[stunnel-users] messages in the stunnel

Jochen Bern Jochen.Bern at LINworks.de
Wed Jun 25 16:10:34 CEST 2014

On 25.06.2014 15:53, Paulraj Samikannu wrote:
> I see the following messages on the production  server, any special
> log setting requirement or is our stunnel  generating too many
> messages too fast?
> Jun 25 06:13:35 pprccmfaap001 rsyslogd-2177: imuxsock begins to drop
>     messages from pid 171059 due to rate-limiting
> Jun 25 06:15:34 pprccmfaap001 rsyslogd-2177: imuxsock lost 47
>     messages from pid 171059 due to rate-limiting

Can't comment on the specifics of stunnel, but rsyslogd brought rate
limiting on the UNIX socket by default into a world where maintainers of
daemons have never thought much about what *PID* may be attached to the
messages they send to the syslog.

dovecot (logging per-connection messages through the master process all
the time) and OpenVPN (dumping config, including the persisted
assignment of pool IPs to clients, into syslog at startup) are the most
affected software on my end, and yes, I happily raise the rate limit to
whatever the former needs.

> # grep -A 2 imuxsock /etc/rsyslog.conf
> $ModLoad imuxsock # provides support for local system logging (e.g. via logger command)
> $SystemLogRateLimitInterval 5   # Default: 5 (seconds)
> $SystemLogRateLimitBurst 1500   # Default: 200 (messages)

								J. Bern
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