LVS+keepalived搭建DR模式架构实验

环境：

CentOS6.4  64bit

ipvsadm-1.24.tar.gz

keepalived-1.1.19.tar.gz

IP部署：

VIP:172.16.100.5

DIP1:172.16.100.1

DIP2:172.16.100.2

RIP1:172.16.100.3

RIP2:172.16.100.4

说明：VIP在防火墙上做映射

安装：

ln  -s  /usr/src/kernels/2.6.32-358.el6.x86_64/  /usr/src/linux

tar  zxvf   ipvsadm-1.24.tar.gz

cd  ipvsadm-1.24

make  &&  make install

tar zxvf   keepalived-1.1.19.tar.gz

yum install openssl-devel  popt-devel

cd keepalived-1.1.19

./configure

make

make install

cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/

cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/

mkdir /etc/keepalived

cp  /usr/local/etc/keepalived/keepalived.conf  /etc/keepalived/

cp /usr/local/sbin/keepalived  /usr/sbin

service keepalived start

安装完成。

配置RealServer：

#!/bin/bash

VIP=172.16.100.5

. /etc/init.d/functions

case  "$1" in

start)

/sbin/ifconfig lo:0 $VIP  netmask 255.255.255.255    broadcast  $VIP

/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

sysctl -p > /dev/null 2>&1

echo "RealServer Start OK"

;;

stop)

ifconfig lo:0  down

/sbin/route  del $VIP >  /dev/null 2>&1

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 "RealServer Stop OK"

;;

*)

echo "Usage: $0 {start|stop}"

exit 1

esac

exit 0

配置完成。

配置负载均衡器：