nginx 反向代理负载均衡 tomcat集群应用

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sxlfxx 2014-03-21 11:21:38 博主文章分类：web技术

环境介绍：
系统：centos5.8_64
192.168.0.201：nginx服务器
192.168.0.202：tomcat服务器
192.168.0.203：tomcat服务器

1：安装Nginx不在详解
看这里http://www.yunwei8.com/nginx124/

2：配置nginx

# rm -rf /usr/local/server/nginx/conf/nginx.conf

# vi /usr/local/server/nginx/conf/nginx.conf

复制以下代码粘贴

user  www www;
worker_processes  8;
error_log  /web/logs/nginx_error.log  crit;
pid logs/nginx.pid;
events
{
    use epoll;
    worker_connections 65535;
}

http
{
   include mime.types;
   default_type application/octet-stream;
   server_names_hash_bucket_size 128;
   client_header_buffer_size 32k;
   large_client_header_buffers 4 32k;
   client_max_body_size 300m;
   sendfile on;
   tcp_nopush on;
   keepalive_timeout 65;
   tcp_nodelay on;
   client_body_buffer_size 128k;
   proxy_connect_timeout 600;
   proxy_read_timeout 600;
   proxy_send_timeout 600;
   proxy_buffer_size 16k;
   proxy_buffers 4 32k;
   proxy_busy_buffers_size 64k;
   proxy_temp_file_write_size 64k;
   gzip on;
   gzip_min_length 1k;
   gzip_http_version 1.1;
   gzip_buffers 4 16k;
   gzip_comp_level 2;
   gzip_types text/plain application/x-javascript text/css application/xml
   gzip_vary on;

   upstream tomcat_server
  {
    ip_hash;
      server 192.168.0.202:8080;
      server 192.168.0.203:8080;
  }

server
  {
      listen 80;
      server_name 192.168.1.201;

      location ~ \.(jsp|jspx|do)?$
      {
           proxy_next_upstream http_502 http_504 error timeout invalid_header;
           proxy_set_header Host 192.168.1.201;
           proxy_set_header X-Forwarded-For $remote_addr;
           proxy_pass http://tomcat_server;
      }

      location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$
      {
           expires 30d;
      }

      location ~ .*\.(js|css)?$
      {
          expires 1h;
      }

       access_log off;
   }
   }

3：测试和运行

# /usr/local/server/nginx/sbin/nginx -t

如果显示下面信息，即表示配置没问题

nginx: the configuration file /opt/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /opt/nginx/conf/nginx.conf test is successful

输入代码运行nginx服务

# /usr/local/server/nginx/sbin/nginx

查看nginx进程

# ps aux|grep [n]ginx

如果显以类似下面的信息，即表示nginx已经启动

root     22900  0.0  0.1  43216  1576 ?        Ss   08:23   0:00 nginx: master process /usr/local/server/nginx/sbin/nginx
www      23019  0.0  2.6  68816 27160 ?        S    08:48   0:00 nginx: worker process
www      23020  0.0  2.6  68816 26828 ?        S    08:48   0:00 nginx: worker process
www      23021  0.0  2.6  68816 26828 ?        S    08:48   0:00 nginx: worker process
www      23022  0.0  2.6  68816 26828 ?        S    08:48   0:00 nginx: worker process
www      23023  0.0  2.6  68816 26828 ?        S    08:48   0:00 nginx: worker process
www      23024  0.0  2.6  68816 26828 ?        S    08:48   0:00 nginx: worker process
www      23025  0.0  2.6  68816 26828 ?        S    08:48   0:00 nginx: worker process
www      23026  0.0  2.6  68816 26828 ?        S    08:48   0:00 nginx: worker process