send email when exceptions occur in catalina.out

Question

i am working on this. monitor tomcat log file called "Catalina.out" for "Exception" error. The script should send us the E-mail as soon as it finds the string "Exception" in the file. Any thoughts?

Can this be done via tomcat/log4j?

Answer 1

Try this one:

#!/bin/bash
while [ 1 = 1 ]
do
    rcode="`tail -n 1000 catalina.out 2>&1 | grep -o Exception`"
    if [ "$rcode" = "Exception" ]
    then
            echo "Something went wrong." \
            | mail -s "your subject" mail@mailaddress.com
    fi
    sleep 180
done

There are certainly some improvements to be done. E.g. the "-n 1000" or sleeping for 180 seconds. But it should do for a start.