LVS DR模式负载均衡的搭建（单网段）

曾经终败给现在 2022-10-01 14:56 130阅读 0赞

# 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**

<table> 
 <thead> 
  <tr> 
   <th>客户端</th> 
   <th>路由器</th> 
   <th>lvs服务器</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>172.22.144.188</td> 
   <td>1接口172.22.144.17 2接口192.168.49.5</td> 
   <td>172.22.144.17 192.168.49.5</td> 
  </tr> 
 </tbody> 
</table>

**客户端的配置**
    vim /etc/sysconfig/nerwork-scripts/ifcfg-ens33
    DEVICE=ens33
    NAME=ens33
    BOOTPROTO=static
    IPADDR=172.22.144.188
    PREFIX=16
    ONBOOT=yes
    GATEWAY=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-ens33
    DEVICE=ens33
    NAME=ens33
    BOOTPROTO=static
    IPADDR=172.22.144.17
    ONBOOT=yes
    PREFIX=16
    路由器配置1接口网卡 连接外网
    
    vim /etc/sysconfig/nerwork-scripts/ifcfg-ens37
    DEVICE=ens37
    IPADDR=192.168.49.5
    PREFIX=24
    路由器配置2接口网卡 连接内网
    
    vim /sysctl.conf
    net.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-ens33
    DEVICE=ens33
    NAME=ens33
    BOOTPROTO=static
    IPADDR=192.168.49.2
    PREFIX=24
    ONBOOT=yes
    GATEWAY=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=ens33
    NAME=ens33
    BOOTPROTO=static
    IPADDR=192.168.49.3
    PREFIX=24
    ONBOOT=yes
    GATEWAY=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:2017-08-13
    vip='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/null
    
    case $1 in
    start)
        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:2017-08-13
    vip=192.168.49.100
    mask='255.255.255.255'
    dev=lo:1
    rpm -q httpd &> /dev/null || yum -y install httpd &>/dev/null
    service httpd start &> /dev/null && echo "The httpd Server is Ready!"
    echo "<h1>rs1</h1>" > /var/www/html/index.html
    
    case $1 in
    start)
        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:2017-08-13
    vip=192.168.49.100
    mask='255.255.255.255'
    dev=lo:1
    rpm -q httpd &> /dev/null || yum -y install httpd &>/dev/null
    service httpd start &> /dev/null && echo "The httpd Server is Ready!"
    echo "<h1>rs2</h1>" > /var/www/html/index.html
    
    case $1 in
    start)
        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;done
    111
    lvyao
    111
    lvyao
    111
    lvyao
    111
    lvyao
    111
    lvyao
    .....
    DR模式负载均衡的搭建（单网段）大功告成！！！！！！！！！！！

转载于:https://blog.51cto.com/14234525/2399850