lvs-安装准备

1. 准备三台虚拟机
2. 先配置3台虚拟机的网络：

•            Eth0，配置在一个网段
•            DIP，RIP在一个网段

      3.配置lvs的VIP

           -ifconfig eth0:0 192.168.9.100/24

           -echo “1” > /proc/sys/net/ipv4/ip_forward

       4.调整RS的响应，通告级别（每一台RS都配）：

           - echo 1 > /proc/sys/net/ipv4/conf/eth0/arp_ignore

           - echo 2 > /proc/sys/net/ipv4/conf/eth0/arp_announce

           - echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore

           - echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce

        5.配置RS的VIP（每一台RS都配）:

           - Ifconfig Io:8 192.168.9.100 netmask 255:255:255:255

如下图：

       6.启动RS上的httpd

             - yum install httpd -y

             - /var/www/html

                   ·vi index.html

                   ·from ooxxip

              - service httpd start

                    ·客户端验证：RIP：80 能显示

                                         -  VIP: 80不能显示

       7.LVS(Linux Virtual Server) Linux虚拟服务器 ---------- ipvsadm

          - yum install ipvsadm -y

          - ipvsadm -A -t 192.168.154.100:80 -s rr

          - ipvsadm -a -t 192.168.154.100:80 -r 192.168.154.130 -g

          - ipvsadm -a -t 192.168.154.100:80 -r 192.168.154.131 -g

          - ipvsadm -ln

          - 浏览器刷新:访问vip

          - ipvsadm -lnc

          - ipvsadm -natp