LVS+keepalived搭建DR模式架构实验

rwewqe

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：