Your message dated Wed, 14 Jan 2009 19:44:19 +0100
with message-id <[email protected]>
and subject line Re: Bug#511815: rsyslog: disk full when excessive repeated
messages
has caused the Debian Bug report #511815,
regarding rsyslog: disk full when excessive repeated messages
to be marked as done.
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511815: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511815
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--- Begin Message ---
Package: rsyslog
Version: 3.18.6-2
Severity: important
thanks for maintaining rsyslog!
i unfortunately noticed that rsyslog can fill up a disk when a process goes
haywire and sends many identical log messages over the course of a several
seconds.
sysklogd handles such situations by only logging identical lines once every so
often, and producing a count of how many times it is repeated:
Jan 14 06:26:24 FOOSERVER diskless114 ldm[20184]: sigwaitinfo returned an
error
Jan 14 06:26:29 FOOSERVER last message repeated 378 times
while that doesn't entirely solve the problem, it can make the difference
between a few GB vs. a few MB log files.
i debated setting this to serious, as it can result in data loss (missed logs)
or a DoS when this happens.
live well,
vagrant
-- System Information:
Debian Release: 5.0
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.26-1-xen-686 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL
set to en_US.utf8)
Shell: /bin/sh linked to /bin/bash
Versions of packages rsyslog depends on:
ii libc6 2.7-16 GNU C Library: Shared libraries
ii lsb-base 3.2-20 Linux Standard Base 3.2 init scrip
ii zlib1g 1:1.2.3.3.dfsg-12 compression library - runtime
Versions of packages rsyslog recommends:
ii logrotate 3.7.1-5 Log rotation utility
Versions of packages rsyslog suggests:
pn rsyslog-doc <none> (no description available)
pn rsyslog-mysql | rsyslog-pgsql <none> (no description available)
-- no debconf information
--- End Message ---
--- Begin Message ---
Vagrant Cascadian wrote:
> sysklogd handles such situations by only logging identical lines once every so
> often, and producing a count of how many times it is repeated:
..
> i debated setting this to serious, as it can result in data loss (missed logs)
> or a DoS when this happens.
See [1] or [2] on the background of this "feature" (and why it was disabled by
default).
You can switch it on though [3] (that's why I'm closing this bug), if you
consider this important.
Cheers,
Michael
[1] http://lists.adiscon.net/pipermail/rsyslog/2008-March/000603.html
[2] http://www.ossec.net/dcid/?p=119
[3] http://www.rsyslog.com/doc-rsconf1_repeatedmsgreduction.html
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