I am trying to monitor my database hosted by MongoLab. The agent produces the following error:

2013-10-15 23:12:00,314 ERROR Problem collecting blocking data from: ds045978.mongolab.com:45978 - exception: Traceback (most recent call last):
File "/home/mms/mms-agent/blockingStats.py", line 59, in run
monitorConn = self.mmsAgent.getDbConnection( self.hostKey )
File "/home/mms/mms-agent/mmsAgent.py", line 107, in getDbConnection
return pymongo.Connection( hostDef['mongoUri'] , slave_okay=True, document_class=bson.son.SON )
File "/home/mms/venv/local/lib/python2.7/site-packages/pymongo/connection.py", line 222, in _init_
max_pool_size, document_class, tz_aware, _connect, **kwargs)
File "/home/mms/venv/local/lib/python2.7/site-packages/pymongo/mongo_client.py", line 369, in _init_
raise ConfigurationError(str(exc))
ConfigurationError: command SON([('authenticate', 1), ('user', u'mmsmonitor'), ('nonce', u'fd818334af2202d3'), ('key', u'a2a6aaa7fc289420134d57bd599e39a2')]) failed: auth fails

I believe I should define the database name somewhere on the MMS dashboard, because MongoLab does not list the available databases upon login with the CLI client of mongo.

This works:
mongo ds045978.mongolab.com:45978/ijustsawit -u mmsmonitor p

This is not:
mongo ds045978.mongolab.com:45978 -u mmsmonitor -p