修改配置文件/etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {

      router_id Node_A （另一台Node_B）

}

#vrrp_script check_haproxy {

#    script "/etc/keepalived/check_haproxy.sh"  （如果启用脚本则打开注释）

#    interval

#    weight

#}

vrrp_instance VI_1 {

    state BACKUP

    interface eth0

    virtual_router_id

    priority  （另一台改为50）

    nopreempt

    advert_int

    authentication {

        auth_type PASS

        auth_pass 密码（自定义）

    }

#    track_script {

#        check_haproxy

#    }

    virtual_ipaddress {

        VIP/掩码 dev eth0 label eth0:

    }

}

#!/bin/bash

/etc/init.d/haproxy status &> /dev/null || /etc/init.d/haproxy restart &> /dev/null

if [ $? -ne  ]; then

  /etc/init.d/keepalived stop &> /dev/null

fi

listen server （自定义名称）

    bind *:PORT（端口）

    mode tcp

    timeout connect         30s

    timeout client          30s

    timeout server          180s

    timeout check           180s

    no option dontlog-normal

    balance leastconn

    option socket-stats

    option tcplog

    option tcp-check

    tcp-check connect

    server rs1（自定义名称） IP:PORT weight  check inter  rise  fall

    server rs2（自定义名称） IP:PORT weight  check inter  rise  fall 

listen server VIP:PORT

如果遇到本机没有VIP，不能启动haproxy

修改/etc/sysctl.conf文件

net.ipv4.ip_nonlocal_bind = 

sysctl -p

修改/etc/rsyslog.conf

打开下面两行的注释

$ModLoad imudp

$UDPServerRun 

添加

local2.*       /var/log/haproxy.log

重启/etc/init.d/rsyslog restart