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python - 写入时出现pymongo错误

转载 作者:太空狗 更新时间:2023-10-29 19:37:29 26 4
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我无法对远程 mongodb 数据库进行任何写入。我能够连接并进行查找(例如查找)。我这样连接:

conn = pymongo.MongoClient(db_uri,slaveOK=True)
db = conn.test_database
coll = db.test_collection

但是当我尝试插入时,

coll.insert({'a':1})

我遇到了一个错误:

---------------------------------------------------------------------------
AutoReconnect Traceback (most recent call last)
<ipython-input-56-d4ffb9e3fa79> in <module>()
----> 1 coll.insert({'a':1})

/usr/lib/python2.7/dist-packages/pymongo/collection.pyc in insert(self, doc_or_docs, manipulate, safe, check_keys, continue_on_error, **kwargs)
410 message._do_batched_insert(self.__full_name, gen(), check_keys,
411 safe, options, continue_on_error,
--> 412 self.uuid_subtype, client)
413
414 if return_one:

/usr/lib/python2.7/dist-packages/pymongo/mongo_client.pyc in _send_message(self, message, with_last_error, command, check_primary)
1126 except (ConnectionFailure, socket.error), e:
1127 self.disconnect()
-> 1128 raise AutoReconnect(str(e))
1129 except:
1130 sock_info.close()

AutoReconnect: not master

如果我删除 slaveOK=True(将其设置为默认值 False),我仍然可以连接,但读取(和写入)失败:

AutoReconnect                             Traceback (most recent call last)
<ipython-input-70-6671eea24f80> in <module>()
----> 1 coll.find_one()

/usr/lib/python2.7/dist-packages/pymongo/collection.pyc in find_one(self, spec_or_id, *args, **kwargs)
719 *args, **kwargs).max_time_ms(max_time_ms)
720
--> 721 for result in cursor.limit(-1):
722 return result
723 return None

/usr/lib/python2.7/dist-packages/pymongo/cursor.pyc in next(self)
1036 raise StopIteration
1037 db = self.__collection.database
-> 1038 if len(self.__data) or self._refresh():
1039 if self.__manipulate:
1040 return db._fix_outgoing(self.__data.popleft(),

/usr/lib/python2.7/dist-packages/pymongo/cursor.pyc in _refresh(self)
980 self.__skip, ntoreturn,
981 self.__query_spec(), self.__fields,
--> 982 self.__uuid_subtype))
983 if not self.__id:
984 self.__killed = True

/usr/lib/python2.7/dist-packages/pymongo/cursor.pyc in __send_message(self, message)
923 self.__tz_aware,
924 self.__uuid_subtype,
--> 925 self.__compile_re)
926 except CursorNotFound:
927 self.__killed = True

/usr/lib/python2.7/dist-packages/pymongo/helpers.pyc in _unpack_response(response, cursor_id, as_class, tz_aware, uuid_subtype, compile_re)
99 error_object = bson.BSON(response[20:]).decode()
100 if error_object["$err"].startswith("not master"):
--> 101 raise AutoReconnect(error_object["$err"])
102 elif error_object.get("code") == 50:
103 raise ExecutionTimeout(error_object.get("$err"),

AutoReconnect: not master and slaveOk=false

我连接不正确吗?有没有办法指定连接到主副本?

最佳答案

AutoReconnect: not master意味着您的操作失败,因为您尝试在其上发出命令的节点不是副本集的主节点,其中命令(例如,写操作)要求该节点是主节点。设置slaveOK=True只是使您能够从辅助节点读取,默认情况下您只能从主节点读取。

如果使用 replicaSet=<replica set name> 向构造函数提供副本集名称,MongoClient 会自动发现并连接到主节点。 .请参阅 Connecting to a Replica Set 中的“PyMongo docs” .

顺便说一句,slaveOK已弃用,替换为 ReadPreference .如果您想将主节点以外的节点作为目标,则可以在创建客户端或发出查询时指定 ReadPreference。

关于python - 写入时出现pymongo错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25861174/

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