nginx配置反向代理，文件共享等

user www-data;
worker_processes auto;
pid /run/nginx.pid;

events {
        worker_connections 768;
        # multi_accept on;
}

http {

        ##
        # Basic Settings
        ##
        sendfile on;
        tcp_nopush on;
        tcp_nodelay on;
        keepalive_timeout 65;
        types_hash_max_size 2048;
        # server_tokens off;
        # server_names_hash_bucket_size 64;
        # server_name_in_redirect off;

        include /etc/nginx/mime.types;
        default_type application/octet-stream;

        ##
        # SSL Settings
        ##

        ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
        ssl_prefer_server_ciphers on;

        ##
        # Logging Settings
        ##

        access_log /var/log/nginx/access.log;
        error_log /var/log/nginx/error.log;

        ##
        # Gzip Settings
        ##

        gzip on;
        gzip_disable "msie6";
        gzip_vary on;
        gzip_static on;
        gzip_proxied any;
        gzip_comp_level 6;
        gzip_buffers 16 8k;
        gzip_http_version 1.1;
        gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

　　#upstream server的位置是server之外，http之内。
        upstream node-server {
                server 127.0.0.1:3000;
                }

      server {
          listen      5000;
          server_name  nginx-server;
          if ($http_user_agent ~* (MicroMessenger)) {
            rewrite ^/(.*) /filter_user_agent.html break;
          }

           location / {
           proxy_pass http://node-server;
           }

          location /taslyoa/AjaxHandler/EmployeeAndORG/EmployeeHandler.ashx {
                  proxy_pass http://k2web.tasly.com:8081;
          }

          location /files {
                  alias /usr/sharedfiles;
                  autoindex on;
                  autoindex_exact_size off;
                  autoindex_localtime on;
          }

       }
        ##
        # Virtual Host Configs
        ##
        include /etc/nginx/conf.d/*.conf;
        include /etc/nginx/sites-enabled/*;
}