Unable to connect mongoDB using nestjs/mongoose

Question

I have a nest.js node server and I am trying to connect mongoDB data base in the app.module, when the connection string doesn't contains the DB name - the connection to default DB "test" success, but when I specify the DB name- always getting "Authentication failed" error.

app.module.ts:

This works:

  imports: [
    MongooseModule.forRoot('mongodb://admin:admin@localhost:30000'),
  ]

But this specifying the DB name failed with Authentication error:

  imports: [
    MongooseModule.forRoot('mongodb://admin:admin@localhost:30000/test'),
  ]

or:

  imports: [
    MongooseModule.forRoot('mongodb://admin:admin@localhost:30000/data'),
  ]

Using MongoClient directly (without nestjs) connecting successfully:

const client = new MongoClient('mongodb://admin:admin@localhost:30000');
await client.connect();
db = client.db('data');

Any idea what is my problem and what should I do in order to solve this problem?

Thanks.

Have a look at https://stackoverflow.com/questions/63754742/authentication-failure-while-trying-to-save-to-mongodb/63755470#63755470 — Wernfried Domscheit, Nov 04 '20 at 11:03

score 10 · Accepted Answer · answered Dec 27 '20 at 07:30

10

Specify the DB name as a connection option - not as a part of the connection string solved the problem:

imports: [
    MongooseModule.forRoot({
       uri: 'mongodb://admin:admin@localhost:30000',
       dbName: 'data'
    }),
  ]

answered Dec 27 '20 at 07:30

user2436448

335
6
17

score 5 · Answer 2 · answered Jun 15 '21 at 20:49

This actually is not supported on newest version of @nestjs/mongoose, for instance in version ^7.2.4 it receives an string as first parameter and an object as second parameter, so what worked for me was:

   imports: [
      MongooseModule.forRoot(
      'mongodb://user:password@localhost:27017/nestjs-tutorial?authSource=admin&readPreference=primary',
    ),
    customModule,
   ],

score 4 · Answer 3 · answered Nov 25 '21 at 09:01

according to NestJS official document, forRoot() method accepts the same configuration object as mongoose.connect() from the Mongoose package.

you may define the db name in this way:

imports: [
  MongooseModule.forRoot('mongodb://admin:admin@localhost:30000', {
    dbName: 'custom_db_name',
  })
]

Unable to connect mongoDB using nestjs/mongoose

3 Answers3