NGINX 不与烧瓶休息 API 通信。码头工人答案

【问题标题】：NGINX Doesn't communicate with flask rest API. DockerNGINX 不与烧瓶休息 API 通信。码头工人
【发布时间】：2018-05-24 04:52:11
【问题描述】：

NGINX 不与烧瓶休息 API 通信。 当我点击 localhost/api 时 如果我点击本地主机，我会从 index.html 收到消息，但在点击 /api 时不会收到 json 响应

我想使用 NGINX 为我的 Angular 5 dist 文件夹提供服务。

什么是分布？

dist 是我运行 ng build --prod 后 Angular 5 为我创建的 index.html、main.css 和所有其他文件的文件夹

我的问题是什么？

我希望前端使用 Angular 5
我希望我的烧瓶成为我的休息 api
我希望 nginx 提供所有静态文件（HTML、CSS 和 javascript）

我希望用户输入 URL (http://localhost) NGINX 给他所有的静态文件，并让我的 SPA 应用程序为除 API 路由之外的 ROUTES 去站点

如果用户键入 (http://localhost/api)，我希望 FLASK 能够控制并给用户 JSON 响应，无论我说什么，flask 都会响应

我的问题是当用户点击 ## /api 我得到 404 page not found WTF 我在 nginx 中设置了 if 是 get /api 让烧瓶采取行动看：

user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
  worker_connections  1024;
}



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

  log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';

  access_log  /var/log/nginx/access.log  main;

  sendfile        on;
  #tcp_nopush     on;

  keepalive_timeout  65;

  gzip  on;

  include /etc/nginx/conf.d/*.conf;


  # Configuration for the server
  server {

    listen 80;
    server_name localhost;

    location / {
      root   /usr/share/nginx/html;
      index  index.html;
      expires -1;
      add_header Pragma "no-cache";
      add_header Cache-Control "no-store, no-cache, must-revalidate, post-check=0, pre-check=0";
      try_files $uri$args $uri$args/ $uri $uri/ /index.html =404;
      proxy_pass  http://localhost:5000/;
    }

    # location /api {
    #   proxy_pass          http://flask_api:5000;
    #   proxy_set_header        Host $host;
    # }

    }



}

我有一个看起来像这样的 docker-compose 文件：

docker-compose.yml

version: '3'

services:

  nginx_demo:
    image: nginx:1.13.7-alpine
    container_name: nginx
    restart: always
    build:
      context: .
      dockerfile: nginx/Dockerfile
    volumes:
     - ./Client/dist:/usr/share/nginx/html
    ports:
      - "80:80"
    depends_on:
      - flask_api

  flask_api:
    # image: flask
    container_name: flask_api
    restart: always
    build: ./Server
    volumes:
      - ./Server:/usr/src/app
    ports:
      - "5000:80"

这是在 Server/api.py 里面

''' Docker + python 3.6.3 '''

from flask import Flask

app = Flask(__name__)

@app.route('/api')
def hello():
    return 'Hello Form Flask'

