Somewhat OT: Clustering and HA

[Alex Neuman]

On Feb 27, 2008, at 4:04 PM, Vlad Mazek wrote:

> Keep in mind that if you have more than 4 MX records in round robin  
> the lookup will only return four, throwing the load balancing a bit  
> out of skew.  Linux HA with lvs is dead easy to configure and can do  
> quite a bit with cheap hardware.

Can you please direct me to a good "howto" or "cookbook" on Linux HA?  
I've looked around and most are either too specific or outdated.