[one-users] Load balancing in hybrid cloud

[Kristof Lange]

Hi Tom,

we are using an open source proxy server for this. There is only one 
reason to use a VPN connection I could imagine at this moment and thats 
the security aspect (just one attack point instead of n)  . I don' t 
know your use case, so you have to decide which method you'll prefer.  
Furthermore in my opinion its more elegant to watch the vms' load for a 
more flexible load balancing.  How to route the traffic depends on what 
public cloud provider you want to use. For e.g. Amazon there are 
ec2-api-tools which gives the opportunity to ask for all running 
instances (ec2-describe-instances). In the opennebula-api there should 
be something like that too.

Hope this will help

Regards
Kristof

On 27.11.2010 11:45, Waterbley Tom wrote:
>
> Hi Kristof,
>
> First I would like to thank you for you answer.
>
> The solution you suggest looks fine but isn't it better to watch to 
> the load of the physical machines instead of the VM's?
>
> We also don't exactly know how to route te traffic to the VM's which 
> are online to private and public cloud.
>
> I've been thinking about two solutions: a proxy server or a VPN 
> connection.
>
> With a proxy servers we divide traffic between private cloud and 
> public cloud. But VM's on the public cloud are connected direct to the 
> internet then.
>
> With the VPN connection instead we can bring the public cloud VM's 
> into the private network.
>
> What are the advantages and disadvantages of this two methods?
>
> -----Oorspronkelijk bericht-----
> Van: users-bounces at lists.opennebula.org 
> [mailto:users-bounces at lists.opennebula.org] Namens Kristof Lange
> Verzonden: vrijdag 26 november 2010 18:26
> Aan: users at lists.opennebula.org
> Onderwerp: Re: [one-users] Load balancing in hybrid cloud
>
> Hi Tom,
>
> or you can write an easy script, which provides the actual cpu load as 
> a webservice. Just install an cpu-tool (e.p. sysstat) on your image 
> and do requests to all of your instances.
>
> That's the way we handle loud balancing at that moment. But let me 
> know about your successes, when you choose the way Ruben described.
>
> Regards
>
> Kristof
>
> On 26.11.2010 17:51, Ruben S. Montero wrote:
>
> > 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 <mailto: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 <mailto: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
>
> > _______________________________________________
>
> > Users mailing list
>
> > Users at lists.opennebula.org <mailto:Users at lists.opennebula.org>
>
> > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>
> >
>
> >
>
> _______________________________________________
>
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>
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>
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