express – 将本地nginx服务器部署到公共ubuntu 16.04

我正在尝试将我的本地nginx服务器部署到公众. nginx服务器作为我的node express应用程序的反向代理运行,该应用程序也在端口3000上本地运行.因此我创建了一个符号链接来自/ etc / nginx / sites-available / express TO / etc / nginx / sites-enabled /表达,所以我的配置文件叫做express,看起来像这样.

在/ etc / nginx的/启用的站点 – /快递

upstream express_servers{
    server 127.0.0.1:3000;
}

server {

    listen 80;

        location / {
        proxy_pass http://express_servers;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
        }

}

我已从已启用站点的文件夹中删除了默认文件,但我没有更改我的nginx.conf文件,如下所示

/etc/nginx/nginx.conf

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_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;

    ##
    # 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;
#   }
#}

我还使用ufw(简单防火墙)更改了我的防火墙设置,以允许在http访问(尤其是nginx).我的ufw状态如下所示：

Status: active
Logging: on (low)
Default: deny (incoming),allow (outgoing),disabled (routed)
New profiles: skip

    To                         Action      From
--                         ------      ----
80/tcp (Nginx HTTP)        ALLOW IN    Anywhere                  
80                         ALLOW IN    Anywhere                  
80/tcp (Nginx HTTP (v6))   ALLOW IN    Anywhere (v6)             
80 (v6)                    ALLOW IN    Anywhere (v6) 

当我用wrk或loadtest(npm)运行负载测试时,一切似乎都运行正常.例如

wrk -t12 -c50 -d5s http://192.168.178.57/getCats/eng

所以本地我可以访问nginx服务器,但当我尝试使用我的手机(3G / 4G)从公共访问服务器时,我无法访问服务器.究竟我错过了什么？

编辑：我试图通过http://PUBLIC_IP_ADDR/getCats/eng访问该服务,而不是本地地址.