mongoengine using Authentication Database

Question

I am not sure how to connect to a mongodb database that uses an authentication database with mongoengine.

On the command prompt I need to do mongo hostname:27017/myApp -u "test" -p "test" --authenticationDatabase admin, but I don't see where I'd pass this as an argument to mongoengine so I use the admin database for auth but connect to the myApp database for my models?

I believe this is where it's explained in the PyMongo guide:

https://api.mongodb.com/python/current/examples/authentication.html

>>> from pymongo import MongoClient
>>> client = MongoClient('example.com')
>>> db = client.the_database
>>> db.authenticate('user', 'password', source='source_database')

and I found the pull request that added this to mongoengine:

https://github.com/MongoEngine/mongoengine/pull/590/files

It looks like you just add authentication_source as an argument to connect like connect(authentication_source='admin'). It'd be nice if it was better documented.

http://docs.mongoengine.org/apireference.html?highlight=authentication_source

Answer 1

According to the mongoengine connecting guide, the connect() method support URI style connections. i.e.

connect(
   'project1'
   host='mongodb://username:password@host1:port1/databaseName'
)

In that sense, you can also specify the authentication source database as below:

"mongodb://username:password@host1:port1/database?authSource=source_database"

See also MongoDB connection string URI for more MongoDB URI examples. Also Authentication options through connection string

Answer 2

The API has been updated, so this is the right way to do it now:

connect('mydb',
        host="localhost",
        username="admin",
        password="secret",
        authentication_source='your_auth_db')