自动监控apache服务状态并重启的shell脚本

目的：

1.监控apache服务器的状态

2.当发现apache down机就自动重启apache服务

3.重启apache不成功，发邮件给管理员警告apache down机

#!/bin/sh
PORT=`netstat -na|grep "LISTEN"|grep "80"|awk -F[:" "]+ '{print $4}'`
APACHEIP=`ifconfig eth0|awk '/inet/{print $2}'|cut -c 6-`
while [ `whoami` == "root" ]
do
   if [ "$PORT" == "80" ];then
     echo "Apache is running......"
   else
     echo "restart apache"
     /etc/init.d/httpd restart
     PORT=`netstat -na|grep "LISTEN"|grep "80"|awk -F[:" "]+ '{print $4}'`
        if [ "$PORT" == "80" ];then
          echo "apache restart successful......"
        else
          echo "apache restart failure......"
          echo "server: $APACHEIP apache is down,please try to restart apache!" > /var/log/apachemsg
          mail -s "warn!server: $APACHEIP  apache is down" [email protected] < /var/log/apachemsg

        fi
   fi
break
done 

赋予checkapache.sh可执行的权限

#chmod +x /usr/local/sbin/checkapache.sh

加入crontab，让系统五分钟检测一次apache状态

#crontab -l

*/5 * * * * /usr/local/sbin/checkapache.sh > /dev/null 2>&1

参考原文：http://blog.yahunet.com/?post=38