lvs dr模式安装

环境：centos5.5 （注：测试环境均为centos5.5，在虚拟机上虚拟三个centos系统）

vip 192.168.3.169

lb真是ip192.168.3.168

server1 ip:192.168.10.2

server1 ip:192.168.10.3

rpm包安装ipvsadmin

I lb上边配置

1 复制网卡ifcfg-eth0:1

DEVICE=eth0:1

BOOTPROTO=none

IPADDR=192.168.3.169

NETMASK=255.255.0.0

ONBOOT=yes

2 开启路由转发功能 vim /etc/sysctl.conf

net.ipv4.ip_forward = 1

3添加脚本

#!/bin/sh

ipvsadm -C

ipvsadm -A -t 192.168.3.169:80 -s wlc

ipvsadm -a -t 192.168.3.169:80 -r 192.168.10.2 -g

ipvsadm -a -t 192.168.3.169:80 -r 192.168.10.3 -g

II server上边配置

1 cp换回接口 ifcfg-lo:1

DEVICE=lo:1

IPADDR=192.168.3.169

NETMASK=255.255.255.255

NETWORK=192.168.3.169

ONBOOT=yes

ARP=no

2开启路由转发 vim /etc/sysctl.conf

net.ipv4.ip_forward = 1

添加

net.ipv4.conf.lo.arp_ignore = 1

net.ipv4.conf.all.arp_announce = 2

net.ipv4.conf.all.arp_ignore = 1

net.ipv4.conf.all.arp_announce = 2

使用sysctl -p 保存

两台服务器同样的配置

III 在lb上启动ipvsadm

service ipvsadm start

Clearing the current IPVS table: [确定]

Applying IPVS configuration: /etc/init.d/ipvsadm: line 62: /etc/sysconfig/ipvsadm: 没有那个文件或目录

[失败]

出现这样的错误service ipvsadm save 然后再重启

运行刚才的脚本

查看状态

ipvsadm -L -n

IP Virtual Server version 1.2.1 (size=4096)

Prot LocalAddress:Port Scheduler Flags

-> RemoteAddress:Port Forward Weight ActiveConn InActConn

TCP 192.168.3.169:80 wlc

-> 192.168.10.3:80 Route 1 0 28

-> 192.168.10.2:80 Route 1 0 27