Re: [cobalt-users] Raq4r farm on one IP ?

[Will DeHaan <null@xxxxxxx>]

Hisham Al Saad wrote:
> 
> Hi,
> 
> I'm new in the Cobalt appliances, we have just purchased and installed 2
> Raq4r . I am looking for an answer to this question, can we have a farm of
> Raq4r applicances listen to only one IP ?.I've seen this setup in some other
> vendors. I looked at the ManageRaQ but it only allows managing such farm.
> Thanks,
> Hisham

Sure, you'll need a front-end load balancer like an Alteon director. 
The cluster of RaQs should use private addresses, and the load balancer
will route from the one public IP address to the RaQs in configurable
patterns.

Many people don't realize that layer 4 load balancing switches and
simultaneously support multiple independent clusters, so there's no need
to buy one per cluster.  This connection model will scale enormously
with minimal effort.  

Note that you will need to ensure that the web site content is
propagated between each cluster node.  For many people that can be as
simple as a scheduled automatic FTP session, for others rsync or NFS may
be more appropriate.   Web log collection can be performed similarly, or
directly obtained from some load balancers.


	-- Will

-- 
Will DeHaan
Software Engineer              will.dehaan@xxxxxxx
Sun Cobalt Server Appliances.  Sun Microsystems, Inc.