Monitor the number of file handles opened by the web-app and handle as needed

file_handles.sh

# run this script as a cron job or using watch
#
# e.g:
# Using 'watch' - to run the script every 5 mins
#   # watch -n 300 ./file_handles.sh
#
# Using a cron job to run every 5 mins. Run
#    # crontab –e
# then add the following line to the editor
#   '*/10 * * * * /home/hvkrishn/file_handles.sh'



pid=$(lsof -i:9420 -t)
echo "pid: " $pid

handles_count=$(lsof -p $pid | wc -l)
echo "File handles: " $handles_count

if [ "$handles_count" -gt 20000 ]
then
    echo "handles > 20K. Run: 'fuser -k -n tcp 9420' or 'kill -9 $pid'"
else
    echo "handles < 20K. We are all good"