keepalived1，keepalived2中添加下列配置

vim /etc/keepalived/keepalived.conf

重启keepalived服务

systemctl restart keepalived

RS1端操作：

绑定VIP地址

root@RS1 ~#echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore

root@RS1 ~#echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore

root@RS1 ~#echo 2> /proc/sys/net/ipv4/conf/lo/arp_announce

root@RS1 ~#echo 2> /proc/sys/net/ipv4/conf/all/arp_announce

root@RS1 ~# ip addr a 192.168.30.111/32 dev lo

开启web服务

echo R1 > /var/www/html/index.html

systemctl restart httpd

RS2端操作：

root@RS2 ~#echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore

root@RS2 ~#echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore

root@RS2 ~#echo 2> /proc/sys/net/ipv4/conf/lo/arp_announce

root@RS2 ~#echo 2> /proc/sys/net/ipv4/conf/all/arp_announce

root@RS2 ~#ip addr a 192.168.30.111/32 dev lo

开启web服务

echo R1 > /var/www/html/index.html

systemctl restart httpd

此时在keepalived1,2端可看到lvs规则已生效：

客户端测试访问：

模拟keepalived2停止服务

systemctl stop keepalived

抓包keepalived1，可见keepalived将继续保持VIP的正常运行

模拟RS1停止web服务

systemctl stop httpd

此时查看lvs规则中，RS1已自动剔除

当两台REAL SERVER都下线时，将自动转向到本机的SORRY SERVER

模拟RS2停止web服务

systemctl stop httpd

客户端访问将指向SORRY SERVER