Re: carp and dead daemon

[manu%netbsd.org@localhost (Emmanuel Dreyfus)]

matthew sporleder <msporleder%gmail.com@localhost> wrote:

> This is a common problem with load balancers and proxies (I've used
> many in front-of web apps where we had to insert custom X-Forward
> headers and other hacks -- I'm not sure if pen can do this), but I
> thought most spam filters used smtp headers?  I don't run any of my
> own email servers, though.

greylisting happens before you get the headers.
 
> I should also point out that you're really just trading one
> application for another since pen could fail and CARP wouldn't notice.

pen itself can be ballanced using carp. Their web site give example
using vrrp on Linux.

>  I would love to see port-level monitoring/kernel-module load
> balancing built into NetBSD.  :)

I wonder if kqueue is not already able to do give the information.

-- 
Emmanuel Dreyfus
http://hcpnet.free.fr/pubz
manu%netbsd.org@localhost