因squid对多核服务器支持不够理想，所以在每台freebsd服务器上（4核）开启了3个squid

 

 

平稳的运行了一段时间，有一天客服反映网页无法打开，然后就对每台squid服务器进行检查，发现有台服务器其中的一个squid进程死掉了，重新启动该squid，一切正常，为了及时发现squid进程故障并重启squid，特写了以下脚本

 

定时器，每过10分钟检查一次，无限循环

vi /root/restart_squid.sh

#!/bin/sh while true     do Squid1_IP=`awk '/ifconfig_lo0_alias0/{print $2}' /etc/rc.conf` Squid1Num=`netstat -an | grep -c $Squid1_IP`        if [ $Squid1Num -lt 10 ] ; then         /usr/local/etc/rc.d/squid1 start     /usr/local/etc/rc.d/squid1 restart     adddate=`date +%Y-%m-%d`" "`date +%H:%M:%S`         echo "$adddate squid_1 started" >> /var/restart_squid.log     fi Squid2_IP=`awk '/ifconfig_lo0_alias1/{print $2}' /etc/rc.conf` Squid2Num=`netstat -an | grep -c $Squid2_IP`        if [ $Squid2Num -lt 10 ] ; then         /usr/local/etc/rc.d/squid2 start     /usr/local/etc/rc.d/squid2 restart     adddate=`date +%Y-%m-%d`" "`date +%H:%M:%S`         echo "$adddate squid_2 started" >> /var/restart_squid.log     fi Squid3_IP=`awk '/ifconfig_lo0_alias2/{print $2}' /etc/rc.conf` Squid3Num=`netstat -an | grep -c $Squid3_IP`        if [ $Squid3Num -lt 10 ] ; then         /usr/local/etc/rc.d/squid3 start     /usr/local/etc/rc.d/squid3 restart     adddate=`date +%Y-%m-%d`" "`date +%H:%M:%S`         echo "$adddate squid_3 started" >> /var/restart_squid.log     fi sleep 10m done

 

chmod +x /root/restart_squid.sh

/root/restart_squid.sh

 

也可以用计划任务来实现

vi /root/restart_squid.sh

#!/bin/sh

Squid1_IP=`awk '/ifconfig_lo0_alias0/{print $2}' /etc/rc.conf` Squid1Num=`netstat -an | grep -c $Squid1_IP`        if [ $Squid1Num -lt 10 ] ; then         /usr/local/etc/rc.d/squid1 start     /usr/local/etc/rc.d/squid1 restart     adddate=`date +%Y-%m-%d`" "`date +%H:%M:%S`         echo "$adddate squid_1 started" >> /var/restart_squid.log     fi Squid2_IP=`awk '/ifconfig_lo0_alias1/{print $2}' /etc/rc.conf` Squid2Num=`netstat -an | grep -c $Squid2_IP`        if [ $Squid2Num -lt 10 ] ; then         /usr/local/etc/rc.d/squid2 start     /usr/local/etc/rc.d/squid2 restart     adddate=`date +%Y-%m-%d`" "`date +%H:%M:%S`         echo "$adddate squid_2 started" >> /var/restart_squid.log     fi Squid3_IP=`awk '/ifconfig_lo0_alias2/{print $2}' /etc/rc.conf` Squid3Num=`netstat -an | grep -c $Squid3_IP`        if [ $Squid3Num -lt 10 ] ; then         /usr/local/etc/rc.d/squid3 start     /usr/local/etc/rc.d/squid3 restart     adddate=`date +%Y-%m-%d`" "`date +%H:%M:%S`         echo "$adddate squid_3 started" >> /var/restart_squid.log     fi

chmod +x /root/restart_squid.sh

crontab -e

*/10 * * * * root /root/restart_squid.sh

本文转自king_819 51CTO博客，原文链接：http://blog.51cto.com/kerry/291714，如需转载请自行联系原作者