04-LVS的DR模型实现

一、准备网络拓扑图

 

 

 

二、准备网络环境

client：192.168.37.6

route：192.168.37.7

lvs:            dip192.168.37.37 vip:192.168.37.100

rlserver1:  rip：192.168.37.17 vip:192.168.37.100

rlserver2:  rip：192.168.37.27 vip:192.168.37.100

 

1：route修改内核参数，开启路由功能。

 

 

2、rlserver脚本配置

#!/bin/bash

vip=192.168.37.100

mask='255.255.255.255‘

dev=lo:1

case $1 in

start)

echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore

echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore

echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce

echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce

ifconfig $dev $vip netmask $mask #broadcast $vip up

#route add -host $vip dev $dev

;;

stop)

ifconfig $dev down

echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore

echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore

echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce

echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce

;;

*)

echo "Usage: $(basename $0) start|stop"

exit 1

;;

esac

 

LVS的配置脚本

#!/bin/bash

vip='192.168.37.100'

iface=‘lo:1'

mask='255.255.255.255'

port='80'

rs1='192.168.37.17'

rs2='192.168.37.27'

scheduler='wrr'

type='-g'

case $1 in

start)

ifconfig $iface $vip netmask $mask #broadcast $vip up

iptables -F

ipvsadm -A -t ${vip}:${port} -s $scheduler

ipvsadm -a -t ${vip}:${port} -r ${rs1} $type -w 1

ipvsadm -a -t ${vip}:${port} -r ${rs2} $type -w 1

;;

stop)

ipvsadm -C

ifconfig $iface down

;;

*)

echo "Usage $(basename $0) start|stop“

exit 1

esac

 

下面lvs不适用脚本，手工进行操作：

yum -y install ipvsadm

 

注意：脚本只适合临时实验，工作中需要写到配置文件。