From owner-freebsd-cluster@FreeBSD.ORG  Tue May 31 13:10:21 2005
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Date: Tue, 31 May 2005 07:10:20 -0600
From: Brad Davis <so14k@so14k.com>
To: Sunil Sunder Raj <unixtools@hotmail.com>
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On Tue, May 31, 2005 at 11:14:26AM +0000, Sunil Sunder Raj wrote:
> Hi,
> I have 3 smtp servers 10.0.0.2, 10.0.0.3, 10.0.0.4 under a cluster with the 
> load balancing done by 10.0.0.1. The pf rule on 10.0.0.1 is
> 
> ext_if="fxp0"
> internal_smtp_servers="{ 10.0.0.2, 10.0.0.3, 10.0.0.4 }"
> rdr on $ext_if proto tcp from any to any port 25 -> $internal_smtp_servers 
> round-robin sticky-address
> 
> If 10.0.0.4 port 25 goes down, how do I force pf to remove 10.0.0.4 from 
> its table.

Hi,

I would use something line Nagios[1] or a perl script to do this. It is
not in PFs realm to handle this sort of thing.

[1]: http://www.nagios.org/
See the parts about Event handlers.


Regards,
Brad Davis