dovecot - Jun 2022 - Occasional service disruptions

On 2022-06-06 11:38 a.m., Nikolaos Milas wrote:
> Jun 06 12:01:22 imap(user1)<29639><Vr0atcPg5M3BXBCl>: Warning:
Inotify
> instance limit for user 500 (UID vmail) exceeded, disabling. Increase 
> /proc/sys/fs/inotify/max_user_instances
> ...
> Jun 06 12:01:26 imap(user2)<29793><rZuSt8PgztoKyVSG>: Warning:
Inotify
> instance limit for user 500 (UID vmail) exceeded, disabling. Increase 
> /proc/sys/fs/inotify/max_user_instances
>
> Restarting Dovecot returns things back to normal.
This might help:
https://doc.dovecot.org/configuration_manual/os/

increasing inotify settings, as the error message suggests. E.g. in 
/etc/sysctl.conf

On 6/6/2022 7:09 ?.?., Oscar del Rio wrote:
> increasing inotify settings, as the error message suggests. E.g. in 
> /etc/sysctl.conf
Thanks Oscar,

I did that.

Any other suggestions regarding process_limit and service_count values?

Are there any rules of thumb for determining optimal values for these 
and/or other critical configuration parameters?

Cheers,
Nick