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Date: Wed, 30 Aug 2006 15:09:41 +0100
From: Vince <jhary@unsane.co.uk>
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To: Phil Regnauld <regnauld@catpipe.net>
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Cc: Baldur Gislason <baldur@foo.is>, freebsd-net@freebsd.org
Subject: Re: Load balancing for web servers
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Phil Regnauld wrote:
> Baldur Gislason (baldur) writes:
>> I'd like to set up a load balancing and resiliance system to
>> load balance between a bunch of web servers running Apache tomcat (slow java stuff).
>> Ideally I'd like each client IP to get mapped to a certain server and keep that
>> mapping throughout the entire session. I'd also like to have some means of detecting
>> a server that goes down and yank it from the load balancing pool. I do understand I
>> may have to write some code on that side.
> 
> 	pf and sticky rdr.
> 
> 	Use a shell script that pings the hosts on the backend, to insert/remove
> 	them from a persistent table.
> 

I'd probably go with that for a basic solutions myself, but also have a
look at the results of
cd /usr/ports && make search key="load balance"
haproxy looks promising for your requirements.


Vince

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