从不同的 docker 主机访问在 docker 主机中运行的 api

Question

我有两个 docker 项目，每个项目都有自己的 docker-compose.yml 文件。 一个项目包含一个带有 docker 主机的 django api，而另一个项目是用于在另一台 docker 主机上运行的 open edx。 如果我尝试使用docker exec -it edx.devstack.studio curl http://localhost:8000/number/从第二个docker exec -it edx.devstack.studio curl http://localhost:8000/number/主机的docker exec -it edx.devstack.studio curl http://localhost:8000/number/容器之一访问我的 django api，我会收到错误curl: (7) Failed to connect to localhost port 8000: Connection refused 。 我绝不是码头专家，所以我可能做错了一些事情。 我尝试将两个项目中的所有 docker 服务添加到同一个网络，但仍然失败，可能是我做错了。 任何帮助都感激不尽。 下面是两个 docker compose 文件。 Django 项目 docker compose 文件

version: "3"

services:
  db:
    image: mysql:5.7
    container_name: db
    env_file:
      - .env
    ports:
      - '3307:3307'
    expose:
      - '3307'
    volumes:
      - my-db:/var/lib/mysql

  django:
    build:
      context: .
    container_name: web
    env_file:
    - .env
    command: python src/manage.py runserver 0.0.0.0:8000
    depends_on:
      - db
    ports:
      - "8000:8000"
    volumes:
      - .:/app
    networks:
      - okay

networks:
  okay:
    external: true

volumes:
  my-db:

打开 edx docker compose 文件

# This file contains all of the services for an edX installation. See https://docs.docker.com/compose/compose-file/
# for the appropriate syntax and definitions.
#
# Housekeeping Rules:
# - Group third-party and edX services separately
# - Alphabetize services in the groups
# - Alphabetize individual configuration options for each service
# - Every service's container name should be prefixed with "edx.devstack." to avoid conflicts with other containers
#   that might be running for the same service.

version: "2.1"

services:
  # Third-party services
  chrome:
    container_name: edx.devstack.chrome
    image: edxops/chrome:${OPENEDX_RELEASE:-latest}
    shm_size: 2g
    ports:
      - "15900:5900"
    volumes:  # for file uploads
      - ../edx-e2e-tests/upload_files:/edx/app/e2e/edx-e2e-tests/upload_files
      - ../edx-platform/common/test/data:/edx/app/edxapp/edx-platform/common/test/data
    networks:
      - okay

  elasticsearch:
    container_name: edx.devstack.elasticsearch
    image: edxops/elasticsearch:devstack
    # TODO: What to do about these forwarded ports? They'll conflict with ports forwarded by the Vagrant VM.
    # ports:
    #   - "9200:9200"
    #   - "9300:9300"
    volumes:
      - elasticsearch_data:/usr/share/elasticsearch/data
      - elasticsearch_data:/usr/share/elasticsearch/logs
    networks:
      - okay

  firefox:
    container_name: edx.devstack.firefox
    image: edxops/firefox:${OPENEDX_RELEASE:-latest}
    shm_size: 2g
    ports:
      - "25900:5900"
    volumes:  # for file uploads
      - ../edx-e2e-tests/upload_files:/edx/app/e2e/edx-e2e-tests/upload_files
      - ../edx-platform/common/test/data:/edx/app/edxapp/edx-platform/common/test/data
    networks:
      - okay

  memcached:
    container_name: edx.devstack.memcached
    image: memcached:1.4.24
    # ports:
    #   - "11211:11211"
    networks:
      - okay

  mongo:
    # We use WiredTiger in all environments. In development environments we use small files
    # to conserve disk space, and disable the journal for a minor performance gain.
    # See https://docs.mongodb.com/v3.0/reference/program/mongod/#options for complete details.
    command: mongod --smallfiles --nojournal --storageEngine wiredTiger
    container_name: edx.devstack.mongo
    image: mongo:3.2.16
    # ports:
    #  - "27017:27017"
    volumes:
      - mongo_data:/data/db
    networks:
      - okay

  mysql:
    command: mysqld --character-set-server=utf8 --collation-server=utf8_general_ci
    container_name: edx.devstack.mysql
    environment:
      MYSQL_ROOT_PASSWORD: ""
      MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
    image: mysql:5.6
    # ports:
    #   - "3306:3306"
    volumes:
      - mysql_data:/var/lib/mysql
    networks:
      - okay

  # edX services
  credentials:
    command: bash -c 'source /edx/app/credentials/credentials_env && while true; do python /edx/app/credentials/credentials/manage.py runserver 0.0.0.0:18150; sleep 2; done'
    container_name: edx.devstack.credentials
    depends_on:
      - mysql
      - memcached
    # Allows attachment to the credentials service using 'docker attach <containerID>'.
    stdin_open: true
    tty: true
    environment:
      CACHE_LOCATION: edx.devstack.memcached:12211
      DB_HOST: edx.devstack.mysql
      SOCIAL_AUTH_EDX_OIDC_URL_ROOT: http://edx.devstack.lms:18000/oauth2
      ENABLE_DJANGO_TOOLBAR: 1
    image: edxops/credentials:${OPENEDX_RELEASE:-latest}
    ports:
      - "18150:18150"
    networks:
      - okay

