wdcp 504 gateway time out

# nginx conf conf/nginx.conf
# Created by http://www.wdlinux.cn
# Last Updated 2010.06.01
user  www www;
worker_processes  3;
error_log  logs/error.log  notice;
pid        logs/nginx.pid;
worker_rlimit_nofile 5120;
events {
    use epoll;
    worker_connections  5120;
}

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 22m;
    limit_conn_zone $binary_remote_addr zone=one:32k;

    sendfile        on;
    tcp_nopush     on;

    keepalive_timeout  60;
    tcp_nodelay on;


    #FastCGI相关参数是为了改善网站的性能：减少资源占用，提高访问速度。下面参数看字面意思都能理解。
    fastcgi_connect_timeout 300;
    fastcgi_send_timeout 300;
    fastcgi_read_timeout 300;
    fastcgi_buffer_size 128k;
    fastcgi_buffers 8 128k;
    fastcgi_busy_buffers_size 256k;
    fastcgi_temp_file_write_size 256k;
    fastcgi_intercept_errors on;


    gzip  on;
    gzip_min_length  1k;
    gzip_buffers     4 16k;
    gzip_http_version 1.0;
    gzip_comp_level 2;
    gzip_types       text/plain application/x-javascript text/css application/xml;
    gzip_vary on;

    log_format  wwwlogs  ‘$remote_addr - $remote_user [$time_local] $request $status $body_bytes_sent $http_referer $http_user_agent $http_x_forwarded_for‘;
    #include default.conf;
    include vhost/*.conf;
}