监控http进程所占内存过高重启httpd

#!/bin/sh
# crontab usage: */2 * * * * /home/http_restart.sh >> /backup/restart_apache.log

MIN_RAM=3200
FREE_RAM=`free -m| grep Mem|awk '{print $4}'`
echo $(date +"%y-%m-%d") `uptime`
if [ `echo "$FREE_RAM < $MIN_RAM"|bc` -eq 1 ]
then
echo "#0#" $(date +"%y-%m-%d %H:%M:%S") "pkill httpd" `ps -ef | grep httpd | wc -l`
/etc/init.d/httpd stop
sleep 5
pkill httpd
sleep 5
for i in 1 2 3
do
if [ `pgrep httpd | wc -l` -le 0 ]
then
/etc/init.d/httpd start
sleep 10
echo "#1#" $(date +"%y-%m-%d %H:%M:%S") "start httpd" `ps -ef | grep httpd | wc -l`
fi
done
fi