lvs dr模式需要將lvs和後端的ｎｇｉｎｘ＋ｔｏｍｃａｔ部署在同乙個區域網內。其架構圖如圖１所示。
圖1 lvs（dr）+nginx+tomcat部署架構圖
系統：centos 6.3
核心：2.6.32-279.el6.i686
ø popt-1.14.tar.gz
ø libnl-devel-1.1-14.el6.i686.rpm
ø ipvsadm-1.26.tar.gz
1.
# yum install kernel-devel #
沒有核心原始碼的需安裝
kernel-devel
2.
#tar zxvf popt-1.14.tar.gz
3.
# cd popt-1.14
4.
#./configure
5.
# make && make install
6.
# rpm -ivh libnl-devel-1.1-14.el6.i686.rpm
7.
#lsmod |grep ip_vs
8.
#uname -r
9.
2.6.32-279.el6.i686
10.
#ln -s /usr/src/kernels/2.6.32-279.el6.i686/ /usr/src/linux
11.
12.
#tar zxvf ipvsadm-1.26.tar.gz
13.
#cd ipvsadm-1.26
14.
#make && make install
15.
#find / -name ipvsadm #
檢視ipvsadm
的位置
16.
/sbin/ipvsadm
17.
/etc/rc.d/init.d/ipvsadm #
表明成功安裝
ｎｇｉｎｘ＋ｔｏｍｃａｔ配置見
nginx+tomcat負載均衡部署相關配置。這裡只介紹lvs dr模式相關配置。
# /usr/local/sbin/lvs-dr.sh
#!/bin/bash
# description: start lvs of directorserver
#written by :
gw=172.7.4.1
# website director vip.
vip=172.7.4.201
rip1=172.7.4.250
. /etc/rc.d/init.d/functions
logger $0 called with $1
case "$1" in
start)
echo " start lvs of directorserver"
# set lvs-vip
/sbin/ifconfig eth0:0 $vip broadcast $vip netmask 255.255.255.255 up
/sbin/route add -host $vip dev eth0:0
#clear ipvs table
/sbin/ipvsadm -c
#set lvs
/sbin/ipvsadm --set 30 5 60
/sbin/ipvsadm -a -t $vip:8080 -s wrr -p 3
/sbin/ipvsadm -a -t $vip:8080 -r $rip1:8080 -g -w 1
#add status condition
touch /var/lock/subsys/ipvsadm >/dev/null 2>&1
echo "ipvsadm is staring!!"
;;stop)
if [ ! -e /var/lock/subsys/ipvsadm ];then
echo "ipvsadm was stop!!"
exit 1
else
echo "close lvs directorserver"
#clean lvs rule
/sbin/ipvsadm -c
/sbin/ipvsadm -z
#down lvs-vip
/sbin/route del $vip
/sbin/ifconfig eth0:0 down
#/sbin/ifconfig eth0:1 down
#del status condition
rm -rf /var/lock/subsys/ipvsadm >/dev/null 2>&1
echo "ipvsadm stoped"
fi;;
status)
if [ ! -e /var/lock/subsys/ipvsadm ];then
echo "ipvsadm stoped!"
exit 1
else
echo "ipvsadm ok!"
fi ;; *)
echo "usage: $0 "
exit 1
esac
exit 0
/usr/local/sbin/lvs-dr.sh start 停止
/usr/local/sbin/lvs-dr.sh stop
# /usr/local/sbin/realserver.sh
#!/bin/bash
#written by :
sns_vip=172.7.4.201
. /etc/rc.d/init.d/functions
case "$1" in
start)
ifconfig lo:0 $sns_vip netmask 255.255.255.255 broadcast $sns_vip
/sbin/route add -host $sns_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
route del $sns_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 stoped"
;;*) echo "usage: $0 "
exit 1
esac
exit 0
/usr/local/sbin/realserver.shstop
啟動/usr/local/sbin/realserver.sh start
＃watch ipvsadm –ln
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