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Date:      Thu, 28 Apr 2005 11:24:38 +0200
From:      Etienne Ledoux <etiennel@datapro.co.za>
To:        freebsd-isp@freebsd.org
Subject:   Re: load balancing - email server
Message-ID:  <200504281124.38084.etiennel@datapro.co.za>
In-Reply-To: <20050428080402.GP95908@e-Gitt.NET>
References:  <005201c54b92$0cf63e60$0701a8c0@CIRIUM> <200504280944.12838.etienne@unix.za.org> <20050428080402.GP95908@e-Gitt.NET>

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On Thursday 28 April 2005 10:04, Oliver Brandmueller wrote:
> Hi.
>
> On Thu, Apr 28, 2005 at 09:44:12AM +0200, Etienne Ledoux wrote:
> > I have a similar setup but I use ipf (ipnat round-robin) for my load
> > balancing, on a freebsd box infront of the machines. Works just as good.
>
> Never looked at it; is it able to do weighting and failover? How does it
> detect, if a service is down on one of the machines, so that you don't
> have every third connection failing?
>

Well I guess it's not that fancy. It's just plain vanilla round-robin load 
balancing. I use other tools to detect services that die, queues not clearing 
etc. I also use freevrrpd for failover. There use to be a project called 
lload. This apparently in conjunction with ipfw could do weighted load 
balancing but I can't seem to find that anymore. I guess it died. I'm sure 
there might be similar projects though.



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