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-   -   Creating filters in rsyslog (http://www.linuxquestions.org/questions/showthread.php?t=4175446295)

ahmedfai 01-19-2013 03:41 AM

Creating filters in rsyslog
 
Hi All,

I am new to this Forum as well as to Linux. I have very limited knowledge on Linux and I am planning to learn more.
I have a requirement to set up a central logging server with Linux and that is why I am here.

I have installed rsyslog (removed syslogd obviously) and it is now logging all the messages in to /var/log/messages. But I want to create filters. For example I have a lot of network devices like switches and routers and want to create filters based on the host names of these devices.

I did refer this: http://blog.migrationking.com/2011/0...e-linux-6.html

Below is my rsyslog.conf

# rsyslog v5 configuration file

# For more information see /usr/share/doc/rsyslog-*/rsyslog_conf.html
# If you experience problems, see http://www.rsyslog.com/doc/troubleshoot.html

#### MODULES ####

$ModLoad imuxsock # provides support for local system logging (e.g. via logger command)
$ModLoad imklog # provides kernel logging support (previously done by rklogd)
#$ModLoad immark # provides --MARK-- message capability

# Provides UDP syslog reception
$ModLoad imudp
$UDPServerRun 514

# Provides TCP syslog reception
$ModLoad imtcp
$InputTCPServerRun 514


#### GLOBAL DIRECTIVES ####

# Use default timestamp format
$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat

# File syncing capability is disabled by default. This feature is usually not required,
# not useful and an extreme performance hit
#$ActionFileEnableSync on

# Include all config files in /etc/rsyslog.d/
$IncludeConfig /etc/rsyslog.d/*.conf

#### RULES ####

# Log all kernel messages to the console.
# Logging much else clutters up the screen.
#kern.* /dev/console

# Log anything (except mail) of level info or higher.
# Don't log private authentication messages!
*.info;mail.none;authpriv.none;cron.none /var/log/messages

# The authpriv file has restricted access.
authpriv.* /var/log/secure

# Log all the mail messages in one place.
mail.* -/var/log/maillog

# Log cron stuff
cron.* /var/log/cron

# Everybody gets emergency messages
*.emerg :omusrmsg:*

# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler

# Save boot messages also to boot.log
local7.* /var/log/boot.log

# OOB ASA Logging
:fromhost-ip, isequal, "xx.xx.xx.xx" /var/log/Switch1
& ~

# ### begin forwarding rule ###
# The statement between the begin ... end define a SINGLE forwarding
# rule. They belong together, do NOT split them. If you create multiple
# forwarding rules, duplicate the whole block!
# Remote Logging (we use TCP for reliable delivery)
#
# An on-disk queue is created for this action. If the remote host is
# down, messages are spooled to disk and sent when it is up again.
#$WorkDirectory /var/lib/rsyslog # where to place spool files
#$ActionQueueFileName fwdRule1 # unique name prefix for spool files
#$ActionQueueMaxDiskSpace 1g # 1gb space limit (use as much as possible)
#$ActionQueueSaveOnShutdown on # save messages to disk on shutdown
#$ActionQueueType LinkedList # run asynchronously
#$ActionResumeRetryCount -1 # infinite retries if host is down
# remote host is: name/ip:port, e.g. 192.168.0.1:514, port optional
#*.* @@remote-host:514
# ### end of the forwarding rule ###


I tried multiple combinations like

:msg,contains, "<Hostname>" /var/log/Switch1
& ~

if $msg contains '<Hostname>' then /var/log/Switch1
& ~

But it is not working for me at the moment.

I am using the following:
Red Hat Enterprise Linux Server release 5.5
rsyslog-5.10.0-2.el5.centos

I would really appreaciate if some one could assist me with this.

Thanks in advance
Ahmed

unSpawn 01-19-2013 01:48 PM

Please post your thread once and in only one forum. Posting a single thread in the most relevant forum will make it easier for members to help you and will keep the discussion in one place. Creating duplicate threads is unnecessary and only serves to convey impatience or a lack of familiarity with the LQ Rules. This thread is being closed because it is a duplicate of http://www.linuxquestions.org/questi...-a-4175446296/.


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