Nginx代理、负载均衡

Nginx代理

#cd /usr/local/nginx/conf/vhost

#vim proxy.conf //加入以下内容

server
{    
listen 80;    
server_name ask.apelearn.com;                    //定义访问的目的域名

location /    
  {        
       proxy_pass      http://121.201.9.155/;            //目的域名的ip地址
       proxy_set_header Host   $host;        
       proxy_set_header X-Real-IP      $remote_addr;        
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;    
  }
}

#/usr/local/nginx/sbin/nginx -t                    //测试语法

#/usr/local/nginx/sbin/nginx -s reload          //从新加载

#curl ask.apelearn.com/robots.txt                 //索引列表，可以正常访问

#curl -x127.0.0.1:80 ask.apelearn.com/robots.txt         //本机去访问也能正常访问，说明代理成功

Nginx 负载均衡

咱们能够用代理qq.com来进行实验，咱们须要知道qq.com的域名解析的ip有哪些，能够借助dig工具，当没有dig命令时，须要安装bind-utils包

#yum install -y bind-utils

#dig qq.com

#vim /usr/local/nginx/conf/vhost/load.conf // 写入以下内容，它借助了一个模块upstream

upstream qq.com                          //upstream来指定多个web server
{   
       ip_hash;                  //为了让同一个用户始终保持在同一个机器上
       server 61.135.157.156:80;             //能够定义多个ip
       server 125.39.240.113:80;
}
server
{    
       listen 80;    
       server_name www.qq.com;                 //定义域名,不能写多个
       location /    
    {        
       proxy_pass      http://qq.com;        
       proxy_set_header Host   $host;        
       proxy_set_header X-Real-IP      $remote_addr;        
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;    
    }
}

#curl -x127.0.0.1:80 www.qq.com                   //测试，负载均衡功能正常