LVS配置（DR模式）
一、调度控制器启动脚本（DR模式）vi /etc/init.d/lvsdsdr
#!/bin/bash
#descriptions:start LVS of Diectorserver DR
VIP=172.16.23.172
RIP1=172.16.23.173
RIP2=172.16.23.175
. /etc/rc.d/init.d/functions
case "$1" in
start)
echo "start LVS of DirectorServer DR"
/sbin/ifconfig eth0:0 $VIP broadcast $VIP netmask 255.255.255.255 up
/sbin/route add -host $VIP dev eth0:0
echo "1" >/proc/sys/net/ipv4/ip_forward
/sbin/ipvsadm -C
/sbin/ipvsadm -A -t $VIP:80 -s rr
/sbin/ipvsadm -a -t $VIP:80 -r $RIP1:80 -g
/sbin/ipvsadm -a -t $VIP:80 -r $RIP2:80 -g
/sbin/ipvsadm
;;
stop)
echo "stop LVS of DirectorServer DR"
echo "0" >/proc/sys/net/ipv4/ip_forward
/sbin/ipvsadm -C
/sbin/ifconfig eth0:0 down
;;
*)
echo "Usage:$0 {start|stop}"
ext 1
esac
脚本可执行模式
chmod +x /etc/init.d/lvsdsdr
启动脚本（以服务方式启动）
service lvsdsdr start
http://250688049.blog.运维网.com/attachment/201204/30/643101_1335804467hxLh.png
二、realserver真实节点服务器配置
vi /etc/init.d/lvsrsdr
#!/bin/bash
#description : start realserver DR
VIP=172.16.23.172
. /etc/rc.d/init.d/functions
case "$1" in
start)
echo "start LVS of RealServer DR"
/sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up
/sbin/route add -host $VIP dev lo:0
echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" >proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" >proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" >proc/sys/net/ipv4/conf/all/arp_announce
;;
Stop)
/sbin/ifconfig lo:0 down
echo "close LVS of RealServer DR"
echo "0" >proc/sys/net/ipv4/conf/lo/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "0">/proc/sys/net/ipv4/conf/all/arp_ignore
echo "0">/proc/sys/net/ipv4/conf/all/arp_announce
;;
*)
echo "Usage:$0 {start|stop}"
exit 1
esac
脚本可执行模式
chmod +x /etc/init.d/lvsrsdr
启动脚本（以服务方式启动）
service lvsrsdr start
http://250688049.blog.运维网.com/attachment/201204/30/643101_1335804468W6gp.png
Ifconfig
http://250688049.blog.运维网.com/attachment/201204/30/643101_1335804470u3bh.png
三、测试功能
访问http://172.16.23.172
查看调度服务器策略
ipvsadm
http://250688049.blog.运维网.com/attachment/201204/30/643101_13358044756DqO.png
注意事项：
1、VIP和真实应用服务器在同一网段。
2、负载调度器和真实应用服务器使用该VIP地址。
3、VIP绑定在调度器接口 eth0：0。
4、VIP绑定在真实服务器回环接口上 lo：0。
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