LVS DR 拓扑图

   Client        
     |
|------> GW
|      |      eth1 192.168.122.254 vip  访问地址
|    Director
|      |     eth0 192.168.122.100 dip  
|    ----------
|-------|     |
     Real A   Real B

客户端设置
client 192.168.122.1

Director 分发服务器
dip eth0 192.168.122.254
vip eth1 192.168.122.100

安装ipvsadm
yum install ipvsadm
创建分发服务器
ipvsadm -A -t 192.168.122.254:80 -s rr
ipvsadm -a -t 192.168.122.254:80 -r 192.168.122.11:80 -g
ipvsadm -a -t 192.168.122.254:80 -r 192.168.122.12:80 -g
保存配置
ipvsadm-save > /etc/sysconfig/ipvsadm
设置开机启动
chkconfig --level 35 ipvsadm on

配置web1＆web2 除IP地址不同 其它全一样
web1 & web2
192.168.122.11 & 192.168.122.12
安装httpd服务
yum install httpd
echo "111111" /var/www/html/index.html
永久配置lo:1网卡信息
cd /etc/sysconfig/network-scripts/
cp ifcfg-lo ifcfg-lo:1
写入以下信息
DEVICE=lo:1
IPADDR=192.168.122.254
NETMASK=0.0.0.0
NETWORK=192.168.122.0
BROADCAST=192.168.122.255
ONBOOT=yes
NAME=loopback
配置内核参数
vim /etc/sysctl.conf
net.ipv4.conf.eth0.arp_ignore = 1
net.ipv4.conf.eth0.arp_announce = 2