Nginx负载均衡实验(一台CentOS6.8 VM实现)

说明：一台VM CentOS 6.8 虚拟机Nginx实现负载均衡

安装Nginx服务请参考这篇nginx安装

Nginx.conf配置:
#user  nobody;
worker_processes  1;
#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;
#pid        logs/nginx.pid;
events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;
    #access_log  logs/access.log  main;
    sendfile        on;
    keepalive_timeout  65;
    upstream www.baidu.com {  
    server web1:81;  
    server web2:82;  
    }  
    server {
        listen       80;
        server_name  www.baidu.com;
        location / {
            proxy_pass  http://www.baidu.com;
        }
    }
     server {   #代理主机web1
        listen       81;
        server_name  web1;
        location / {
            root   web1;
            index  index.html index.htm;
        }
    }
     server { #代理主机web2
        listen      82;
        server_name web2;
        location / {
            root web2;
            index   index.html index.htm;
        }
    }
}

添加web1、web2站点

创建web1站点：
[nginx]#cd  /etc/nginx
[nginx]#mkdir web1
[nginx]#cd web1
[nginx]#echo "this is web1" > index.html

创建web2站点：
[nginx]#cd  /etc/nginx
[nginx]#mkdir web2
[nginx]#cd web2
[nginx]#echo "this is web2" > index.html

修改/etc/hosts配置文件

127.0.0.1   web1
127.0.0.1   web2
127.0.0.1   www.baidu.com

启动服务

[nginx]#/usr/sbin/nginx

测试脚本

#!/bin/bash
for i in `seq`
do
    curl -s http://www.baidu.com
done

测试结果：

[nginx]#chmod +x cycle.sh
[nginx]# ./cycle.sh 
this is web2
this is web1
this is web2
this is web1
this is web2