MUPDATE master server

[marc.bigler at day.com]

Thanks for the answer.  I was reading the IMAP Aggregoatr: A Murder of IMAP
Servers (ag.html) that's why I didn't find my answer in that document.

So if I can only have one single MUPDATE master server the others would be
slaves right ?

What would then happen to mails when the MUPDATE master server goes down ?
Will mail be undelivered and be bounced back ? I would like to avoid the
MUPDATE master server to become the single point of failure.

Regards
Marc




                                                                                                                                    
                                                                                                                                    
                    Rob Siemborski       To:     marc.bigler at day.com                                                                
                    <rjs3 at andrew.c       cc:     info-cyrus at lists.andrew.cmu.edu                                                    
                    mu.edu>              Subject:     Re: MUPDATE master server                                                     
                                                                                                                                    
                    03/07/03 05:04                                                                                                  
                    PM                                                                                                              
                                                                                                                                    
                                                                                                                                    




On Fri, 7 Mar 2003 marc.bigler at day.com wrote:

> I am a bit confused on where should be ran the MUPDATE master server,
> should it be running on a Front End server, Back End Server or maybe a
> seperate server ? The documentation is not very explicit about this I
> think.

>From the documentation (install-murder.html):

     * One machine to become the MUPDATE master server. This can be the
       same as one of your frontend servers.

Presumably you could also run it on a backend with a separate imapd.conf
file.

> Also is it possible to have two MUPDATE master servers for
> redundancy ?

No.

> I am looking to the best way to get a maximum of redundancy and high
> availabilty between two different geographical sites where we would be
> running Cyrus v2.2. Are there maybe any examples around ?

The murder won't increase your redundancy.  It will only reduce the impact
of a failure.

-Rob

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Rob Siemborski * Andrew Systems Group * Cyert Hall 207 * 412-268-7456
Research Systems Programmer * /usr/contributed Gatekeeper