> wrote:
> Hi Ruben,
>
> Thanks for you answer.
> What you suggest is a nice solution but the problem with that in a hybrid
> cloud is that public (Amazon EC2) are currently not monitored by OpenNebula.
> I'm also not sure if other hypervisors like XEN or VMware are monitored
> correct.
>
> Cheers
>
> Tom
>
> --------------------------------------------------
> From: "Ruben S. Montero" <rubensm at dacya.ucm.es>
> Sent: Friday, November 26, 2010 5:52 PM
> To: <t_waterbley at hotmail.com>
> Subject: Re: [one-users] Load balancing in hybrid cloud
>
>> Hi Tom,
>>
>> OpenNebula's placement algorithm (match-making by default) only works
>> at allocation time. You can specify if a VM can be placed in a local
>> (private) or remote (public) cloud, you can even specify a rank to
>> different clouds or hosts [1], but OpenNebula does not balance the
>> VMs. A load balancer could be easily implemented with the OCA API, you
>> can check our JAVA[2] and Ruby[3] bindings...
>>
>> [1] http://www.opennebula.org/documentation:rel2.0:schg
>> [2] http://www.opennebula.org/documentation:rel2.0:java
>> [3] http://www.opennebula.org/documentation:rel2.0:ruby
>>
>> Cheers and good luck
>>
>> Ruben
>>
>> On Thu, Nov 25, 2010 at 5:37 PM, Waterbley Tom <Tom.Waterbley at howest.be>
>> wrote:
>>>
>>> Dear,
>>>
>>>
>>>
>>> I'm currently doing a master thesis with subject cloud computing. Now I
>>> have some questions about this cool subject.
>>>
>>> How is load balancing typically done in a hybrid cloud environment?
>>>
>>> The load balancer needs to know which VM's are up, and what's the load of
>>> every physical machine to add or drop VM's.
>>>
>>> How does OpenNebula this?
>>>
>>>
>>>
>>> Can somebody give me more information about load balancing in hybrid
>>> clouds?
>>>
>>>
>>>
>>> Thanks on advice!
>>>
>>>
>>>
>>> Tom
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.opennebula.org
>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>>
>>
>>
>>
>> --
>> Dr. Ruben Santiago Montero
>> Associate Professor (Profesor Titular), Complutense University of Madrid
>>
>> URL: http://dsa-research.org/doku.php?id=people:ruben
>> Weblog: http://blog.dsa-research.org/?author=7
>>
>



-- 
Dr. Ruben Santiago Montero
Associate Professor (Profesor Titular), Complutense University of Madrid

URL: http://dsa-research.org/doku.php?id=people:ruben
Weblog: http://blog.dsa-research.org/?author=7