LINUX负载均衡LVS之DR模型
LINUX负载均衡LVS之DR模型LVS-DR（Direct Routing）:直接路由模型
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特点：
①RealServer和Director必须处于同一IP段.
②这种模型最多支持的Real节点数目100个.
③由于要对数据包只经过了3次处理，所以效率很好.
④由于Real节点最后直接将请求返回给Client，所以RealServer没有必要网关参数.
案例：
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DIRECTOR
地址参数
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重启网络服务
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安装lvs用户空间的工具ipvsadm
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编写ipvsadm转发功能
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保存下来
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SERVER1
修改内核参数对192.168.2.100的arp请求不作出回应
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重启网络服务
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最好添加一条路由
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安装web服务器
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# service httpd restart
设置开机启动
# chkconfig httpd on
SERVER2
修改内核参数对192.168.2.100的arp请求不作出回应
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修改地址参数
# service httpd restart
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重启网络服务
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同样也添加一条路由
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安装web服务器
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设置开机启动
# chkconfig httpd on
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通过我们的宿主机来访问一下
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刷新一下
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因为是RR轮询调度算法，所以他们的连接数是一样的。
存储Nas采用（nfs）
地址参数
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在虚拟机上放入VWnet2区域
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创建共享目录
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安装nfs文件共享
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Server1
地址参数
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也放入VMnet2区域
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挂载文件
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Server2
地址参数
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也放入VMnet2区域
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挂载文件
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下面我们来访问一下
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你会发现不管怎么刷新都是不会变的。
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