使用Nginx进行TCP负载均衡

Ubuntu 16.04

1. 参考文档
   • http://www.linuxidc.com/Linux/2015-05/117654.htm
   • http://www.linuxidc.com/Linux/2016-08/134080.htm
   • http://nginx.org/en/docs/

2. 更新系统

   sudo apt-get update
   sudo apt-get upgrade

3. 安装Nginx的依赖包 zlib pcre openssl（可以源码安装也可以直接系统安装）

   sudo apt-get install libpcre3 libpcre3-dev zlib1g-dev libssl-dev build-essential
   sudo apt-get install openssl

1. 编译安装Nginx

   • http://nginx.org/download/nginx-1.10.3.tar.gz

     tar -zxvf nginx-1.10.3.tar.gz
     cd nginx-1.10.3
     sudo ./configure --prefix=/usr/local/nginx --with-openssl=/usr/include/openssl --with-stream
     sudo make && sudo make install

2. 修改conf/nginx.conf

   worker_processes auto;
   #error_log /var/log/nginx/error.log info;
   events {
       use epoll;
       worker_connections  1024;
   }
   stream {
       upstream backend {
           server 127.0.0.1:9990 weight=1;
           server 127.0.0.1:9991 weight=1;
       }
       server {
           listen 127.0.0.1:12345;
           proxy_connect_timeout 60s;
           proxy_timeout 60s;
           proxy_pass backend;
       }
   }

3. 运行Nginx

   cd /usr/local/nginx/sbin
   sudo ./nginx