  discovery:
    command: bash -c 'source /edx/app/discovery/discovery_env && while true; do python /edx/app/discovery/discovery/manage.py runserver 0.0.0.0:18381; sleep 2; done'
    container_name: edx.devstack.discovery
    depends_on:
      - mysql
      - elasticsearch
      - memcached
    # Allows attachment to the discovery service using 'docker attach <containerID>'.
    stdin_open: true
    tty: true
    environment:
      TEST_ELASTICSEARCH_URL: "http://edx.devstack.elasticsearch:9200"
      ENABLE_DJANGO_TOOLBAR: 1
    image: edxops/discovery:${OPENEDX_RELEASE:-latest}
    ports:
      - "18381:18381"
    volumes:
      - discovery_assets:/edx/var/discovery/
    networks:
      - okay

  ecommerce:
    command: bash -c 'source /edx/app/ecommerce/ecommerce_env && while true; do python /edx/app/ecommerce/ecommerce/manage.py runserver 0.0.0.0:18130; sleep 2; done'
    container_name: edx.devstack.ecommerce
    depends_on:
      - mysql
      - memcached
    # Allows attachment to the ecommerce service using 'docker attach <containerID>'.
    stdin_open: true
    tty: true
    environment:
      ENABLE_DJANGO_TOOLBAR: 0
    image: edxops/ecommerce:${OPENEDX_RELEASE:-latest}
    ports:
      - "18130:18130"
    networks:
      - okay

  lms:
    command: bash -c 'source /edx/app/edxapp/edxapp_env && while true; do python /edx/app/edxapp/edx-platform/manage.py lms runserver 0.0.0.0:18000 --settings devstack_docker; sleep 2; done'
    container_name: edx.devstack.lms
    depends_on:
      - devpi
      - mysql
      - memcached
      - mongo
    # Allows attachment to the LMS service using 'docker attach <containerID>'.
    stdin_open: true
    tty: true
    environment:
      BOK_CHOY_HOSTNAME: edx.devstack.lms
      BOK_CHOY_LMS_PORT: 18003
      BOK_CHOY_CMS_PORT: 18031
      EDXAPP_TEST_MONGO_HOST: edx.devstack.mongo
      NO_PYTHON_UNINSTALL: 1
    image: edxops/edxapp:${OPENEDX_RELEASE:-latest}
    ports:
      - "18000:18000"
      - "19876:19876" # JS test debugging
      # - "18003:18003"
      # - "18031:18031"
    volumes:
      - edxapp_lms_assets:/edx/var/edxapp/staticfiles/
    networks:
      - okay

  edx_notes_api:
    command: bash -c 'source /edx/app/edx_notes_api/edx_notes_api_env && while true; do python /edx/app/edx_notes_api/edx_notes_api/manage.py runserver 0.0.0.0:18120 --settings notesserver.settings.devstack; sleep 2; done'
    container_name: edx.devstack.edx_notes_api
    depends_on:
      - devpi
      - elasticsearch
      - mysql
    image: edxops/notes:${OPENEDX_RELEASE:-latest}
    ports:
      - "18120:18120"
    environment:
      DB_ENGINE: "django.db.backends.mysql"
      DB_HOST: "edx.devstack.mysql"
      DB_NAME: "notes"
      DB_PASSWORD: "password"
      DB_PORT: "3306"
      DB_USER: "notes001"
      ENABLE_DJANGO_TOOLBAR: 1
      ELASTICSEARCH_URL: "http://edx.devstack.elasticsearch:9200"
    networks:
      - okay

  studio:
    command: bash -c 'source /edx/app/edxapp/edxapp_env && while true; do python /edx/app/edxapp/edx-platform/manage.py cms runserver 0.0.0.0:18010 --settings devstack_docker; sleep 2; done'
    container_name: edx.devstack.studio
    depends_on:
      - devpi
      - mysql
      - memcached
      - mongo
    # Allows attachment to the Studio service using 'docker attach <containerID>'.
    stdin_open: true
    tty: true
    environment:
      BOK_CHOY_HOSTNAME: edx.devstack.studio
      BOK_CHOY_LMS_PORT: 18103
      BOK_CHOY_CMS_PORT: 18131
      EDXAPP_TEST_MONGO_HOST: edx.devstack.mongo
      NO_PYTHON_UNINSTALL: 1
    image: edxops/edxapp:${OPENEDX_RELEASE:-latest}
    ports:
      - "18010:18010"
      - "19877:19877" # JS test debugging
      # - "18103:18103"
      # - "18131:18131"
    volumes:
      - edxapp_studio_assets:/edx/var/edxapp/staticfiles/
    networks:
      - okay

  forum:
    command: bash -c 'source /edx/app/forum/ruby_env && source /edx/app/forum/devstack_forum_env && cd /edx/app/forum/cs_comments_service && bundle install && while true; do ruby app.rb -o 0.0.0.0 ; sleep 2; done'
    container_name: edx.devstack.forum
    depends_on:
      - mongo
      - memcached
      - elasticsearch
    image: edxops/forum:${OPENEDX_RELEASE:-latest}
    ports:
      - "44567:4567"
    networks:
      - okay

  devpi:
    container_name: edx.devstack.devpi
    image: edxops/devpi:${OPENEDX_RELEASE:-latest}
    ports:
      - "3141:3141"
    volumes:
      - devpi_data:/data
    networks:
      - okay

networks:
  okay:
    external: true

volumes:
  discovery_assets:
  edxapp_lms_assets:
  edxapp_studio_assets:
  elasticsearch_data:
  mongo_data:
  mysql_data:
  devpi_data:

Answer 1

首先检查“db”容器并检查其网络，因为它没有明确加入“ok”网络。

Answer 2

感谢这个答案，我能够得到一个解决方案，你可以使用host.docker.internal来解析你的 IP 地址，而不是使用localhost来引用那个容器。 这将允许您向在不同容器上运行的 api 发出请求。 例如使用http://host.docker.internal:8000/number/而不是http://localhost:8000/number/ 。