On Mon, 9 Jan 2012, Francois Marier wrote:
Hi,
I must be missing something because I'm trying to have messages received
(via UDP) from 192.168.1.1:
1- go to a separate file, and
2- not show up in /var/log/syslog
by loosely following the instructions in the cookbook [1] and the config
file documentation [2]:
$ModLoad imudp
$UDPServerRun 514
if $fromhost-ip startswith '192.168.1.1' then -/var/log/gargoyle-router.log
& ~
Unfortunately, only #1 works. I've got the log entries from 192.168.1.1 both
in gargoyle-router.log and in /var/log/syslog just like when I use this
config.
unfortunantly, this config snippet is not sufficient for us to understand
what's happening because it doesn't show anything writing to
/var/log/syslog.
the output to /var/log/syslog would need to be after the discard step
(otherwise you are writing to /var/log/syslog before you even run the if
statement)
also note that doing a full "if then" is slower than doing the
property-based conditional
:fromhost-ip, startswith, "192.168.1.1" /var/log/gargoyle-router.log
and finally, this will match 192.168.1.100 as well as 192.168.1.1 so you
probably want equals instead of startswith.
David Lang
I've also tried to get #2 working by itself (not logging to the
gargoyle-router.log file and not logging in /var/log/syslog) using this
config:
$ModLoad imudp
$UDPServerRun 514
if $fromhost-ip startswith '192.168.1.1' then ~
but it also didn't work.
I suspect that there is something I don't understand about the discard
command because I can't figure out why it's not discarding the message. Any
ideas on how I should go about debugging this further?
(I'm running rsyslog 4.2.0-2ubuntu8.1 on Ubuntu Lucid and I have attached my
full concatenated rsyslog.conf to this email.)
Cheers,
Francois
[1] http://rsyslog.com/writing-specific-messages-to-a-file-and-discarding-them/
[2] http://rsyslog.com/doc/rsyslog_conf_actions.html
# /etc/rsyslog.conf Configuration file for rsyslog.
#
# For more information see
# /usr/share/doc/rsyslog-doc/html/rsyslog_conf.html
#
# Default logging rules can be found in /etc/rsyslog.d/50-default.conf
#################
#### MODULES ####
#################
$ModLoad imuxsock # provides support for local system logging
$ModLoad imklog # provides kernel logging support (previously done by rklogd)
#$ModLoad immark # provides --MARK-- message capability
$KLogPath /proc/kmsg
# provides UDP syslog reception
#$ModLoad imudp
#$UDPServerRun 514
$ModLoad imudp
$UDPServerRun 514
if $fromhost-ip startswith '192.168.1.1' then -/var/log/gargoyle-router.log
& ~
# provides TCP syslog reception
#$ModLoad imtcp
#$InputTCPServerRun 514
###########################
#### GLOBAL DIRECTIVES ####
###########################
#
# Use traditional timestamp format.
# To enable high precision timestamps, comment out the following line.
#
$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat
# Filter duplicated messages
$RepeatedMsgReduction on
#
# Set the default permissions for all log files.
#
$FileOwner syslog
$FileGroup adm
$FileCreateMode 0640
$DirCreateMode 0755
$Umask 0022
$PrivDropToUser syslog
$PrivDropToGroup syslog
# Default rules for rsyslog.
#
# For more information see rsyslog.conf(5) and
/etc/rsyslog.conf
#
# First some standard log files. Log by facility.
#
auth,authpriv.* /var/log/auth.log
*.*;auth,authpriv.none -/var/log/syslog
#cron.* /var/log/cron.log
daemon.* -/var/log/daemon.log
kern.* -/var/log/kern.log
lpr.* -/var/log/lpr.log
mail.* -/var/log/mail.log
user.* -/var/log/user.log
#
# Logging for the mail system. Split it up so that
# it is easy to write scripts to parse these files.
#
mail.info -/var/log/mail.info
mail.warn -/var/log/mail.warn
mail.err /var/log/mail.err
#
# Logging for INN news system.
#
news.crit /var/log/news/news.crit
news.err /var/log/news/news.err
news.notice -/var/log/news/news.notice
#
# Some "catch-all" log files.
#
*.=debug;\
auth,authpriv.none;\
news.none;mail.none -/var/log/debug
*.=info;*.=notice;*.=warn;\
auth,authpriv.none;\
cron,daemon.none;\
mail,news.none -/var/log/messages
#
# Emergencies are sent to everybody logged in.
#
*.emerg *
#
# I like to have messages displayed on the console, but only on a virtual
# console I usually leave idle.
#
#daemon,mail.*;\
# news.=crit;news.=err;news.=notice;\
# *.=debug;*.=info;\
# *.=notice;*.=warn /dev/tty8
# The named pipe /dev/xconsole is for the `xconsole' utility. To use it,
# you must invoke `xconsole' with the `-file' option:
#
# $ xconsole -file /dev/xconsole [...]
#
# NOTE: adjust the list below, or you'll go crazy if you have a reasonably
# busy site..
#
daemon.*;mail.*;\
news.err;\
*.=debug;*.=info;\
*.=notice;*.=warn |/dev/xconsole
# Create an additional socket in postfix's chroot in order not to break
# mail logging when rsyslog is restarted. If the directory is missing,
# rsyslog will silently skip creating the socket.
$AddUnixListenSocket /var/spool/postfix/dev/log
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