LVS DR模式负载均衡的搭建（单网段）

实验需要五台虚拟机,都是centos7

**客户端的配置**vim /etc/sysconfig/nerwork-scripts/ifcfg-ens33DEVICE=ens33NAME=ens33BOOTPROTO=staticIPADDR=172.22.144.188PREFIX=16ONBOOT=yesGATEWAY=172.22.144.17由于客户端IP与VIP不在一个网段，所以网关需要指向路由器

路由器的配置vim /etc/sysconfig/nerwork-scripts/ifcfg-ens33DEVICE=ens33NAME=ens33BOOTPROTO=staticIPADDR=172.22.144.17ONBOOT=yesPREFIX=16路由器配置1接口网卡 连接外网vim /etc/sysconfig/nerwork-scripts/ifcfg-ens37DEVICE=ens37IPADDR=192.168.49.5PREFIX=24路由器配置2接口网卡 连接内网vim /sysctl.confnet.ipv4.ip_forward=1在路由配置文件加入这一行sysctl -p启动路由转接服务

lvs的配置vim /etc/sysconfig/network-scripts/ifcfg-ens33DEVICE=ens33NAME=ens33BOOTPROTO=staticIPADDR=192.168.49.2PREFIX=24ONBOOT=yesGATEWAY=192.168.49.5将lvs的ip网关指向路由器2接口

rs服务器配置DEVICE=ens33NAME=ens33BOOTPROTO=staticIPADDR=192.168.49.3PREFIX=24ONBOOT=yesGATEWAY=192.168.49.5将rs服务1，2的网关全部指向路由器2接口

vs一键安装脚本vim lvs_dr_vs.sh #!/bin/bash#Author:wangxiaochun#Date:2017-08-13vip='192.168.49.100'iface='lo:1'mask='255.255.255.255'port='80'rs1='192.168.49.3'rs2='192.168.49.4'scheduler='wrr'type='-g'rpm -q ipvsadm &> /dev/null || yum -y install ipvsadm &> /dev/nullcase $1 instart)    ifconfig $iface $vip netmask $mask #broadcast $vip up    iptables -F    ipvsadm -A -t ${vip}:${port} -s $scheduler    ipvsadm -a -t ${vip}:${port} -r ${rs1} $type -w 1    ipvsadm -a -t ${vip}:${port} -r ${rs2} $type -w 1    echo "The VS Server is Ready!"    ;;stop)    ipvsadm -C    ifconfig $iface down    echo "The VS Server is Canceled!"    ;;*)    echo "Usage: $(basename $0) start|stop"    exit 1    ;;esac

rs1服务器一键安装脚本#!/bin/bash#Author:wangxiaochun#Date:2017-08-13vip=192.168.49.100mask='255.255.255.255'dev=lo:1rpm -q httpd &> /dev/null || yum -y install httpd &>/dev/nullservice httpd start &> /dev/null && echo "The httpd Server is Ready!"echo "
rs1
" > /var/www/html/index.htmlcase $1 instart)    echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore    echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore    echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce    echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce    ifconfig $dev $vip netmask $mask #broadcast $vip up    #route add -host $vip dev $dev    echo "The RS Server is Ready!"    ;;stop)    ifconfig $dev down    echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore    echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore    echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce    echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce    echo "The RS Server is Canceled!"    ;;*)    echo "Usage: $(basename $0) start|stop"    exit 1    ;;esac

rs2服务器一键安装脚本#!/bin/bash#Author:wangxiaochun#Date:2017-08-13vip=192.168.49.100mask='255.255.255.255'dev=lo:1rpm -q httpd &> /dev/null || yum -y install httpd &>/dev/nullservice httpd start &> /dev/null && echo "The httpd Server is Ready!"echo "
rs2
" > /var/www/html/index.htmlcase $1 instart)    echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore    echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore    echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce    echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce    ifconfig $dev $vip netmask $mask #broadcast $vip up    #route add -host $vip dev $dev    echo "The RS Server is Ready!"    ;;stop)    ifconfig $dev down    echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore    echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore    echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce    echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce    echo "The RS Server is Canceled!"    ;;*)    echo "Usage: $(basename $0) start|stop"    exit 1    ;;esac

bash lvs_dr_rs.sh start/stop这是这三个脚本的启动，停止的命令！

启动所有脚本后在 客户端测试！while true;do curl 192.168.49.100;sleep 0.5;done111lvyao111lvyao111lvyao111lvyao111lvyao.....DR模式负载均衡的搭建（单网段）大功告成！！！！！！！！！！！