On 08/01/2020 10:49, Eirik Rye wrote:
[...]
In any case, the biggest issue is the one described in the original message in this thread, where logins are periodically failing for many for users:
2020-01-08T10:54:57.436400+01:00 imap dovecot: imap-login: Error: master(imap): net_connect_unix(imap) failed: Resource temporarily unavailable - http://wiki2.dovecot.org/SocketUnavailable 2020-01-08T10:54:57.437550+01:00 imap dovecot: imap-login: Internal login failure
At the same time:
~# ps aux | grep "dovecot/imap$" | wc -l
6637
~# doveadm process status | grep "^imap " | wc -l
6660
~# cat /proc/pidof dovecot/limits | grep "open files"
Max open files 32768 32768 files
~# doveconf -n
[...]
service imap-login {
client_limit = 2500
inet_listener imap {
port = 143
}
inet_listener imaps {
port = 993
ssl = yes
}
process_limit = 16
process_min_avail = 16
service_count = 0
vsz_limit = 512 M
}
service imap {
client_limit = 1
process_limit = 20000
}
-- Eirik