Date: Thu, 18 Mar 1999 18:46:32 -0800 From: Julian Elischer <julian@whistle.com> To: Christopher Sedore <cmsedore@maxwell.syr.edu> Cc: "'freebsd-net@freebsd.org'" <freebsd-net@FreeBSD.ORG> Subject: Re: clustering/load balancing Message-ID: <36F1BA88.2F1CF0FB@whistle.com> References: <262C3DA9BE0CD211971700A0C9B413A1CBD6@exchange.maxwell.syr.edu>
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Christopher Sedore wrote:
>
> OK, so I've worked some more on the IP clustering/load balancing stuff.
> I've hacked together a clustering daemon, and reworked the way that the
> kernel stuff is handled (it uses a flag and ipfw rules to do its thing).
>
rather cool but how about the following setup running with no mods
at all..
+-------[Machine B]
|
[internet]-----[ Machine A]-----+-------[Machine C]
|
+-------[Machine D]
Machine A's internet port is on ed0
firewall rules:
on Machine A:
ipfw add 100 fwd B tcp from 0.1.0.0:0.3.0.0 to A 80 in recv ed0
ipfw add 100 fwd C tcp from 0.2.0.0:0.3.0.0 to A 80 in recv ed0
ipfw add 100 fwd D tcp from 0.3.0.0:0.3.0.0 to A 80 in recv ed0
on machine B:
ipfw add 100 fwd localhost tcp from any to A 80 in recv ed0
on machine C:
ipfw add 100 fwd localhost tcp from any to A 80 in recv ed0
on machine D:
ipfw add 100 fwd localhost tcp from any to A 80 in recv ed0
This shared the load among all 4 machines A, B, C, and D
depending on the two bottom bits of the 2nd byte of the source address.
I haven't tried this but I think it SHOULD work..
(of course you could use a 5th machine as the load sharer)
what do you think?
julian
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