Cyrus IMAP and MySQL mailboxes (Building load-balancing cluster)

[Igor Zhbanov]

2006/11/27, Janne Peltonen <janne.peltonen at helsinki.fi>:
> On Sat, Nov 25, 2006 at 11:56:20PM +0300, Igor Zhbanov wrote:
> > So, what is the best way to build load-balancing Cyrus IMAP cluster?
> > Nginx, perdition, Cyrus IMAP Aggregator, Cyrus IMAP murder, Cyrus IMAP
> > replication?
>
> You forgot the simplest one: Cyrus IMAP on a cluster with no
> replication, no murder, no nothing, but on a (really working) clustered
> FS and no BDB. Oh yeah, you still have to have some way to make the
> system appear to be a single system to the users. I'm probably going to
> use just a simple round-robin DNS, but you could use an LVS frontend or
> something similar, if you want real load-balancing.
>
> It really all depends upon what you need. I prefer the aforementioned
> solution because I think it is very simple at the application level (if
> not the FS level).
I need to build mail system without using uncommon hardware such as
shared storage connected via SCSI or fiber channel. I need
"software-only" solution. Can you recommend me what kind of clustered
filesystem and/or network block devices to use? GFS, DRBD-0.8,
something else? What is better, reliable and more tested?