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  • keepalive安装和配置

    1、下载安装包并解压

     sudo wget http://www.keepalived.org/software/keepalived-1.2.13.tar.gz 

    tar zxvf keepalived-1.2.13.tar.gz 

    2、编译安装

    cd keepalived-1.2.13

    ./configure --prefix=/usr/local/keepalived

    [如果出现configure: error:

         !!! OpenSSL is not properly installed on your system. !!!

    则需要先安装openssl和openssl-devel, yum install openssl openssl-devel]

    make 

    sudo make install

    sudo cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

    sudo cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/

    sudo cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/

    mkdir /etc/keepalived

    cd /etc/keepalive

    sudo cp /usr/local/keepalived/etc/keepalived/keepalived.conf ./

    3、将keepalived添加到开机启动服务中,并进行测试

    chkconfig keepalived on

    chkconfig --list | grep keepalived

    sudo service keepalived restart

    修改keepalived.conf文件(smtp_server 改成localhost, router_id变成NodeMaster, virtual_ipaddress 改成你自己网段内且没有被使用的如10.1.xx.xx/24格式的.

    运行ip addr查看vip

    运行ping命令访问vip。

    4、在从服务器上进行步骤1-3

    注意:router_id变成NodeBackup,priority变成99, state变成BACKUP,主从服务器要在同一个网段内。

     5、加入脚本

    vrrp_script chk_mysql{

    script "/etc/keepalived/check_MYSQL.sh"

    interval 2

    weight 2

    }

    在virtual_ipaddress项前面加上下面段。

    track_script {

    chk_mysql

    }

    6、脚本内容

    #!/bin/bash

    A=`ps -C mysqld --no-header |wc -l`

    if [ $A -eq 0]

     then 

       /usr/share/mysql/mysql.server start

       sleep 1

       if [ `ps -C mysqld --no-header |wc -l` -eq 0]

          then

                 killall keepalived

            fi

    fi

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  • 原文地址:https://www.cnblogs.com/zxpo/p/3772949.html
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