[Beowulf] Transparant clustering

[Serge Fonville]

Thank you for your answer.
I proably misunderstood the purpose of beowulf, thanks for clarifying
I will continue my search for a soution.

Thanks a lot all for the help
On Fri, Nov 14, 2008 at 11:34 PM, Lombard, David N <
dnlombar at ichips.intel.com> wrote:

> On Fri, Nov 14, 2008 at 01:41:16AM -0700, Serge Fonville wrote:
> > Thanks for the response (and for the questions :-))
> >
> > I'll try and elaborate a bit more.
> > I currently have two equal systems. (XEON 3220,8GB,80GB RAID1)
> > I want to run a couple of websites (using Tomcat) and two database
> servers (PostgreSQL and MySQL)
>
> That's a very different type of clustering.  This list, the Beowulf list,
> is about about clustering for HPC, to increase compute performance, usually
> for scientific and engineering calculations.  See below.
>
> > I have contintued reading a lot and I think I am starting to have a clear
> idea on what is possible
> > Basically I want it to appear as a single system to the outside world
> while in fact there are more (currently just two).
> > They should divide all usage of resources equally. If one goes down the
> other notices and takes over everything, if it comes up again they are
> synchronized (I am aware of the split brain issue) either server has four
> network interfaces and can also be connected through an RS-232 cable.
>
> There are hardware and software solutions to this problem.  At the
> conceptual
> level, you have a system--the load balancer--that routes incoming requests
> to
> one-of-N backing servers.  If any of the backing servers fails, it's simply
> ignored and future incoming requests are routed to the remaining server(s).
> As long as the remaining server(s) can handle the load, all is well and
> your
> service is provided.
>
> Here's LVS, a software solution: <http://www.linuxvirtualserver.org/>
> You may also want to consider Linux-HA to ensure your LVS server is robust:
> <http://www.linux-ha.org/>
>
> There are many other details to consider, but you'll learn of those as you
> research more appropriate solutions.
>
> HTH
> --
> David N. Lombard, Intel, Irvine, CA
> I do not speak for Intel Corporation; all comments are strictly my own.
>
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