keepalived双机热备

在80.105做主服务器：
systemctl stop firewalld
setenforce 0

yum install keepalived -y //keepalived软件安装
vi /etc/keepalived/keepalived.conf //进入keepalived服务主配置文件
删除所有内容，添加以下内容：
主负载均衡服务器配置
! Configuration File for keepalived

global_defs { //全局配置
router_id lb01 //调度器的名称
}

vrrp_instance VI_1 { //定义实例
state MASTER //状态参数
interface ens32 //虚拟IP地址放置的网卡位置
virtual_router_id 51 //集群id
priority 150 //优先级
advert_int 1 //主备通讯时间间隔
authentication { //认证设置
auth_type PASS //密码认证
auth_pass 1111
}
virtual_ipaddress { //虚拟IP地址
192.168.80.188
}
}

systemctl start keepalived //启动keepalived

systemctl status keepalived //查看keepalived状态

ip addr show ens32 //查看ens32网卡ip地址

cat /var/log/messages //查看日志

在80.104做备服务器

systemctl stop firewalld
setenforce 0

yum install keepalived -y //keepalived软件安装
vi /etc/keepalived/keepalived.conf //进入keepalived服务主配置文件
删除所有内容，添加以下内容：
备负载均衡服务器配置
! Configuration File for keepalived

global_defs { //全局配置
router_id lb02 //调度器的名称
}

vrrp_instance VI_1 { //定义实例
state BACKUP //状态参数
interface ens32 //虚拟IP地址放置的网卡位置
virtual_router_id 51 //集群id
priority 100 //优先级
advert_int 1 //主备通讯时间间隔
authentication { //认证设置
auth_type PASS //密码认证
auth_pass 1111
}
virtual_ipaddress { //虚拟IP地址
192.168.80.188
}
}

systemctl start keepalived //启动keepalived

ip addr show ens32 //查看ens32网卡ip地址

cat /var/log/messages //查看日志

把主服务器的虚拟机关闭：systemctl stop keepalived

在备服务器输入：ip addr show ens32 就能显示

keepalived双机热备

原文：http://blog.51cto.com/14158297/2339443