Linux下检测Apache进程数量并自动重启的脚本

在/etc/crontab里,定时执行检测脚本,检测系统的Apache,和Mysql进程是否超出标准,超标的话,自动重启,没有的话,记录进程数据.

Crontab的内容(每30分钟执行一次,并将结果记录在/var/log/chksys.log)

0,30 * * * * root /usr/local/chksys.sh >> /var/log/chksys.log

/usr/local/chksys.sh代码:

#!/bin/bash

#check apache,mysql thread and auto reboot system

#Powered by ipaddr(aspbiz)

#config

MaxApacheThread=300

MaxMysqlThread=250

NeedReboot=0

ApacheThread=`ps -A|grep http|wc -l`

MysqlThread=`ps -A|grep mysql|wc -l`

if [ $ApacheThread -gt $MaxApacheThread ]

then

NeedReboot=1

fi

if [ $MysqlThread -gt $MaxMysqlThread ]

then

NeedReboot=1

fi

if [ $NeedReboot -eq 1 ]

then

echo "-----------------------------"

echo $(date +"%y-%m-%d %H:%M:%S")

echo "-----------------------------"

echo "Apache:$ApacheThread;Mysql:$MysqlThread."

echo "System is busy,reboot"

reboot

else

echo "-----------------------------"

echo $(date +"%y-%m-%d %H:%M:%S")

echo "-----------------------------"

echo "Apache:$ApacheThread;Mysql:$MysqlThread."

echo "System is normal"

fi