Many “bad nonce received or getnonce not called” messages in mongo log.

[Roy]

Hi,

I found my mongo connection is auto-reset or failed sometimes, and
some useful message in my mongo log:

"auth: bad nonce received or getnonce not called. could be a driver
bug or a security attack. db:User"

With the help of "https://github.com/mongodb/mongo/blob/master/db/
security_commands.cpp", I got the information that the client sends
user_name, use_password, nonce to the server for the authentication,
and if the nonce sent by the client and distributed by the server are
different, the above message will be printed out.

Is there anything wrong with my mongo driver, or any other reasons?

[Nat]

Which driver do you use and what does your environment config looks like?

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[Roy]

pymongo.

mongo version 1.6.5
pymongo version 1.9

I use python to connect and manipulate the mongo data. There are many
mongo connections at the same time, and each connection needs
authentication for some database.

[Nat]

Can you see whether you can replicate the problem with pymongo 1.11?

-----Original Message-----
From: Roy <neverm...@gmail.com>

[Roy]

Otherwise than the problem with the pymongo, is there any other
possibility?

[Nat]

I don't think so. It hasn't been reported for a while already. It must have been a mix up in handling mongodb connection on the client side.

[Roy]

OK, I have updated my pymongo version, and supervise my mongo log.
Thanks a lot.

[Nat]

Do you still see the problem after upgrading?

-----Original Message-----
From: Roy <neverm...@gmail.com>
Sender: mongod...@googlegroups.com

Date: Mon, 11 Jul 2011 19:16:26
To: mongodb-user<mongod...@googlegroups.com>
Reply-To: mongod...@googlegroups.com
Subject: [mongodb-user] Re: Many “bad nonce received or get
nonce not called” messages in mongo log.