Cyrus HA Scalable Solution? Rsync

[Jason Munro]

On 4:39:45 pm 05/25/04 "Kevin Baker" <kbaker at missionvi.com> wrote:
> We are testing a number of email configurations for a
> 10,000+ user-base. Was hoping to get some thoughts on
> below:
>
> - Postfix
> - Cyrus-SASL
> - Mysql Auth
>
> We will likely start with 3 frontend servers and 3 backend
> servers. Replicate MySQL across all servers auth, maildrop
> routing.
>
> We were thinking of doing some sort of rysync of the imap
> mailstore across the backend servers. Then Heartbeat on
> the backend servers with IP takeover to handle failover.
>
> The hope is that if a server goes down the mailstore will
> be sync'ed up on the server that takes over.
>
> Thought? This is obviously just a sketch... but I haven't
> seen a this done before as far as the failover solution
> with rsync and thought it might work pretty well.

I have been doing this with an 18 gig mailstore that uses maildirs. After
the first sync I can run rsync every 5 minutes and it only takes 35-40
seconds to complete, even if I move/delete a few thousand messages at a
time.

\__ Jason Munro
 \__ jason at stdbev.com
  \__ http://hastymail.sourceforge.net/


---
Cyrus Home Page: http://asg.web.cmu.edu/cyrus
Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu
List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html