nginx.conf 配置文件详解

简单的实现nginx在前端做反向代理服务器的例子，处理js、png等静态文件，jsp等动态请求转发到其它服务器tomcat：

user  www www;
worker_processes  ;
error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;
pid        logs/nginx.pid;
events {
    use epoll;
    worker_connections  ;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';
    #access_log  logs/access.log  main;
    sendfile        on;
    # tcp_nopush     on;
    keepalive_timeout  ;
  # gzip压缩功能设置
    gzip on;
    gzip_min_length 1k;
    gzip_buffers     16k;
    gzip_http_version 1.0;
    gzip_comp_level ;
    gzip_types text/html text/plain text/css text/javascript application/json application/javascript application/x-javascript application/xml;
    gzip_vary on;

  # http_proxy 设置
    client_max_body_size   10m;
    client_body_buffer_size   128k;
    proxy_connect_timeout   ;
    proxy_send_timeout   ;
    proxy_read_timeout   ;
    proxy_buffer_size   4k;
    proxy_buffers    32k;
    proxy_busy_buffers_size   64k;
    proxy_temp_file_write_size  64k;
    proxy_temp_path   /usr/local/nginx/proxy_temp  ;
  # 设定负载均衡后台服务器列表
    upstream  backend  {
              #ip_hash;
              server   192.168.10.100: max_fails= fail_timeout=30s ;
              server   192.168.10.101: max_fails= fail_timeout=30s ;
    }
  # 很重要的虚拟主机配置
    server {
        listen       ;
        server_name  itoatest.example.com;
        root   /apps/oaapp;
        charset utf-;
        access_log  logs/host.access.log  main;
        #对 / 所有做负载均衡+反向代理
        location / {
            root   /apps/oaapp;
            index  index.jsp index.html index.htm;
            proxy_pass        http://backend;
            proxy_redirect off;
            # 后端的Web服务器可以通过X-Forwarded-For获取用户真实IP
            proxy_set_header  Host  $host;
            proxy_set_header  X-Real-IP  $remote_addr;
            proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
            proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;

        }
        #静态文件，nginx自己处理，不去backend请求tomcat
        location  ~* /download/ {
            root /apps/oa/fs;  

        }
        location ~ .*\.(gif|jpg|jpeg|bmp|png|ico|txt|js|css)$
        {
            root /apps/oaapp;
            expires      7d;
        }
           location /nginx_status {
            stub_status on;
            access_log off;
            allow 192.168.10.0/;
            deny all;
        }
        location ~ ^/(WEB-INF)/ {
            deny all;
        }
        #error_page                /.html;
        # redirect server error pages to the static page /50x.html
        #
        error_page        /50x.html;
        location = /50x.html {
            root   html;
        }
    }
  ## 其它虚拟主机，server 指令开始
}