tar -xvf keepalived-1.1.20.tar.gz && cd keepalived-1.1.20 && ./configure --prefix=/usr/local/keepalived && make && make install && cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/ && cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/ &&  mkdir /etc/keepalived && cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/ &&  cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

! Configuration File for keepalivedglobal_defs {   notification_email {     acassen@firewall.loc     failover@firewall.loc     sysadmin@firewall.loc   }   notification_email_from Alexandre.Cassen@firewall.loc   smtp_server 192.168.200.1   smtp_connect_timeout 30   router_id MYSQLHA_DEVEL}vrrp_script check_mysqld {    script "/etc/keepalived/mysqlcheck/check_mysql.sh"  #检查MYSQL 复制状态脚本    interval 2    weight 2}vrrp_instance VI_1 {    state BACKUP  #这里主201和主202都写上BACKUP    interface eth0  #vip对外的网络接口    virtual_router_id 66 #标识号。。主主要统一起来    priority 100   #优先级。主202上改成90    advert_int 2#    nopreempt   #不抢占模式。在优先级高的那台设置此参数，一般在主上设置，主的优先级高    authentication {        auth_type PASS        auth_pass 1111    }      track_script {          check_mysqld  #调用MYSQL脚本的函数    }    virtual_ipaddress {        192.168.5.10/24    }}

#!/bin/bash#Totle:check_mysql#Description:Check mysql status#system:Use Linux#======================================#Set mysql host #每个机器改成自己的IP地址和远程授权的用户Host_S=192.168.1.5User_S=keepalivedPwss_S=keepalivedPort_S=3306#======================================#Function-->Check_mysql_IO#=====================================Check_mysql_IO(){Check_IO=`mysql -u$User_S -p$Pwss_S -h $Host_S -P $Port_S -e "show slave status\G" | grep "Runnin" | sed ‘s/ //g‘ | grep "IO" | awk -F: ‘{print $NF}‘ | grep "Yes" | wc -l`Check_SQL=`mysql -u$User_S -p$Pwss_S -h $Host_S -P $Port_S -e "show slave status\G" | grep "Runnin" | sed ‘s/ //g‘ | grep "SQL" | awk -F: ‘{print $NF}‘ | grep "Yes" | wc -l`if [ $Check_IO -ne 1 -o $Check_SQL -ne 1 ]then  /etc/init.d/keepalived stop  return 1else  Check_PID=`/etc/init.d/keepalived status | grep "pid" | wc -l`  if [ $Check_PID -eq 1 ]  then      echo "OK"      exit 0  else      /etc/init.d/keepalived start     if [ $? -eq 0 ]     then         echo "keepalived start ok" >/tmp/checkmysql.log         exit 0     else         echo "keepalived start fail..">/tmp/checkmysql.log         return 1     fi  fi fi}#======================================#Function-->Main#=====================================Main(){Check_mysql_IO    if [ $? -eq 1 ]    then        echo "Mysql $Host_S IO or SQL error" | mail -s "Mysql IO error" 50738846@qq.com        exit 1    fi}Main;