RHEL6.5----LVS（NAT）

主机名	IP	所需软件
master	192.168.30.130（Nat） 192.168.17.130（VMnet4）	ipvsadm
node-1	192.168.17.131	httpd
node-2	192.168.17.132	httpd

在master上安装ipvsadm

[root@master ~]# yum install -y ipvsadm #配置好本地YUM源即可
启动ipvsadm
[root@master ~]# /etc/init.d/ipvsadm start
ipvsadm: Clearing the current IPVS table:                  [  OK  ]
ipvsadm: Applying IPVS configuration:                      [  OK  ]

修sysctl.conf文件，实现路由转发

[root@master ~]# vim /etc/sysctl.conf
..........
net.ipv4.ip_forward =
..........
使立即生效
[root@master ~]# sysctl -p
net.ipv4.ip_forward =
........

使用ipvsadm添加规则

[root@master ~]# ipvsadm -A -t 192.168.30.130: -s rr
参数说明
    -A 添加
    -t 表示 TCP 的服务   VIP：PORT
    -s 指定调度算法   rr 表示 round-robin 轮循
[root@master ~]# ipvsadm -a -t 192.168.30.130: -r 192.168.17.131 -m
[root@master ~]# ipvsadm -a -t 192.168.30.130: -r 192.168.17.132 -m
保存规则
[root@master ~]# /etc/init.d/ipvsadm save
查看规则
[root@master ~]# service ipvsadm status
IP Virtual Server version 1.2. (size=)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.30.130: rr
  -> 192.168.17.131:            Masq
  -> 192.168.17.132:            Masq                             

[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
  -> 192.168.17.131:            Masq
  -> 192.168.17.132:            Masq                       

在node-1和node-2上

修改网关，创建测试页面并启动httpd服务

node-1和node-2上，IP设为192.168.17.131和192.168.17.，GATEWAY设置为192.168.17.。
安装httpd服务并创建测试页
[root@node- ~]# yum install -y httpd
[root@node- ~]# echo "<h1>This is the node-1 Web-Server:192.168.17.131</h1>" > /var/www/html/index.html
[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:                                            [FAILED]
Starting httpd:                                            [  OK  ]

测试

在linux终端

[root@master ~]# elinks 192.168.30.130: --dump
                  This is the node- Web-Server:192.168.17.132
[root@master ~]# elinks 192.168.30.130: --dump
                  This is the node- Web-Server:192.168.17.131
[root@master ~]# elinks 192.168.30.130: --dump
                  This is the node- Web-Server:192.168.17.132
[root@master ~]# elinks 192.168.30.130: --dump
                  This is the node- Web-Server:192.168.17.131

物理机浏览器

查看详细信息

[root@master ~]# ipvsadm -L -n -c #查看客户端连接realserver的情况
IPVS connection entries
pro expire state       source             virtual            destination
TCP :  TIME_WAIT   192.168.30.130: 192.168.30.130:  192.168.17.131:
TCP :  TIME_WAIT   192.168.30.130: 192.168.30.130:  192.168.17.131:
TCP :  TIME_WAIT   192.168.30.130: 192.168.30.130:  192.168.17.132:
TCP :  TIME_WAIT   192.168.30.130: 192.168.30.130:  192.168.17.131:
TCP :  TIME_WAIT   192.168.30.130: 192.168.30.130:  192.168.17.132:
TCP :  TIME_WAIT   192.168.30.130: 192.168.30.130:  192.168.17.132:
TCP :  TIME_WAIT   192.168.30.130: 192.168.30.130:  192.168.17.132:
TCP :  TIME_WAIT   192.168.30.130: 192.168.30.130:  192.168.17.131:
[root@master ~]# ipvsadm -L -n --rate #查看链接速率
IP Virtual Server version 1.2. (size=)
Prot LocalAddress:Port                 CPS    InPPS   OutPPS    InBPS   OutBPS
  -> RemoteAddress:Port
TCP  192.168.30.130:
  -> 192.168.17.131:
  -> 192.168.17.132:
清空内核虚拟服务表中所有记录
[root@master ~]# ipvsadm -C
[root@master ~]# ipvsadm -L -n --stats
IP Virtual Server version 1.2. (size=)
Prot LocalAddress:Port               Conns   InPkts  OutPkts  InBytes OutBytes
  -> RemoteAddress:Port