主机名
IP
所需软件
master
eth0==>192.168.30.140(Nat)
eth0:1==>192.168.17.130(Nat)
ipvsadm
node-1
eth0==>192.168.17.131
httpd
node-2
eth0==>192.168.17.132
在master上安装及开启ipvsadm
[root@master ~]# yum install -y ipvsadm
[root@master ~]# cd /etc/sysconfig/network-scripts/
[root@master network-scripts]# cp ifcfg-eth0 ifcfg-eth:1
[root@master network-scripts]# vim ifcfg-eth0:1 #只需修改绿色部分三处，其他不要动
DEVICE=eth0:1
TYPE=Ethernet
UUID=a186cc9d-8d79-4027-a180-a1b17d884a7b
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=none
HWADDR=00:0C:29:4D:47:50
IPADDR=192.168.30.130
PREFIX=24
GATEWAY=192.168.30.2
DNS1=119.29.29.29
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME="System eth0:1"
重启网络服务
[root@master ~]# service network restart
Shutting down interface eth0: Device state: 3 (disconnected)
[ OK ]
Shutting down interface eth1: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: Active connection state: activated
Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/1
[ OK ]
[root@master ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:4D:47:50
inet addr:192.168.30.140 Bcast:192.168.30.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe4d:4750/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:81 errors:0 dropped:0 overruns:0 frame:0
TX packets:105 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:8687 (8.4 KiB) TX bytes:8194 (8.0 KiB)
eth0:1 Link encap:Ethernet HWaddr 00:0C:29:4D:47:50 #MAC地址一定要与eth0的一样
inet addr:192.168.30.130 Bcast:192.168.30.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
添加规则
确保这里是0
[root@master ~]# sysctl -p
net.ipv4.ip_forward = 0
..........
添加规则
[root@master ~]# ipvsadm -A -t 192.168.30.130:80 -s rr
[root@master ~]# ipvsadm -a -t 192.168.30.130:80 -r 192.168.30.131 -g
[root@master ~]# ipvsadm -a -t 192.168.30.130:80 -r 192.168.30.132 -g
[root@master ~]# ipvsadm -L -n
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.30.130:80 rr
-> 192.168.30.131:80 Route 1 0 0
-> 192.168.30.132:80 Route 1 0 0
保存规则
[root@master ~]# /etc/init.d/ipvsadm save
ipvsadm: Saving IPVS table to /etc/sysconfig/ipvsadm: [ OK ]
在realserver(node-1和node-2)上
生成ifcfg-lo:1文件
[root@node-1 ~]# cd /etc/sysconfig/network-scripts/
[root@node-1 network-scripts]# cp ifcfg-lo ifcfg-lo:1
[root@node-1 network-scripts]# vim ifcfg-lo:1
DEVICE=lo:1
IPADDR=192.168.30.130
NETMASK=255.255.255.255
# If you're having problems with gated making 127.0.0.0/8 a martian,
# you can change this to something else (255.255.255.255, for example)
ONBOOT=yes
NAME=loopback
关闭ARP转发
[root@node-1 ~]# vim /etc/sysctl.conf #末未添加
net.ipv4.conf.eth0.arp_ignore = 1
net.ipv4.conf.eth0.arp_announce = 2
[root@node-1 ~]# sysctl -p #使立即生效
net.ipv4.ip_forward = 0
.....
net.ipv4.conf.eth0.arp_ignore = 1
net.ipv4.conf.eth0.arp_announce = 2
修改网关
[root@node-1 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
GATEWAY=192.168.30.2
#网关修改为指向外网出口的路由器IP
创建测试页面
[root@node-1 ~]# echo "<h1>This is the node-1 Web-Server:192.168.17.131</h1>" > /var/www/html/index.html
在node-2上
[root@node-2 ~]# cd /etc/sysconfig/network-scripts/
[root@node-2 network-scripts]# cp ifcfg-lo ifcfg-lo:1
[root@node-2 network-scripts]# vim ifcfg-lo:1
DEVICE=lo:1
IPADDR=192.168.30.130
NETMASK=255.255.255.255
# If you're having problems with gated making 127.0.0.0/8 a martian,
# you can change this to something else (255.255.255.255, for example)
ONBOOT=yes
NAME=loopback
[root@node-2 ~]# service network restart
Shutting down interface eth0: Device state: 3 (disconnected)
[ OK ]
Shutting down interface eth1: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: Active connection state: activated
Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/3
[ OK ]
[root@node-2 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:50:56:2F:84:4D
inet addr:192.168.30.132 Bcast:192.168.30.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fe2f:844d/64 Scope:Link
...................
lo:1 Link encap:Local Loopback
inet addr:192.168.30.130 Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:16436 Metric:1
关闭ARP转发通node-1操作一样；
创建测试页面
[root@node-2 ~]# echo "<h1>This is the node-2 Web-Server:192.168.17.132</h1>" > /var/www/html/index.html
[root@node-2 ~]# service httpd restart
Stopping httpd: [ OK ]
Starting httpd: [ OK ]
物理机使用浏览器访问测试
