RHEL 6.5----LVS（DR）

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:
[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:
TYPE=Ethernet
UUID=a186cc9d-8d79--a180-a1b17d884a7b
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=none
HWADDR=:0C::4D::
IPADDR=192.168.30.130
PREFIX=
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:  (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/
                                                           [  OK  ]
[root@master ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr :0C::4D::
          inet addr:192.168.30.140  Bcast:192.168.30.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fe4d:/ Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:  Metric:
          RX packets: errors: dropped: overruns: frame:
          TX packets: errors: dropped: overruns: carrier:
          collisions: txqueuelen:
          RX bytes: (8.4 KiB)  TX bytes: (8.0 KiB)

eth0:    Link encap:Ethernet  HWaddr :0C::4D::  #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:  Metric:

添加规则

确保这里是0
[root@master ~]# sysctl -p
net.ipv4.ip_forward =
..........
添加规则
[root@master ~]# ipvsadm -A -t 192.168.30.130: -s rr
[root@master ~]# ipvsadm -a -t 192.168.30.130: -r 192.168.30.131 -g
[root@master ~]# ipvsadm -a -t 192.168.30.130: -r 192.168.30.132 -g
[root@master ~]# ipvsadm -L -n
IP Virtual Server version 1.2. (size=)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.30.130: rr
  -> 192.168.30.131:            Route
  -> 192.168.30.132:            Route
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- ~]# cd /etc/sysconfig/network-scripts/
[root@node- network-scripts]# cp ifcfg-lo ifcfg-lo:
[root@node- network-scripts]# vim ifcfg-lo:
DEVICE=lo:
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- ~]# vim /etc/sysctl.conf  #末未添加
net.ipv4.conf.eth0.arp_ignore =
net.ipv4.conf.eth0.arp_announce =
[root@node- ~]# sysctl -p  #使立即生效
net.ipv4.ip_forward =
.....
net.ipv4.conf.eth0.arp_ignore =
net.ipv4.conf.eth0.arp_announce = 

修改网关

[root@node- ~]# 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- ~]# 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- ~]# cd /etc/sysconfig/network-scripts/
[root@node- network-scripts]# cp ifcfg-lo ifcfg-lo:
[root@node- network-scripts]# vim ifcfg-lo:
DEVICE=lo:
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- ~]# service network restart
Shutting down interface eth0:  Device state:  (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/
                                                           [  OK  ]
[root@node- ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr :::2F::4D
          inet addr:192.168.30.132  Bcast:192.168.30.255  Mask:255.255.255.0
          inet6 addr: fe80:::56ff:fe2f:844d/ Scope:Link
...................
lo:      Link encap:Local Loopback
          inet addr:192.168.30.130  Mask:255.255.255.255
          UP LOOPBACK RUNNING  MTU:  Metric:

关闭ARP转发通node-1操作一样；

创建测试页面

[root@node- ~]# echo "<h1>This is the node-2 Web-Server:192.168.17.132</h1>" > /var/www/html/index.html
[root@node- ~]# service httpd restart
Stopping httpd:                                            [  OK  ]
Starting httpd:                                            [  OK  ]

物理机使用浏览器访问测试