在 Amazon EC2 上设置 nginx Web 服务器时遇到问题

d 我登录到我的 EC2 控制台创建了一个新实例并为其附加了一个 Elastice IP。然后我登录到服务器并安装了 Nginx：

$ sudo apt-get install nginx
$ sudo /etc/init.d/nginx start
$ Starting nginx: nginx.

当我导航到弹性 IP（或公共 DNS）时，我什么也得不到。默认设置应该足以显示默认的 Nginx 欢迎页面，对吗？我碰壁了，不知道下一步该怎么做。我们欢迎所有的建议？

我没有碰过它，但这是我的默认 nginx.conf：

user www-data;
worker_processes 4;
pid /var/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;

    ##
    # 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_proxied any;
    # gzip_comp_level 6;
    # gzip_buffers 16 8k;
    # gzip_http_version 1.1;
    # gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

    ##
    # nginx-naxsi config
    ##
    # Uncomment it if you installed nginx-naxsi
    ##

    #include /etc/nginx/naxsi_core.rules;

    ##
    # nginx-passenger config
    ##
    # Uncomment it if you installed nginx-passenger
    ##

    #passenger_root /usr;
    #passenger_ruby /usr/bin/ruby;

    ##
    # Virtual Host Configs
    ##

    include /etc/nginx/conf.d/*.conf;
    include /etc/nginx/sites-enabled/*;
}


#mail {
#   # See sample authentication script at:
#   # http://wiki.nginx.org/ImapAuthenticateWithApachePhpScript
# 
#   # auth_http localhost/auth.php;
#   # pop3_capabilities "TOP" "USER";
#   # imap_capabilities "IMAP4rev1" "UIDPLUS";
# 
#   server {
#       listen     localhost:110;
#       protocol   pop3;
#       proxy      on;
#   }
# 
#   server {
#       listen     localhost:143;
#       protocol   imap;
#       proxy      on;
#   }
#}

访问日志或错误日志中没有任何内容，我还确保 nginx 正在运行：

ps -ax | grep nginx
Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html
4305 ?        Ss     0:00 nginx: master process /usr/sbin/nginx
4306 ?        S      0:00 nginx: worker process
4307 ?        S      0:00 nginx: worker process
4308 ?        S      0:00 nginx: worker process
4309 ?        S      0:00 nginx: worker process