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Script to search log file for last 15 mins data

 
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Old 10-03-2015
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I strongly suggest that instead of trying to match based on timestamps you instead keep track of the line number of the last line processed in the previous run and on the next run just start processing with the next line in that log file. Doing it this way will keep you from missing events and keep you from processing some events twice.
Furthur to Don_Cragun, and if I have understood the task correctly.

You need a script running under cron every 15 minutes which copies the current logfile and compares the line count with the previous version of the logfile. The script then processes the "tail -#" number of lines difference.

This is a basic technique to avoid "tail -f" on logfiles which will get deleted by log rotation scripts. It also avoids reading the logfile and processing all the timestamps in the logfile.

Don't forget the "first time" condition when the T-15 minutes copy does not exist. Your first run of the cron will just prepare the files.
 
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LEARN ABOUT OPENSOLARIS

cl_eventd

cl_eventd(1M)						   System Administrator Commands					     cl_eventd(1M)

NAME

       cl_eventd - Cluster event daemon

SYNOPSIS

       /usr/cluster/lib/sc/cl_eventd [-v]

DESCRIPTION

       The cl_eventd daemon is started at boot time to monitor system events that are generated by other cluster components. This daemon also for-
       wards these events to other cluster nodes. Only the events of class EC_Cluster are forwarded to other cluster nodes.

OPTIONS

       The following option is supported:

       -v	    Send additional troubleshooting and debugging information to syslogd(1M).

FILES

       /usr/cluster/lib/sc/cl_eventd	   Cluster event daemon

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       syseventd(1M), syslog(3C)

NOTES

       The cl_eventd daemon does not provide a publicly accessible interface.

Sun Cluster 3.2 						    5 May 2006							     cl_eventd(1M)