MongoError: Authentication failed

I have mongodb in mongolab. If I connect to it by command

mongo uri/$db -u user -p pass

it is ok. If I use mongoose and connect by

mongoose.connect('mongodb://${user}:${pass}@${uri}/${db}')

I have error

MongoError: Authentication failed

I use mongoose 4.6.1

[vkarpov15]

Hmm also what database is the user defined on? MongoDB users are scoped to dbs, even if they have cross-db privileges, so if the user you have isn’t defined on db you’ll need to put something like mongoose.connect('mongodb://${user}:${pass}@${uri}/${db}?authSource=admin') if the user is defined on the ‘admin’ db.

Also, if you’re on mongodb 3.x, you might be using SCRAM-SHA-1 auth or not. Try both of the below:

• mongoose.connect('mongodb://${user}:${pass}@${uri}/${db}?authMechanism=SCRAM-SHA-1')
• mongoose.connect('mongodb://${user}:${pass}@${uri}/${db}?authMechanism=MONGODB-CR')

[alikarimii]

just add ?authSource=yourDB&w=1 to end of db url

mongoose.connect('mongodb://user:password@host/yourDB?authSource=yourDB&w=1') this work for me . &w=1 is important