lvs 负载均衡环境搭建

记录一下搭建lvs环境的步骤

当中master 10.0.0.11，backup 10.0.0.15。realserver1 10.0.0.119。realserver210.0.0.11

1.mkdir /usr/local/src/lvs

2.cd /usr/local/src/lvs

3.上传keepalived-1.1.20.tar.gz ipvsadm-1.24.tar.gz到指定目录

4.lsmod |grep ip_vs

5.uname -r

结果：2.6.32-431.el6.x86_64

6.ln -s /usr/src/kernels/2.6.32-431.el6.x86_64/  /usr/src/linux

7  tar zxvf ipvsadm-1.24.tar.gz

    cd ipvsadm-1.24

    make && make install

然后用 ipvsadm  进行測试



8. tar zxvf keepalived-1.1.20.tar.gz

cd keepalived-1.1.20

 ./configure  && make && make install

    find / -name keepalived  # 查看keepalived位置      

9. cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/

    cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/

    mkdir /etc/keepalived

    cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/

    cp /usr/local/sbin/keepalived /usr/sbin/

    service keepalived start|stop     #做成系统启动服务方便管理.  



10

 vim /etc/init.d/lvsdr

    

    #!/bin/bash

    RIP1=10.0.0.19

    RIP2=10.0.0.23

    

    VIP=10.0.0.11



    . /etc/rc.d/init.d/functions

    case "$1" in

        start)

            echo " start LVS of DirectorServer"



            # set the Virtual IP Address and sysctl parameter

            /sbin/ifconfig eth0:0 $VIP broadcast $VIP netmask 255.255.255.255 up

            /sbin/route add -host $VIP dev eth0:0

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



            #Clear IPVS table

            /sbin/ipvsadm -C

            

            #set LVS

            #Web Apache

             /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"

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

            /sbin/ipvsadm -C

            /sbin/ifconfig eth0:0 down

          ;;

        *)

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

            exit 1

    esac

    

 11.   chmod a+x /etc/init.d/lvsdr

    service lvsdr start|stop

12.查看结果

  ipvsadm -ln



13配置Realserver脚本

    vim /etc/init.d/realserver

    #!/bin/bash



    VIP=10.0.0.11



    . /etc/rc.d/init.d/functions

    case "$1" in

        start)

            echo " start LVS of REALServer"

            /sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up

            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)

            /sbin/ifconfig lo:0 down

            echo "close LVS Directorserver"

            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

    chmod a+x /etc/init.d/realserver

    service realserver start|stop

    

    能够通过ifconfig或者ip add 命令查看是否绑定

    



    备注:此脚本在两台realserver上均须运行。