mongodb - 自动重新连接 : No replica set members available for query with ReadPreference PRIMARY_PREFERRED

Question

问题 处理此类错误的最佳方法是什么？说完后重试，最多 30 秒。 5 次？

设置我在 AWS ECS 上有一个 PRIMARY + 两个 SECONDARY 设置，没有一个盒子被关闭。

从异常消息来看，Mongo 似乎在说“我没有 PRIMARY，我试图从 SECONDARY 获取数据，但它们也已关闭”。但是，没有一个 Mongo 服务器出现故障。我有另一个正在运行的进程，它的默认 read_preference 为 SECONDARY，并且一直运行良好。

异常

is_auth = db.authenticate("myid","mypass")
 File "/usr/local/lib/python2.7/dist-packages/pymongo/database.py", line
720, in authenticate
   read_preference=read_pref)["nonce"]
 File "/usr/local/lib/python2.7/dist-packages/pymongo/database.py", line
390, in command
   result = self["$cmd"].find_one(command, **extra_opts)
 File "/usr/local/lib/python2.7/dist-packages/pymongo/collection.py",
line 598, in find_one
   for result in self.find(spec_or_id, *args, **kwargs).limit(-1):
 File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line
814, in next
   if len(self.__data) or self._refresh():
 File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line
763, in _refresh
   self.__uuid_subtype))
 File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line
700, in __send_message
   **kwargs)
 File 
"/usr/local/lib/python2.7/dist-packages/pymongo/mongo_replica_set_client.py
", line 1210, in _send_message_with_response
   raise AutoReconnect(msg, errors)


AutoReconnect: No replica set members available for query with
ReadPreference PRIMARY_PREFERRED

代码

connection = MongoReplicaSetClient(, replicaSet='myReplica-2', use_greenlets = True) 
db = "my_real_db"
db.read_preference = ReadPreference.PRIMARY
is_auth = db.authenticate("myid", "mypass") # ERROR at this line

版本MongoDB:2.2.0 和 PyMongo:2.4.2

Answer 1

我会仔细检查您的副本集配置。在您的副本集成员之一上运行 rs.status() 并确保每个成员的“名称”字段实际上是正确的并且从您的应用程序运行的机器上解析。