Migrating, syncing, maybe load-balancing/failover two dovecot servers?

[Paul Kudla]

maybe look a replicator / replication

its designed to do exactly that




Happy Wednesday !!!
Thanks - paul

Paul Kudla


Scom.ca Internet Services <http://www.scom.ca>
004-1009 Byron Street South
Whitby, Ontario - Canada
L1N 4S3

Toronto 416.642.7266
Main 1.866.411.7266
Fax 1.888.892.7266
Email paul at scom.ca

On 1/4/2023 7:46 AM, Gerben Wierda wrote:
> I am in the process of migrating from dovecot on one OS (macOS/darwin) 
> to a new server running dovecot with another OS (Ubuntu Linux 22.4).
> 
> I have mostly copied/adapted the setup of the old server to the new. I 
> am in the process of finishing that and adding some stuff that still 
> needs to be added/migrated, like rspamd. And the data of course before 
> the new one takes over from the old.
> 
> I have done a migration before (MacOS X Server dovecot to MacPorts 
> dovecot on macOS), many years ago, I recall that I used dovecot syncing 
> but also rsync and I don't really recall (and anyway, the software has 
> changed since)
> 
> I have been thinking about keeping them both alive, with one as a 
> failover for the other. They will not share their storage (e.g. NFS), 
> So, I was wondering if I can do something with syncing between instances 
> and dovecot director. I have been looking at the documentation, but a 
> quick scan reveals I cannot locate some sort of tutorial and I am 
> uncertain what will work and what not.
> 
> If keeping both alive in parallel is too problematic, it is OK to have 
> regular syncing in one direction (old to new) at first and then switch 
> over and have syncing in the other direction (new to old)
> 
> Can someone enlighten me?
> 
> Gerben Wierda (LinkedIn <https://www.linkedin.com/in/gerbenwierda>)
> R&A IT Strategy <https://ea.rna.nl/> (main site)
> Book: Chess and the Art of Enterprise Architecture 
> <https://ea.rna.nl/the-book/>
> Book: Mastering ArchiMate <https://ea.rna.nl/the-book-edition-iii/>
> 
> 
> -- 
> This message has been scanned for viruses and
> dangerous content by *MailScanner* <http://www.mailscanner.info/>, and is
> believed to be clean.