[Web-cyradm] Postfix, Cyrus IMAP - redundancy.

[Luc de Louw]

Eric Brunson wrote:
[..]
> 
> I do it with a combination of rsync, heartbeat and IP takeover.  It 
> leaves a window of opportunity for mail lossage, depending on the 
> frequency of rsync (I do it hourly), but I'm willing to live with that.  
> You could replace rsync with RedHat's GFS, but I've never messed with it.

I do such things with the help of DRBD. No single point of failure, data 
replication in real time and automated failover. I wrote a paper about 
such a solution. Basically it works with any application. The paper can 
be found here: 
http://www.bit-heads.ch/uploads/media/ha-infra_typo3-paper.pdf

rgds

Luc