nixCraft

Hello Friends,

I need a help in writing the script to monitor one of the log file and send out an e-mail when it finds particular value goes above some threshold.

Example:

sample log entry :

2008.04.29 15:07:45:683 Env/Ajp13Processor[8109][5]:INFO:CORE BEGIN Session=242A84B37BAD5E5FC92D5883DC540AE2.abcxyz6 Active Sessions: 180

In above sample entry if Active Sessions: goes above 250 it should send out an e-mail.

This will be very helpful in my project. Can some expert give hint on this.

Thanks

check this commands


$ tail -f <logfile> #this will show on your term real time updates of the end of the file


$ grep
$ mail

may be you can launch a command with pipes with this commands and a & at the end to go in backgound


tail -f <logfile> | grep -e "Session" | mail -s "subject" mail@example.com


will be nice if you post your final script here for further reading.

Thanks for the hint but it didn't serve my requirement. grepping the session and sending mail is not my requirement. It as to send mail only if value exceeds some threshold say for example 250. Sessions =<value> .

Please suggest what changes I have to do for this.

Assuming the above log entry is a single line and session number is the last field,
something like this should work