Re: MTA (SMTP/POP) + LVS

[Mike McLean <mikem@xxxxxxxxxx>]

François Chenais wrote:
> > The simplest solution (although a bit of a hack) is to have the same mail
> > spool directory exported to all realservers. 
>
> Yes but it's not safe if the disk (or the server hosting the disk)
> brakes. 
Yes.  And the fallout is that generally this sort of RW activity does 
not work well with LVS.
When such things are required, one reasonable solution is to have a 
three tier setup where the lvs director load balances across multiple 
servers (in your case pop/imap), which access their data via a highly 
available shared filesystem/database.  Of course this requires more 
machines and more hardware.