6、LVS DR模式配置
    (1)客户端配置
       eth0(ip):172.17.10.252
       网关(GW):172.17.10.250

    (2)防火墙配置
       eth0:172.17.10.250
       eth1:192.168.10.1
       eth1:0 192.168.20.1

       # vim /etc/sysctl.conf
         net.ipv4.ip_forward = 1
       # sysctl -p
       # iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT --to 192.168.10.10
       # service iptables save

    (3)调度服务器配置
       # ipvsadm -A -t 192.168.10.10:80 -s wrr -p 300
       # ipvsadm -a -t 192.168.10.10:80 -r 192.168.20.21:80 -g -w 2
       # ipvsadm -a -t 192.168.10.10:80 -r 192.168.20.22:80 -g -w 3

    (4)真是服务器(RS1)配置
       eth0:192.168.20.21
       VIP:192.168.10.10

       配置真实服务器进行arp广播和回应
       # vim /etc/sysctl.conf
       net.ipv4.conf.lo.arp_ignore = 1
       net.ipv4.conf.lo.arp_announce = 2
       net.ipv4.conf.all.arp_ignore = 1
       net.ipv4.conf.all.arp_announce = 2
echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
 echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
 echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
 echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce






       # rpm -ivh arptables_jf*
       # arptables -A IN  -d 192.168.10.10 -j DROP

       # ifconfig lo:0 192.168.10.10 netmask 255.255.255.0 broadcast 192.168.10.10

       # route add -host 192.168.10.10 dev lo:0