I have two postfix/(replicating)dovecot/rspamd/etc servers, 6-8 human users, on
a total of 15-20 devices (iOS and macOS)
Yours,
Gerben Wierda (LinkedIn, Mastodon)
R&A_IT_Strategy (main site)
Book: Chess_and_the_Art_of_Enterprise Architecture
Book: Mastering_ArchiMate
YouTube_Channel
On 25 Jan 2024, at 10:17, Marc <m...@f1-outsourcing.eu> wrote:
How many servers do you have? How many active clients do you have?
Respectfully, I would like to ask: please do not remove
replication, please
rethink this.
Currently, replication is my life saver. I run two postfix/
dovecot combos
(on different operating systems), with dovecot
synchronising via
replication. Both are behind a HAProxy running on the
router (OPNsense), one
as active, one as backup.
If one of the two fails, the other takes over, and when it
comes up again
everything works fine and is up to date. I have had these
kinds of system
failures (very hard to find and turned to be hardware
related) and it was
the replication that made me survive the issues (even when
I was far away
from my systems). Mail for my small group of users (about
8) never went
down, no mail message was ever lost, no manual
interventions to sync were
ever needed.
If I want to create the same level of availability without
replication, I
need those two dovecots to use shared (NFS cluster)
storage. But then, I
have another single point of failure (NFS storage) again.
So, I need two
separate NFS machines that synchronise, Apart from the
nightmare of making
NFS secure, it means that I need to double my hardware
(from two systems to
four) to be protected against hardware failure (which is my
goal).
The replication service is the perfect small scale
solution. Together with
HAProxy, it enables HA in the most simple and effective
way. Going the 'NFS
cluster' route is not feasible for me, so if replication is
removed and I am
forced to upgrade, I will lose HA.
So please, take small scale users like me into account.
Gerben Wierda (LinkedIn <https://www.linkedin.com/in/
gerbenwierda>, Mastodon
<https://newsie.social/@gctwnl>)
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/>
YouTube Channel <http://www.youtube.com/@GerbenWierda>
On 16 Jul 2023, at 18:54, Aki Tuomi via dovecot
<dovecot@dovecot.org>
wrote:
Hi!
Yes, director and replicator are removed, and
won't be available for pro
users either.
For NFS setups (or similar shared setups), we
have documented a way to use
Lua to run a director-like setup, see
https://doc.dovecot.org/3.0/configuration_manual/
howto/director_with_lua/
Regards to replication, doveadm sync is not being
removed. So you can
still run doveadm sync on your system to have a primary /
backup setup.
Aki
On 16/07/2023 18:34 EEST William
Edwards via dovecot
<dovecot@dovecot.org> wrote:
Top posting because nothing specific to
reply to, sorry. Not exactly
sure, but there’s another thread about the removal of
Director in favour of
Dovecot Pro on 3.x. Perhaps this change is related.
William Edwards
Op 16 jul. 2023 om 16:33
heeft Daniele <danix@kernel-
panic.it> het
volgende geschreven:
Hello,
Just like Vladimir, I'm a bit
concerned about this change,
and I'd
really appreciate if someone could let us know if the
replication feature
(that works so well!) will be replaced or removed; and, in
case of removal,
what would be recommended replacement?
Thanks in advance and best
regards,
Daniele
On 09-Jul-23 9:36
PM, Vladimir
Mishonov via
dovecot wrote:
Hello everyone.
Just saw this
commit in the
official Github
repo:
https://github.com/dovecot/core/commit/
4c04e4c30fd4817a8b0e11d04d9681173f696
f41#diff-
5f643d8b0d1eea65d0f3c749d14d42b25a9d60f0f149bface862f5ff348412c8
Looking at the
commit details, it
appears that it
completely removes
the replication feature. I'm a bit perplexed by this change
and am not sure
what might be the justification for it. Personally, I find
replication to be
very useful, as it allows me to maintain a synchronized
mirror of all of my
mailboxes on my home server, for use as backup in case the
primary server
goes down for some reason.
Perhaps there's
some sort of
replacement being
planned for this
feature? Or maybe the relevant code is simply going to be
refactored to a
plugin or external program, and there's nothing to worry
about at all?
In any case, I'd
greatly appreciate
if one of the
developers could
comment on this change.
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