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:
首先是安装ipvsadm管理程序
下载：
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
我们可以失望，但不能盲目。
