Nginx + SpringBoot set up load balancing

A tool

　　nginx-1.8.0

　　apache-tomcat-6.0.33

Second, the goal

　　High-performance load balancing Tomcat cluster:

Third, step

　　1, first download Nginx, to download the stable version: http: //nginx.org/en/download.html

　　2, then open two servers I use IDEA tool, or use even a tomcat configuration but very troublesome, open two different port number, write a page in a simple

　　3, and then modify these two Tomcat startup port, respectively, 8011 and 8022, the following first to modify the Tomcat, for example, under the open server.xml Tomcat conf directory:

　　4, and then start two IDEA, and access to, to see if normal :( It is recommended to use postmain development tools, use the browser because of the cache, the effect may not be evident, I climb out of the pit)

　　5, and then modify the above two different ports of the default page (in order to distinguish the following table that is accessible in the end, as can easily change it):

　　6, OK, now we can begin to configure Nginx to achieve load balancing, in fact, very simple, only needs to configure Nginx configuration file to:

　　Configuration is as follows (here only a simple configuration, the actual production environment can be more detailed sound configuration):

html] view plaincopy

 worker_processes  1;#工作进程的个数，一般与计算机的cpu核数一致  
  events {  
    worker_connections  1024;#单个进程最大连接数（最大连接数=连接数*进程数） 
 }  
 http {  

    include       mime.types; #文件扩展名与文件类型映射表  
     default_type  application/octet-stream;#默认文件类型  
   sendfile        on;#开启高效文件传输模式，sendfile指令指定nginx是否调用sendfile函数来输出文件，对于普通应用设为 on，如果用来进行下载等应用磁盘IO重负载应用，可设置为off，以平衡磁盘与网络I/O处理速度，降低系统的负载。注意：如果图片显示不正常把这个改成off。  
   keepalive_timeout  65; #长连接超时时间，单位是秒  
 gzip  on;#启用Gizp压缩  
    #服务器的集群  
    upstream  netitcast.com {  #服务器集群名字   
       server    127.0.0.1:18080  weight=1;#服务器配置   weight是权重的意思，权重越大，分配的概率越大。  
       server    127.0.0.1:28080  weight=2;  

    }     
    #当前的Nginx的配置  
    server {  
       listen       80;#监听80端口，可以改成其他端口  
        server_name  localhost;##############   当前服务的域名  
    location / {  

           proxy_pass http://netitcast.com;  

          proxy_redirect default;  

        }  
       error_page   500 502 503 504  /50x.html;  

        location = /50x.html {  
            root   html;  

      }  

   }  

}