使用LVS實(shí)現(xiàn)高性能負(fù)載均衡實(shí)際操作說明

1、使用LVS實(shí)現(xiàn)高性能負(fù)載均衡實(shí)際操作說明kkmangnn 網(wǎng)站: 前言：本文使用lvs實(shí)現(xiàn)負(fù)載均衡 一. 網(wǎng)站負(fù)載均衡拓樸圖 . IP信息列表：主機(jī)名IP說明 LVS-DR-Master LVS-DR-BACKUP LVS-DR-VIP WEB1-Realserver WEB2-Realserver GateWay ，需要安裝有g(shù)cc openssl-devel kernel-devel包 二. 安裝LVS軟件包 1. 下載相關(guān)軟件包 #mkdir /usr/local/src/lvs #cd /usr/local/src/lvs #wget 2. 安裝LVS #lsmod |grep ip_

2、vs#uname -r#ln -s /usr/src/kernels/#make & make install三. 配置LVS實(shí)現(xiàn)負(fù)載均衡 1 LVS-DR，配置LVS腳本實(shí)現(xiàn)負(fù)載均衡應(yīng)， #!/bin/bash# website direcotor vip.case $1 in start)/sbin/ifconfig eth0:0 $SNS_VIP broadcast $SNS_VIP netmask 255.255.255.255 broadcast $SNS_VIP up/sbin/route add -host $SNS_VIP dev eth0:0/sbin/ipvsadm -A

3、-t $SNS_VIP:80 -s rr/sbin/ipvsadm -a -t $SNS_VIP:80 -r $SNS_RIP1:80 -g -w 1/sbin/ipvsadm -a -t $SNS_VIP:80 -r $SNS_RIP2:80 -g -w 1touch /var/lock/subsys/ipvsadm /dev/null 2&1 echo ipvsadm starting -OK ; stop) /sbin/ipvsadm -C ifconfig eth0:0 down route del $SNS_VIP rm -rf /var/lock/subsys/ipvsadm /d

4、ev/null 2&1 echo ipvsadm stoped ; status) if ! -e /var/lock/subsys/ipvadm ;then echo ipvsadm stoped - exit 1 else echo ipvsadm Running -OK fi ; *) echo Usage: $0 start|stop|status exit 1 esac exit 0 四 配置web服務(wù)器的腳本.#!/bin/bashcase $1 in start) ifconfig lo:0 $SNS_VIP netmask 255.255.255.255 broadcast $

5、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

6、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 start|stop exit 1 esac exit

7、0 # chmod +x /usr/local/src/lvs/web.sh #修改成可執(zhí)行#vi /etc/rc.local#將該腳本寫入開機(jī)文件/usr/local/src/lvs/web.sh start配置好一臺(tái)web服務(wù)器之后，將配置文件拷貝到第二臺(tái)服務(wù)器。3. 啟動(dòng)lvs-dr腳本和腳本，在DR上可以查看LVS當(dāng)前狀態(tài):rootdr1 /# /usr/local/sbin/lvs-dr.sh startipvsadm starting -OK4. 查看lvs服務(wù)是否正常 rootdr1 /# ipvsadmIP Virtual Server version (size=4096)Prot LocalAddress:Port Scheduler Flags - RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 19