python - 将MongoDB与Docker组合使用，无法从本地数据库认证和下载数据

Question

我试图在Windows powershell(Docker Desktop)中将MongoDB与Docker结合使用，并使用以下docker-compose.yml:

version: '3.7'
services: 
   mongodb_container:
        image: mongo:latest
        container_name: mongodb
        environment:
            - MONGO_INITDB_ROOT_USERNAME=root
            - MONGO_INITDB_ROOT_PASSWORD=root
            - MONGO_INITDB_DATABASE=test
        ports:
            - 27017:27017
        volumes:
            - mongodb_data_container:/data/db 

volumes:
     mongodb_data_container: 

当我尝试使用docker-compose up -d --build，docker exec -it <container_id> /bin/bash和mongo -u root -p root --authenticationDatabase test对数据库进行身份验证时，它在日志中产生以下错误:

MongoDB shell version v4.2.6
connecting to: mongodb://127.0.0.1:27017/?authSource=test&compressors=disabled&gssapiServiceName=mongodb
2020-04-23T14:22:56.890+0000 E  QUERY    [js] Error: Authentication failed. :
connect@src/mongo/shell/mongo.js:341:17
@(connect):2:6
2020-04-23T14:22:56.893+0000 F  -        [main] exception: connect failed
2020-04-23T14:22:56.894+0000 E  -        [main] exiting with code 1

当我尝试从由docker-compose设置气流设置的本地数据库中下载数据时，产生了以下日志错误:

[2020-04-23 14:30:15,763] {taskinstance.py:1128} ERROR - 127.0.0.1:27017: [Errno 111] Connection refused
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/airflow/models/taskinstance.py", line 966, in _run_raw_task
    result = task_copy.execute(context=context)
  File "/usr/local/lib/python3.5/dist-packages/airflow/operators/python_operator.py", line 113, in execute
    return_value = self.execute_callable()
  File "/usr/local/lib/python3.5/dist-packages/airflow/operators/python_operator.py", line 118, in execute_callable
    return self.python_callable(*self.op_args, **self.op_kwargs)
  File "/usr/local/airflow/dags/missing_title.py", line 32, in download_db
    df =  pd.DataFrame(list(collection3.find())).drop(['_id'], axis=1)
  File "/usr/local/lib/python3.5/dist-packages/pymongo/cursor.py", line 1156, in next
    if len(self.__data) or self._refresh():
  File "/usr/local/lib/python3.5/dist-packages/pymongo/cursor.py", line 1050, in _refresh
    self.__session = self.__collection.database.client._ensure_session()
  File "/usr/local/lib/python3.5/dist-packages/pymongo/mongo_client.py", line 1810, in _ensure_session
    return self.__start_session(True, causal_consistency=False)
  File "/usr/local/lib/python3.5/dist-packages/pymongo/mongo_client.py", line 1763, in __start_session
    server_session = self._get_server_session()
  File "/usr/local/lib/python3.5/dist-packages/pymongo/mongo_client.py", line 1796, in _get_server_session
    return self._topology.get_server_session()
  File "/usr/local/lib/python3.5/dist-packages/pymongo/topology.py", line 485, in get_server_session
    None)
  File "/usr/local/lib/python3.5/dist-packages/pymongo/topology.py", line 209, in _select_servers_loop
    self._error_message(selector))
pymongo.errors.ServerSelectionTimeoutError: 127.0.0.1:27017: [Errno 111] Connection refused

如何使用docker-compose访问MongoDB数据库？ (当我尝试在docker外部使用pymongo和Jupiter Notebook从MongoDB数据库本地下载数据时，我可以)

Answer 1

删除行:

- MONGO_INITDB_DATABASE=test

从docker compose文件中，然后将身份验证数据库设置为admin(默认值)

mongo -u root -p root --authenticationDatabase admin

那将解决第一个问题。

对于第二个问题，将连接配置为使用容器名称，例如mongodb:27017而不是127.0.0.1:27017