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Full Discussion: (/var/log/messages) issue
Top Forums UNIX for Dummies Questions & Answers (/var/log/messages) issue Post 302373507 by Azhrei on Friday 20th of November 2009 01:23:50 PM
Old 11-20-2009
Quote:
Originally Posted by mojoman
Yes it is alive and a few lines below I see:
[...]
I guess my question is why did it withdraw the IP and then suddenly rejoin?
The mDNS package (multicastDNS) thinks you're disconnecting from the network and reconnecting again. If the rest of the your network services disappear for a short time as well, then you may have an intermittent cable problem. Try swapping out the cable and see if the problem goes away.

If the rest of your network services stay up while mDNS goes down, then it's just that one service. All I can think of in that regard is some kind of autoconfiguration process that is running periodically and it causes mDNS to shutdown and then come back up. I don't know what type of service it may be that does that, though. You could try Google'ing it and see what you get. Another (rather "overkill" technique) would be to turn on system accounting and the next time you see those messages in your log file check the accounting data and determine what was running during that time period.

Yet another technique (just as much overkill as the previous) would be to run strace -f on the mDNS service (add the timestamp option to strace; probably -t or -T) and then you can see what's happening inside the application by comparing timestamps with the next occurrence that appears in the log.

Warning: the strace option will create a HUGE amount of data! Especially if it takes hours or days before the entry is repeated in the log file.
 

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LEARN ABOUT OPENSOLARIS

grablogs.conf

grablogs.conf(4)						   File Formats 						  grablogs.conf(4)

NAME

       grablogs.conf - grablogs configuration for libgrablogs.so of the plugins of
	gnome-system-log file

SYNOPSIS

       /usr/lib/gnome-system-log/plugins/grablogs.conf

DESCRIPTION

       The  libgrablogs.so  is	a plugin for gnome-system-log(1), it colloct the log files from the system as many as possible. grablogs.conf is a
       configuration file that contains a set of lines mixed with sh(1) syntax codes and individual
	log files. libgrablogs.so will read the file try to get a log files list for
	gnome-system-log(1). Users can copy the file into $HOME/.gnome2/gnome-system-log/plugins/`uname -p` to overwrite the system default one.

       The grablogs.conf file contains the following configuration categories:

	      [configs]
		     Each line under this category is interpreted as a config file of System. The plugin will open the config file and try to find
		     all system paths of the logs.

	      [commands]
		     Each line under this category is interpreted as a shell command and will be execute through a pipe. And each line of the out-
		     put of the command will be interpreted as a log path.

	      [logs] Each line under this category is interpreted as a log path.

FILES

       /usr/lib/gnome-system-log/plugins/grablogs.conf
	      The system default configuration file for the plugin libgrablogs.so

       $HOME/.gnome2/gnome-system-log/plugins/`uname -p`/grablogs.conf
	      The user specific configuration file for the plugin libgrablogs.so

EMAMPLE

       [configs]
       /etc/syslog.conf
       [commands]
       for i in `svcs -aH -o FMRI | grep -v lrc `; do svcprop -p restarter/logfile $i  2>/dev/null  ||	svcprop  -q  -p  restarter/alt_logfile	$i
       2>/dev/null ; done
       [logs]
       /var/log/messages
       /var/log/secure
       /var/log/maillog
       /var/log/cron
       /var/log/Xorg.0.log
       /var/log/XFree86.0.log
       /var/log/auth.log
       /var/log/cups/error_log

SEE ALSO

       gnome-system-log(1), pipelog.conf(1)

gnome-utils 2.16.0						    13 Oct 2006 						  grablogs.conf(4)
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