负载均衡LVS之NAT模式IP包调度过程及实现的详细步骤

1、IP包调度过程 

2、实验环境、数据流程图

3、环境说明

1) 四台主机&＃xff0c;时间同步&＃xff0c;关闭防火墙和selinux2) 各主机角色1] 客户端&＃xff1a;192.168.110.27 仅主机&＃xff08;vmnet1&＃xff09; 网关:无2] RS服务器&＃xff1a;192.168.136.36 仅主机&＃xff08;vmnet6&＃xff09; 网关:192.168.136.35192.168.136.37 仅主机&＃xff08;vmnet6&＃xff09; 网关:192.168.136.353] VS服务器&＃xff1a;192.168.110.35 仅主机&＃xff08;vmnet1&＃xff09; 192.168.136.35 仅主机&＃xff08;vmnet6&＃xff09;

4、两台Real server服务器

1) yum -y install httpd2) echo Real server1 > /var/www/html/index.html #192.168.136.363) echo Real server2 > /var/www/html/index.html #192.168.136.374) systemctl start httpd5) 本机测试curl 192.168.136.36curl 192.168.136.37

5、VS服务器

1) yum -y install ipvsadm2) echo &＃39;net.ipv4.ip_forward&＃61;1&＃39; >> /etc/sysctl.conf3) sysctl -p4) RR算法1] ipvsadm -A -t 192.168.110.35:80 -s rr2] ipvsadm -Ln3] ipvsadm -a -t 192.168.110.35:80 -r 192.168.136.36 -m4] ipvsadm -a -t 192.168.110.35:80 -r 192.168.136.37 -m5] ipvsadm -Ln

6、客户端测试

while true; do curl 192.168.110.35;sleep 1;done