[Dovecot] auth server refusing connections intermittently
Running Dovecot 1.0-rc27 on Solaris 10..
We have been noticing intermittent messages of this sort and wondered if this indicates whether we need to add more dovecot-auth worker processes:
Mar 28 03:15:41 myhost dovecot: pop3-login: Can't connect to auth server at default: Connection refused Mar 28 08:10:20 myhost dovecot: imap-login: Can't connect to auth server at default: Connection refused Mar 28 09:08:13 myhost dovecot: imap-login: Can't connect to auth server at default: Connection refused Mar 28 10:23:38 myhost dovecot: imap-login: Can't connect to auth server at default: Connection refused Mar 28 10:35:37 myhost dovecot: imap-login: Can't connect to auth server at default: Connection refused Mar 28 10:50:59 myhost dovecot: imap-login: Can't connect to auth server at default: Connection refused Mar 28 12:00:44 myhost dovecot: pop3-login: Can't connect to auth server at default: Connection refused Mar 28 12:07:31 myhost dovecot: imap-login: Can't connect to auth server at default: Connection refused Mar 28 14:44:57 myhost dovecot: imap-login: Can't connect to auth server at default: Connection refused
However, this system has over 7,000 users and 1,500 simultaneous IMAP and POP3 connections, and we only see one dovecot-auth process running. By contrast, another server has over 11,000 users and 3,000 simultaneous IMAP and POP3 connections (but is currently running rc24), and we only have seen 3 of the above error messages there -- and there is only one dovecot-auth process there as well. Does this sound right?
Also, how many times are these connections retried (and at what sleep interval, if any) before it gives up?
--
Steven F. Siirila Office: Lind Hall, Room 130B Internet Services E-mail: sfs@umn.edu Office of Information Technology Voice: (612) 626-0244 University of Minnesota Fax: (612) 626-7593
On 28.3.2007, at 22.58, Steven F Siirila wrote:
Running Dovecot 1.0-rc27 on Solaris 10..
We have been noticing intermittent messages of this sort and
wondered if this indicates whether we need to add more dovecot-auth worker
processes:Mar 28 03:15:41 myhost dovecot: pop3-login: Can't connect to auth
server at default: Connection refused
This change should help with these (rc28):
2007-03-16 15:23 Timo Sirainen tss@iki.fi
* src/: auth/auth-worker-server.c,
lib-auth/auth-server-connection.c: If net_connect_unix() fails,
assume also that ECONNREFUSED may be a temporary failure. It can
happen if we exceeded the listener's backlog.Auth worker processes anyway don't matter here, the connections are
accpted by the master dovecot-auth process. You could increase them
from count setting inside auth block, but I'm not sure if that could
cause other problems.
participants (2)
-
Steven F Siirila
-
Timo Sirainen