拓扑图：
1、LVS配置脚本：
需要安装：ipvsadm-1.24-10.i386.rpm
vi /etc/rc.d/init.d/lvsdr
#!/bin/bash
vip=192.168.1.249
web1=192.168.1.251
web2=192.168.1.252
./etc/rc.d/init.d/functions
case "$1" in
start)
echo "start lvs-dr"
echo "1" > /proc/sys/net/ipv4/ip_forward
ifconfig eth0:0 ${vip} broadcast ${vip} netmask 255.255.255.255 up
route add -host ${vip} dev eth0:0
ipvsadm -C
ipvsadm -A -t ${vip}:80 -s rr
ipvsadm -a -t ${vip}:80 -r ${web1}:80 -g
ipvsadm -a -t ${vip}:80 -r ${web2}:80 -g
ipvsadm
;;
stop)
echo "stop lvs-dr"
echo "0" >/proc/sys/net/ipv4/ip_forward
ipvsadm -C
ifconfig eth0:0 down
;;
*)
echo "Usage:$0 {start|stop}"
exit 1
esac
启动：
[root@linux-1 lvs]# service lvsdr start
start lvs-dr
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.1.249:http rr
-> 192.168.1.252:http Route 1 0 0
-> 192.168.1.251:http Route 1 0 0
二、web1配置脚本
vi /etc/rc.d/init.d/lvsweb
#!/bin/bash
vip=192.168.1.249
./etc/rc.d/init.d/functions
case "$1" in
start)
echo "start lvs-web1"
ifconfig lo:0 ${vip} broadcast ${vip} netmask 255.255.255.255 up
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)
echo "stop lvs-web1"
ifconfig lo:0 down
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
启动脚本：
[root@linux-2 local]# service lvsweb start
start lvs-web1
在web1上/var/www/html 创建一个文件为index.html
cat /var/www/html/index.html
the is web1
三、web2配置脚本
vi /etc/rc.d/init.d/lvsweb
#!/bin/bash
vip=192.168.1.249
./etc/rc.d/init.d/functions
case "$1" in
start)
echo "start lvs-web2"
ifconfig lo:0 ${vip} broadcast ${vip} netmask 255.255.255.255 up
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)
echo "stop lvs-web2"
ifconfig lo:0 down
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:$0 {start|stop}"
exit 1
esac
启动脚本：
[root@linux-3 ~]# service lvsweb start
start lvs-web2
在web2上/var/www/html 创建一个文件为index.html
cat /var/www/html/index.html
the is web2
#####################到此简单的LVS-DR集群成功##################
四，监控LVS (在LVS服务器上安装)
1、安装rrdtool工具
wget http://down1.chinaunix.net/distfiles/rrdtool-1.2.30.tar.gz
tar zxvf rrdtool-1.2.30.tar.gz
cd rrdtool-1.2.30
./configure --prefix=/usr/local/rrdtool
make&&make install
echo “/usr/local/rrdtool/lib” >>/etc/ld.so.conf
ldconf -v
2、安装lvs-rrd
wget http://tepedino.org/lvs-rrd/lvs-rrd-v0.7.tar.gz
tar tar zxvf lvs-rrd-v0.7.tar.gz
mv lvs-rrd-v0.7 /var/www/html/lvs-rrd
3、配置lvs-rrd
cd /var/www/html/lvs-rrd
vi lvs.rrd.update (只需要配置指定的路径即可)
RRDTOOL="/usr/local/rrdtool/bin/rrdtool"
IPVSADM="/sbin/ipvsadm"
WORKDIR="/var/www/html/lvs-rrd"
vi graph-lvs.sh
WORKDIR="/var/www/html/lvs-rrd"
RRDTOOL="/usr/local/rrdtool/bin/rrdtool"
GRAPHS="$WORKDIR/graphs"
WEBPATH="/lvs-rrd/graphs"
4、设置权限：
chown -R apache.apache graphs/
5 、使用crontab 更新
crontab -e
* * * * * /var/www/html/lvs-rrd/lvs.rrd.update 2> /dev/null > /dev/null
#######################到此监控安装完毕##############################
测试结果：
