LVS三种模式配置

LVS三种模式配置
LVS三种（LVS-DR,LVS-NAT,LVS-TUN）模式的简要配置

LVS是什么:

http://www.linuxvirtualserver.org/VS-NAT.html

http://www.linuxvirtualserver.org/VS-IPTunneling.html

http://www.linuxvirtualserver.org/VS-DRouting.html

首先是安装ipvsadm管理程序

下载：http://www.linuxvirtualserver.org/software/

注意对应自己的内核版本

ipvsadm-1.24.tar.gz

tar zxvf ipvsadm-1.24.tar.gz

cd ipvsadm-1.24

make

make install

1： LVS-DR 模式(调度器与实际服务器都有一块网卡连在同一物理网段上)

简要的网络结构如下所示



配置LVS server

引用
#！/bin/sh

VIP=192.168.0.210

RIP1=192.168.0.175

RIP2=192.168.0.145

. /etc/rc.d/init.d/functions

case "$1" in

start)

echo "start LVS of DirectorServer"

#Set the Virtual IP Address

/sbin/ifconfig eth0:1 $VIP broadcast $VIP netmask 255.255.255.255 up

/sbin/route add -host $VIP dev eth0:1

#Clear IPVS Table

/sbin/ipvsadm -C

#Set Lvs

/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

#Run Lvs

/sbin/ipvsadm

;;

stop)

echo "close LVS Directorserver"

/sbin/ipvsadm -C

/sbin/ifconfig eth0:1 down

;;

*)

echo "Usage： $0 {start|stop}"

exit 1

esac

配置 RIP server

引用
#!/bin/bash

VIP=192.168.0.210

LOCAL_Name=50bang

BROADCAST=192.168.0.255 #vip's broadcast

. /etc/rc.d/init.d/functions

case "$1" in

start)

echo "reparing for Real Server"

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

ifconfig lo:0 $VIP netmask 255.255.255.255 broadcast $BROADCAST up

/sbin/route add -host $VIP dev lo:0

;;

stop)

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: lvs {start|stop}"

exit 1

esac

2: LVS-TUN 模式

简要的网络架构如下:



配置lvs server

引用

#!/bin/sh

# description: start LVS of Directorserver

VIP=192.168.25.41（注意，lvs server那台机器2个ip，一个是vip,一个是本身ip例如192.168.25.42）

RIP1=192.168.25.44

RIP2=192.168.25.45

#RIPn=192.168.0.n

GW=192.168.25.254

. /etc/rc.d/init.d/functions

case "$1" in

start)

echo " start LVS of DirectorServer"

# set the Virtual IP Address

/sbin/ifconfig tunl0 $VIP broadcast $VIP netmask 255.255.255.0 up

/sbin/route add -host $VIP dev tunl0

#Clear IPVS table

/sbin/ipvsadm -C

#set LVS

/sbin/ipvsadm -A -t $VIP:80 -s rr

/sbin/ipvsadm -a -t $VIP:80 -r $RIP1:80 -i

/sbin/ipvsadm -a -t $VIP:80 -r $RIP2:80 -i

#/sbin/ipvsadm -a -t $VIP:80 -r $RIP3:80 -i

#Run LVS

/sbin/ipvsadm

#end

;;

stop)

echo "close LVS Directorserver"

ifconfig tunl0 down

/sbin/ipvsadm -C

;;

*)

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

exit 1

esac

.

配置real server

引用
#!/bin/sh

# ghb in 20060812

# description: Config realserver tunl port and apply arp patch

VIP=192.168.25.43

. /etc/rc.d/init.d/functions

case "$1" in

start)

echo "Tunl port starting"

ifconfig tunl0 $VIP netmask 255.255.255.0 broadcast $VIP up

/sbin/route add -host $VIP dev tunl0

echo "1" > /proc/sys/net/ipv4/conf/tunl0/arp_ignore

echo "2" > /proc/sys/net/ipv4/conf/tunl0/arp_announce

echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore

echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce

sysctl -p

;;

stop)

echo "Tunl port closing"

ifconfig tunl0 down

echo 1 > /proc/sys/net/ipv4/ip_forward

echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce

;;

*)

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

exit 1

esac

3: LVS-NAT 模式

简要的网络架构如下图:



配置LVS server

引用
#!/bin/sh

# description: start LVS of Nat

VLAN-IP=202.99.59.110

RIP1=10.1.1.2

RIP2=10.1.1.3

#RIPn=10.1.1.n

GW=10.1.1.1

. /etc/rc.d/init.d/functions

case "$1" in

start)

echo " start LVS of NAtServer"

echo "1" >/proc/sys/net/ipv4/ip_forward

echo "0" > /proc/sys/net/ipv4/conf/all/send_redirects

echo "0" > /proc/sys/net/ipv4/conf/default/send_redirects

echo "0" > /proc/sys/net/ipv4/conf/eth0/send_redirects

echo "0" > /proc/sys/net/ipv4/conf/eth1/send_redirects(内网卡上的)

#Clear IPVS table

/sbin/ipvsadm -C

#set LVS

/sbin/ipvsadm -a -t 202.99.59.110:80 -r 10.1.1.2:80 -m -w 1

/sbin/ipvsadm -a -t 202.99.59.110:80 -r 10.1.1.3:80 -m -w 1

#Run LVS

/sbin/ipvsadm

#end

;;

stop)

echo "close LVS Nat server"

echo "0" >/proc/sys/net/ipv4/ip_forward

echo "1" > /proc/sys/net/ipv4/conf/all/send_redirects

echo "1" > /proc/sys/net/ipv4/conf/default/send_redirects

echo "1" > /proc/sys/net/ipv4/conf/eth0/send_redirects

echo "1" > /proc/sys/net/ipv4/conf/eth1/send_redirects(内网卡上的)

/sbin/ipvsadm -C

;;

*)

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

exit 1

esac

配置real server

LVS-Nat 模式的后端机器不需要配置.

tips： -g 表示使用DR方式，-m表示NAT方式，-i表示tunneling方式。

转载:http://icarusli.iteye.com/blog/625530