Python 进程在 docker 内无法访问互联网

Question

Python 进程（不包括主进程）在 docker 内无法访问互联网。 我有一个类

BotManager

为每个 AsyncTelebot 启动一个新进程。它有方法：

    async def add_bot(self, api_key: str):
        if api_key not in self.bots:
            if await self._check_bot(api_key):
                bot = AsyncTeleBot(api_key)
                self.bots[api_key] = bot

                terminate_flag = multiprocessing.Event()
                self.terminate_flags[api_key] = terminate_flag

                process = multiprocessing.Process(target=self.bot_polling_process,
                                                  args=(api_key, terminate_flag),
                                                  daemon=True)
                self.processes[api_key] = process
                process.start()
            else:
                raise InvalidBotKeyException('Неверный API ключ для бота')
        else:
            raise BotAlreadyWorksException('Такой бот уже работает')

    @staticmethod
    def bot_polling_process(api_key, terminate_flag):
        bot = AsyncTeleBot(api_key)
        setup_handlers(bot)

        async def polling():
            while not terminate_flag.is_set():
                try:
                    await bot.infinity_polling(timeout=10, request_timeout=90, interval=0)
                except Exception as e:
                    print(f"Exception occurred: {e}")
                    continue

        asyncio.run(polling())

如果我在我的电脑上启动应用程序，它可以正常工作，但是当我尝试在我的服务器上启动它时，我会得到以下跟踪：

2024-07-29 17:17:32,856 (asyncio_helper.py:103 MainThread) ERROR - TeleBot: "Unknown error: RuntimeError"
backend     | 2024-07-29 17:17:32,857 (async_telebot.py:370 MainThread) ERROR - TeleBot: "Infinity polling exception: Request timeout. Request: method=get url=getMe params=<aiohttp.formdata.FormData object at 0x7fa295e432b0> files=None request_timeout=300"
backend     | 2024-07-29 17:17:32,859 (async_telebot.py:372 MainThread) ERROR - TeleBot: "Exception traceback:
backend     | Traceback (most recent call last):
backend     |   File "/usr/local/lib/python3.10/site-packages/telebot/async_telebot.py", line 366, in infinity_polling
backend     |     await self._process_polling(non_stop=True, timeout=timeout, request_timeout=request_timeout,
backend     |   File "/usr/local/lib/python3.10/site-packages/telebot/async_telebot.py", line 423, in _process_polling
backend     |     self._user = await self.get_me()
backend     |   File "/usr/local/lib/python3.10/site-packages/telebot/async_telebot.py", line 2579, in get_me
backend     |     result = await asyncio_helper.get_me(self.token)
backend     |   File "/usr/local/lib/python3.10/site-packages/telebot/asyncio_helper.py", line 154, in get_me
backend     |     return await _process_request(token, method_url)
backend     |   File "/usr/local/lib/python3.10/site-packages/telebot/asyncio_helper.py", line 105, in _process_request
backend     |     raise RequestTimeout("Request timeout. Request: method={0} url={1} params={2} files={3} request_timeout={4}".format(method, url, params, files, request_timeout, current_try))
backend     | telebot.asyncio_helper.RequestTimeout: Request timeout. Request: method=get url=getMe params=<aiohttp.formdata.FormData object at 0x7fa295e432b0> files=None request_timeout=300
backend     | "

我检查并意识到所有 python 进程（不包括主进程）都没有互联网连接

我的 Dockerfile

FROM python:3.10-slim

WORKDIR /app

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY . .

EXPOSE 8000

CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]

docker-compose 文件：

version: '3.8'

networks:
  dev:

services:
  mongo:
    image: mongo:latest
    container_name: mongo
    environment:
      - MONGO_INITDB_DATABASE=telegram_posts
    ports:
      - "27017:27017"
    volumes:
      - mongo-data:/data/db
    networks:
      - dev


  redis:
    image: redis:latest
    container_name: redis
    ports:
      - "6379:6379"
    networks:
      - dev


  backend:
    build:
      context: ./telePosting
      dockerfile: Dockerfile
    container_name: backend
    environment:
      - MONGO_URL=mongodb://mongo:27017
      - MONGO_DB_NAME=telegram_posts
      - REDIS_URL=redis
      - REDIS_PORT=6379
      - PYTHONUNBUFFERED=1
    ports:
      - "8000:8000"
    depends_on:
      - mongo
      - redis
    networks:
      - dev

  frontend:
    build:
      context: ./telePostFrontend/vite-project
      dockerfile: Dockerfile
    container_name: frontend
    ports:
      - "3000:80"
    depends_on:
      - backend
    networks:
      - dev

volumes:
  mongo-data:

我该如何解决这个问题？

我尝试 ping 一些站点，发现其他进程没有互联网连接

Answer 1

您已在 docker-compose 文件中创建了一个新网络

dev

并将其分配给所有容器。 它没有通往互联网的路由，因此这些容器只能相互通信。

如果您不熟悉 docker 网络，我建议不要创建新网络，而仅使用默认网络。 通过从 docker-compose 中删除所有

networks:

部分来完成此操作。 您可以在这里找到文档：https://docs.docker.com/compose/networking/

或者，如果您需要默认设置未提供的网络配置，则可以指定网络驱动程序：https://docs.docker.com/network/drivers/