Question

我的问题是我当前无法登录到在docker上运行的Web ap。我的docker-compose包括我的rails应用程序，一个mysql数据库，一个宁静的api和一个反向代理（最近有人帮我解决了这个问题！）。当前一切运行正常（或者至少我认为是这样），我什至可以通过转到localhost / api来测试我的api端点（然后我会看到api的文档）。

问题是，当我登录时，它通过了宁静的api，但出现如下错误：

Failed to open TCP connection to localhost:12345 (Cannot assign requested address - connect(2) for "localhost" port 12345)

我试图在docker-compose中公开端口，但是没有用。这是重要的文件：

docker-compose.yml

version: '3.5'
services:
  app:
    image: 'test/testapp:first-test'
    depends_on:
      - db
    environment:
      DB_USER: root
      DB_NAME: test_dev
      DB_PASSWORD: root
      DB_HOST: db
      DB_PORT: 3306
      RAILS_ENV: development
    ports:
      - "3000:3000"
    volumes:
      - .:/test_app
    networks:
      test-network:
        aliases:
          - app

  api:
    depends_on:
      - db
    image: 'test/testapi:first-test'
    ports:
      - "12345:12345"
    expose:
      - "12345"
    volumes:
      - .:/test_api
    networks:
      test-network:
        aliases:
          - api  

  reverse-proxy:
    depends_on:
      - app
      - api
    image: nginx:alpine
    volumes: 
      - $PWD/default.conf:/etc/nginx/conf.d/default.conf
    networks:
      test-network:
        aliases:
          - reverse-proxy
    ports:
      - 80:80
      - 443:443

  db:
    image: mysql:latest
    restart: always
    command: --default-authentication-plugin=mysql_native_password
    environment:
      MYSQL_ROOT_PASSWORD: root
      MYSQL_DATABASE: test_dev
      MYSQL_USERNAME: root
      MYSQL_PASSWORD: root
    ports:
      - '3306:3306'
    volumes:
      - .:/test_db
    networks:
      test-network:
        aliases:
          - mysql-db
        
networks:
  test-network:

nginx conf

# This is a default site configuration which will simply return 404, preventing
# chance access to any other virtualhost.

server {
    listen 80 default_server;
    listen [::]:80 default_server;

    # Frontend
    location / {
        proxy_set_header X-Real-IP  $remote_addr;
        proxy_set_header X-Forwarded-For $remote_addr;
        proxy_set_header Host $host;
        proxy_pass http://hubsite:3000; # same name as network alias
    }

    # Backend
    location /api {
        proxy_set_header X-Real-IP  $remote_addr;
        proxy_set_header X-Forwarded-For $remote_addr;
        proxy_set_header Host $host;
        proxy_pass http://hubapi:12345/;  # <--- note this has an extra /
    }

    # location = /404.html {
    #     internal;
    # }
}

现在这非常“ alpha”，我可以肯定我的卷都错了，我应该完全“链接”我的服务。

如果有人对此有任何信息，我将非常感谢！谢谢！

Docker：无法打开与本地主机的TCP连接：12345

0 个答案: