我正在 Ubuntu 18.02 机器上通过以下命令运行 Pytorch docker 容器：
# Run Pytorch container image
docker run -it -v /home/ubuntu/Downloads/docker_work/test_py_app/app:/workspace/app -p 8881:8888 -p 5002:5002 --gpus all --rm nvcr.io/nvidia/pytorch:20.08-py3
在同一台机器上，我运行着 MongoDB，它具有以下详细信息：
database_name = 'data_analytics'
collection_name = 'TestDB'
server = 'localhost'
mongodb_port = 27017
我在本地计算机的 docker 外部运行以下代码来测试代码，通过创建/更新现有集合，它工作得非常好：
import pandas as pd
import os
import json
import pymongo
from pymongo import MongoClient
import os
import glob
def dataframe_cleaner(csv_path):
df = pd.read_csv(csv_path)
df.columns = df.columns.str.replace('[#,@,&,.]', '')
df.columns = df.columns.str.replace(' ', '_')
df.columns = [x.lower() for x in df.columns]
return df
def mongo_loader(dataframe, db_name, collection_name, server, mongodb_port):
client = MongoClient(server, int(mongodb_port))
db = client[db_name]
# print(db)
records = json.loads(dataframe.T.to_json()).values()
db.TestDB.insert(records)
return True
csv_path = '/home/ubuntu/Downloads/test.csv'
database_name = 'data_analytics'
collection_name = 'TestDB'
server = 'localhost'
mongodb_port = 27017
df = dataframe_cleaner(csv_path)
criteria = mongo_loader(df, database_name, collection_name, server, mongodb_port)
根据建议here https://stackoverflow.com/questions/52314900/how-to-connect-local-mongo-database-to-docker/52318134，我已将 server = 'localhost' 更新为 server = 'host.docker.internal' 并在 docker 内运行相同的代码来读取 csv 文件并将数据推送到同一主机上 docker 外部的 MongoDB，但是无济于事，我仍然遇到同样的错误：
/opt/conda/lib/python3.6/site-packages/ipykernel_launcher.py:30: DeprecationWarning: insert is deprecated. Use insert_one or insert_many instead.
---------------------------------------------------------------------------
ServerSelectionTimeoutError Traceback (most recent call last)
<ipython-input-4-458f690221ff> in <module>
41
42 df = dataframe_cleaner(csv_path)
---> 43 criteria = mongo_loader(df, database_name, collection_name, server, mongodb_port)
44
45 #if criteria is True:
<ipython-input-4-458f690221ff> in mongo_loader(dataframe, db_name, collection_name, server, mongodb_port)
28
29 records = json.loads(dataframe.T.to_json()).values()
---> 30 db.TestDB.insert(records)
31 return True
32
/opt/conda/lib/python3.6/site-packages/pymongo/collection.py in insert(self, doc_or_docs, manipulate, check_keys, continue_on_error, **kwargs)
3292 write_concern = WriteConcern(**kwargs)
3293 return self._insert(doc_or_docs, not continue_on_error,
-> 3294 check_keys, manipulate, write_concern)
3295
3296 def update(self, spec, document, upsert=False, manipulate=False,
/opt/conda/lib/python3.6/site-packages/pymongo/collection.py in _insert(self, docs, ordered, check_keys, manipulate, write_concern, op_id, bypass_doc_val, session)
647 blk.ops = [(message._INSERT, doc) for doc in gen()]
648 try:
--> 649 blk.execute(write_concern, session=session)
650 except BulkWriteError as bwe:
651 _raise_last_error(bwe.details)
/opt/conda/lib/python3.6/site-packages/pymongo/bulk.py in execute(self, write_concern, session)
526 self.execute_no_results(sock_info, generator)
527 else:
--> 528 return self.execute_command(generator, write_concern, session)
529
530
/opt/conda/lib/python3.6/site-packages/pymongo/bulk.py in execute_command(self, generator, write_concern, session)
356
357 client = self.collection.database.client
--> 358 with client._tmp_session(session) as s:
359 client._retry_with_session(
360 self.is_retryable, retryable_bulk, s, self)
/opt/conda/lib/python3.6/contextlib.py in __enter__(self)
79 def __enter__(self):
80 try:
---> 81 return next(self.gen)
82 except StopIteration:
83 raise RuntimeError("generator didn't yield") from None
/opt/conda/lib/python3.6/site-packages/pymongo/mongo_client.py in _tmp_session(self, session, close)
1827 return
1828
-> 1829 s = self._ensure_session(session)
1830 if s:
1831 try:
/opt/conda/lib/python3.6/site-packages/pymongo/mongo_client.py in _ensure_session(self, session)
1814 # Don't make implicit sessions causally consistent. Applications
1815 # should always opt-in.
-> 1816 return self.__start_session(True, causal_consistency=False)
1817 except (ConfigurationError, InvalidOperation):
1818 # Sessions not supported, or multiple users authenticated.
/opt/conda/lib/python3.6/site-packages/pymongo/mongo_client.py in __start_session(self, implicit, **kwargs)
1764
1765 # Raises ConfigurationError if sessions are not supported.
-> 1766 server_session = self._get_server_session()
1767 opts = client_session.SessionOptions(**kwargs)
1768 return client_session.ClientSession(
/opt/conda/lib/python3.6/site-packages/pymongo/mongo_client.py in _get_server_session(self)
1800 def _get_server_session(self):
1801 """Internal: start or resume a _ServerSession."""
-> 1802 return self._topology.get_server_session()
1803
1804 def _return_server_session(self, server_session, lock):
/opt/conda/lib/python3.6/site-packages/pymongo/topology.py in get_server_session(self)
486 any_server_selector,
487 self._settings.server_selection_timeout,
--> 488 None)
489 elif not self._description.readable_servers:
490 self._select_servers_loop(
/opt/conda/lib/python3.6/site-packages/pymongo/topology.py in _select_servers_loop(self, selector, timeout, address)
215 raise ServerSelectionTimeoutError(
216 "%s, Timeout: %ss, Topology Description: %r" %
--> 217 (self._error_message(selector), timeout, self.description))
218
219 self._ensure_opened()
ServerSelectionTimeoutError: host.docker.internal:27017: [Errno -2] Name or service not known, Timeout: 30s, Topology Description: <TopologyDescription id: 601a3b8e6563d1163530d9c1, topology_type: Single, servers: [<ServerDescription ('host.docker.internal', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('host.docker.internal:27017: [Errno -2] Name or service not known',)>]>
请帮忙！
