Gunicorn 和 Nginx 配置设置

Question

我正在做一些 X-Ray 图像分类任务。但是，我在设置 nginx 和 gunicorn 配置时遇到了麻烦。我有一台 paperspace P4000 机器，我想让 webapp 运行在上面。

我必须承认，我对设置 nginx 和 gunicorn 服务器还很陌生。

我的hello.py文件：

from flask import Flask

app = Flask(__name__)

@app.route('/')
def index():
    return 'Hello There!!!'

if __name__ == "__main__":
    app.run(host="0.0.0.0")

我的/etc/nginx/sites-available/flask-settings是 ：

    server  {
             location / {
                   proxy_pass http://127.0.0.1:8000;
                   proxy_set_header Host $host;
                   proxy_set_header X-Real-IP $remote_addr; 
    }

}

我在 run.py 中使用它app.run(host=‘0.0.0.0’)。现在，它只是一个简单的 hello world 文件，但我希望首先正确设置服务器，因为 DL 模型和代码已经完成。

输出gunicorn hello:app -b 0.0.0.0:8000：

   [2257] [INFO] Starting gunicorn 19.9.0
   [2257] [INFO] Listening at: http://0.0.0.0:8000 (2257)
   [2257] [INFO] Using worker: sync
   [INFO] Booting worker with pid: 2260

我的/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;
#   }
#}

paperspace 机器的 ip 是 184.105.5.164 。但是每当我尝试访问它时，一段时间后它就会超时。

期待建议。

更新：我必须打开端口sudo ufw allow [PORT]。成功了。感谢@womble