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

这是我运行 docker-compose up 后的日志

Creating flask_api ...
Creating flask_api ... done
Creating nginx ...
Creating nginx ... done
Attaching to flask_api, nginx
flask_api     |  * Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
flask_api     |  * Restarting with stat
flask_api     |  * Debugger is active!
flask_api     |  * Debugger PIN: 718-970-762
nginx         | 172.20.0.1 - - [10/Dec/2017:14:16:53 +0000] "GET / HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36" "-"
nginx         | 172.20.0.1 - - [10/Dec/2017:14:16:55 +0000] "GET / HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36" "-"
nginx         | 172.20.0.1 - - [10/Dec/2017:14:16:56 +0000] "GET / HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36" "-"
nginx         | 2017/12/10 14:16:59 [error] 5#5: *2 open() "/usr/share/nginx/html/api" failed (2: No such file or directory), client: 172.20.0.1, server: localhost, request: "GET /api HTTP/1.1", host: "localhost"
nginx         | 172.20.0.1 - - [10/Dec/2017:14:16:59 +0000] "GET /api HTTP/1.1" 404 571 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36" "-"
nginx         | 172.20.0.1 - - [10/Dec/2017:14:17:01 +0000] "GET /api HTTP/1.1" 404 571 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36" "-"
nginx         | 2017/12/10 14:17:01 [error] 5#5: *2 open() "/usr/share/nginx/html/api" failed (2: No such file or directory), client: 172.20.0.1, server: localhost, request: "GET /api HTTP/1.1", host: "localhost"
nginx         | 2017/12/10 14:17:02 [error] 5#5: *2 open() "/usr/share/nginx/html/api" failed (2: No such file or directory), client: 172.20.0.1, server: localhost, request: "GET /api HTTP/1.1", host: "localhost"
nginx         | 172.20.0.1 - - [10/Dec/2017:14:17:02 +0000] "GET /api HTTP/1.1" 404 571 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36" "-"

【问题讨论】：

在docker-compose.yml 中，您发布了错误的端口。还可以考虑使用links 指定 nginx 的主机。看看这里：docs.docker.com/compose/compose-file/#links
谢谢@Ehsan 在 docker 文档中他们没有提及 NGINX 和 Flask .only Flask 和 REDIS。我应该使用什么端口
您已将两个容器的端口映射到主机上的 80。将flask_api 的发布端口更改为"5000:5000"，因为这是 nginx 期望连接的地方。
另外 proxy_pass http://localhost:5000/; 在 nginx 配置中是错误的，因为它指的是 nginx 容器本身。您应该在 docker-compose 文件中的nginx_demo 的links 部分中指定flask_api，然后您可以使用flask_api 引用flask 应用程序的地址。
不工作我要发布我所有的代码你能看看我的问题是什么请给我 5 分钟

标签： python angular docker nginx flask

【解决方案1】：

这应该可行：

docker-compose.yml

# Run docker-compose up

version: '3'

services:
  nginx_demo:
    image: nginx:1.13.7-alpine
    container_name: nginx
    restart: always
    build:
      context: .
      dockerfile: ./Nginx/Dockerfile
    volumes:
      - ./Client/dist:/usr/share/nginx/html
    ports:
      - "80:80"
    depends_on:
      - flask_api
    links:
      - flask_api

  flask_api:
    container_name: flask_api
    restart: always
    build:
      context: .
      dockerfile: ./Server/Dockerfile
    volumes:
      - ./Server:/usr/src/app

Nginx/Dockerfile

FROM nginx:1.13.7-alpine

# remove the old nginx.conf
RUN rm /etc/nginx/nginx.conf

# Copy custom nginx config
COPY ./Nginx/nginx.conf /etc/nginx/nginx.conf
COPY ./Client/dist /usr/share/nginx/html

EXPOSE 80

服务器/Dockerfile

FROM python:3.6-alpine

ADD ./Server /app
WORKDIR /app
RUN pip install -r requirements.txt

EXPOSE 5000
CMD ["python", "api.py"]

Nginx/nginx.conf

user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
  worker_connections  1024;
}


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

  log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';

  access_log  /var/log/nginx/access.log  main;

  sendfile    on;

  keepalive_timeout  65;

  gzip  on;

  # Configuration for the server
  server {

    listen 80;

    location /api {
      proxy_pass http://flask_api:5000;
    }

    location / {
      root   /usr/share/nginx/html;
      index  index.html;
      expires -1;
      add_header Pragma "no-cache";
      add_header Cache-Control "no-store, no-cache, must-revalidate, post-check=0, pre-check=0";
      try_files $uri$args $uri$args/ $uri $uri/ =404;
    }

  }

}

【讨论】：

完美运行:)
先生，有没有文章指导您使用Python Flask正确使用Nginx和docker？