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Full Discussion: Blocked while Redirecting the syslog messages to a pipe in the rc script file
Top Forums Shell Programming and Scripting Blocked while Redirecting the syslog messages to a pipe in the rc script file Post 302502504 by anilmurala on Tuesday 8th of March 2011 06:08:13 AM
Old 03-08-2011
Blocked while Redirecting the syslog messages to a pipe in the rc script file
Hi All,
I am newbie to linux and i am trying to re-direct the syslog messages to a pipe.
I have modified the syslog.conf file accordingly and have written an rc script to read from the pipe and put them to a file.

I was able to get the log messages to the file but my system is getting blocked in the rc script due to the "read" and i was not asked for the username and password for login.

This is my rc script is as follows

#!/bin/bash
cat /var/diagpipe | while read LINE
do
echo $LINE >> /var/Diag.log
done

syslog.conf

*.info |/var/diagpipe

My rc script is getting excecuted after the rc script for syslod is executed.

can someone please help me, so that with my rc script i will be reading the data from the pipe continuously and i should not block.

Don't know if stty solves my problem.

Thanks in Advance

Anil.
 

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LEARN ABOUT CENTOS

pmdarsyslog

PMDARSYSLOG(1)						       Performance Co-Pilot						    PMDARSYSLOG(1)

NAME

       pmdarsyslog - rsyslog (reliable and extended syslog) PMDA

DESCRIPTION

       pmdarsyslog is a Performance Metrics Domain Agent (PMDA) which exports metric values from the rsyslogd(8) server.  Further details about
       rsyslog can be found at http://www.rsyslog.com/.

INSTALLATION

       If you want access to the names and values for the rsyslog performance metrics, do the following as root:

	       # cd $PCP_PMDAS_DIR/rsyslog
	       # ./Install

       If you want to undo the installation, do the following as root:

	       # cd $PCP_PMDAS_DIR/rsyslog
	       # ./Remove

       pmdarsyslog is launched by pmcd(1) and should never be executed directly.  The Install and Remove scripts notify pmcd(1) when the agent is
       installed or removed.

       In order to use this agent, rsyslog stats gathering must be enabled.  This is done by adding the lines:

	       $ModLoad impstats
	       $PStatsInterval 5       # log every 5 seconds
	       syslog.info	       |/var/log/pcp/rsyslog/stats

       to your rsyslog.conf(5) configuration file after installing the PMDA.  Take care to ensure the syslog.info messages do not get logged in
       any other file, as this could unexpectedly fill your filesystem.  Syntax useful for this is syslog.!=info for explicitly excluding these.

FILES

       /var/log/pcp/rsyslog/stats
	   named pipe containing statistics exported from rsyslog, usually created by the PMDA Install script.

       $PCP_PMDAS_DIR/rsyslog/Install
	   installation script for the pmdarsyslog agent

       $PCP_PMDAS_DIR/rsyslog/Remove
	   undo installation script for the pmdarsyslog agent

       $PCP_LOG_DIR/pmcd/rsyslog.log
	   default log file for error messages from pmdarsyslog

SEE ALSO

       pmcd(1), rsyslog.conf(5), rsyslogd(8).

3.8.10							       Performance Co-Pilot						    PMDARSYSLOG(1)
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