PHP-CGI Watcher, a little BASH script to kill PHP-CGI orphan processes draining server resources.

phpcgi-watcher.sh

#!/bin/bash
#
# @author Jose SAYAGO
# @uri    http://josesayago.com/blog/
#
# Process to monitor how many PHP-CGI processes are running, and kill them
# if they exceed the limit
#
# Set the maximum number of CGI Processes allowed
MAX_CGI=25;
# Date we will use in our logs
DATE=$(date);
# Count CGI Processes
COUNT_CGI=$(ps -ef --ppid=1 | grep /usr/bin/php-cgi | grep -v grep | wc -l); 
# Exceeded our limit?
if [[ $COUNT_CGI -gt $MAX_CGI ]] ; then 
  # Log this
  echo $DATE 'Killing PHP-CGI, ' $COUNT_CGI ' processes found. ' $MAX_CGI ' allowed.' >> /var/log/phpcgi-watcher.log ; 
  # Kill PHP-CGI
  pkill -KILL php-cgi ;
else 
  # Limit not reached
  echo $DATE 'System OK, there are currently ' $COUNT_CGI ' cgi processes running. ' $MAX_CGI ' allowed.' >> /var/log/phpcgi-watcher.log ; 
fi