yum -y install kernel-devel openssl* popt popt-devel

2下载安装

wget http://www.keepalived.org/software/keepalived-1.2.9.tar.gz
tar -xf keepalived-1.2.9.tar.gz 
mkdir /usr/local/keepalived 
cd ~/ keepalived-1.2.9
./configure --prefix=/usr/local/keepalived/
make && make install
cp /usr/local/keepalived/sbin/keepalived /usr/sbin/ 
cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig
cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/
chmod +x /etc/init.d/keepalived
mkdir /etc/keepalived
cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived

3修改配置文件如下

[root@M128 ~]# vim /etc/keepalived/keepalived.conf
global_defs {
 notification_email {
 [email protected]
 }
 notification_email_from [email protected]
 smtp_server smtp.126.com # 邮件服务器地址 
 smtp_connect_timeout 30 # 连接超时时间 
 router_id LVS_Master
}
vrrp_script chk_http_port {
 script "/etc/keepalived/check_haproxy.sh" # haproxy运行检测脚本[haproxy宕掉重启haproxy服务] 
 interval 5 # 脚本执行间隔 
 weight -5 # 执行脚本后优先级变更：5表示优先级+5;-5则表示优先级-5
}
vrrp_instance VI_A {
 state MASTER # 主上此值为MASTER,从上为BACKUP 
 interface eth0
 virtual_router_id 50 # 此值主从必须一致
 priority 100
 advert_int 1
 authentication { # authentication两个参数值,主从也必须一致 
 auth_type PASS
 auth_pass yiban
 }
track_script {
 chk_http_port
 }
 virtual_ipaddress {
 192.168.78.220
 }
}

5启动keepalived

确保网络正常

service network restart (线上不要这么做)

/etc/init.d/keepalived start

查看结果

ip a