拓扑图：
测试环境：CentOS 6.5 X86 64位
配置步骤：
1、 安装测试环境
[root@UCS-1 ~]# yum -y install httpd
[root@UCS-1 ~]# chkconfig --add httpd
[root@UCS-1 ~]# chkconfig --level 35 httpd on
[root@UCS-1 ~]# cd /var/www/html/
[root@UCS-1 html]# touch index.html
[root@UCS-1 html]# vi index.html
<h1>服务器IP地址:192.168.5.11</h1>
[root@UCS-1 html]# chown -R apache:apache index.html
[root@UCS-1 html]# /etc/init.d/httpd start
[root@UCS-2 ~]# yum -y install httpd
[root@UCS-2 ~]# chkconfig --add httpd
[root@UCS-2 ~]# chkconfig --level 35 httpd on
[root@UCS-2 ~]# vi /etc/httpd/conf/httpd.conf
[root@UCS-2 ~]# cd /var/www/html/
[root@UCS-2 html]# touch index.html
[root@UCS-2 html]# vi index.html
<h1>服务器IP地址:192.168.5.12</h1>
[root@UCS-2 html]# chown -R apache:apache index.html
[root@UCS-2 html]# /etc/init.d/httpd start
2、 安装LVS软件
[root@UCS-3 data]# wget http://www.linuxvirtualserver.org/software/kernel-2.6/ipvsadm-1.24.tar.gz
[root@UCS-3 data]# tar zxvf ipvsadm-1.24.tar.gz
[root@UCS-3 data]# cd ipvsadm-1.24
[root@UCS-3 ipvsadm-1.24]# ln -s /usr/src/kernels/2.6.32-431.el6.x86_64/ /usr/src/linux
[root@UCS-3 ipvsadm-1.24]# make all
[root@UCS-3 ipvsadm-1.24]# make install
[root@UCS-3 ipvsadm-1.24]# ipvsadm --version
ipvsadm v1.24 2005/12/10 (compiled with getopt_long and IPVS v1.2.1)
[root@UCS-3 ipvsadm-1.24]#
3、 配置网卡
[root@UCS-3 data]# cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth0:0
[root@UCS-3 data]# vi /etc/sysconfig/network-scripts/ifcfg-eth0:0
DEVICE=eth0:0
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
IPADDR=192.168.5.10
NETMASK=255.255.255.255
打开网卡转发功能
[root@UCS-3 data]# vi /etc/sysctl.conf
net.ipv4.ip_forward =1
[root@UCS-3 data]# sysctl –p
[root@UCS-3 data]# route add -host 192.168.5.10 dev eth0:0
[root@UCS-1 ~]# cp /etc/sysconfig/network-scripts/ifcfg-lo /etc/sysconfig/network-scripts/ifcfg-lo:0
[root@UCS-1 ~]# vi /etc/sysconfig/network-scripts/ifcfg-lo:0
DEVICE=lo:0
IPADDR=192.168.5.10
NETMASK=255.255.255.255
ONBOOT=yes
关闭ARP广播响应
#!/bin/bash
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
[root@UCS-2
~]# cp /etc/sysconfig/network-scripts/ifcfg-lo
/etc/sysconfig/network-scripts/ifcfg-lo:0
[root@UCS-2
~]# vi /etc/sysconfig/network-scripts/ifcfg-lo:0
DEVICE=lo:0
IPADDR=192.168.5.10
NETMASK=255.255.255.255
ONBOOT=yes
~ 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
~[root@UCS-2
~]# sysctl –p
[root@UCS-2
~]# /etc/init.d/network restart
[root@UCS-2
~]# route add -host 192.168.5.10 dev lo:0
[root@UCS-3
~]# ipvsadm –C
[root@UCS-3
~]# ipvsadm -At 192.168.5.10:80 -s rr
[root@UCS-3
~]# ipvsadm -at 192.168.5.10:80 -r 192.168.5.11:80 -g
[root@UCS-3
~]# ipvsadm -at 192.168.5.10:80 -r 192.168.5.12:80 –g
[root@UCS-3
~]# ipvsadm -L -n
IP
Virtual Server version 1.2.1 (size=4096)
Prot
LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.5.10:80 rr
-> 192.168.5.12:80 Route 1
0 3
-> 192.168.5.11:80 Route 1
0 2
[root@UCS-3
~]#
[root@UCS-3
~]# ipvsadm -L -c
IPVS
connection entries
pro
expire state source virtual destination
TCP
01:29 FIN_WAIT 192.168.101.190:51228
192.168.5.10:http 192.168.5.11:http
TCP
01:35 FIN_WAIT 192.168.101.190:51231
192.168.5.10:http 192.168.5.12:http
TCP
01:29 FIN_WAIT 192.168.101.190:51227
192.168.5.10:http 192.168.5.12:http
4、 测试如下