how to authenticate mongoose connection mongodb in node.js

Question

I have created mongodb user with command

use admin
db.createUser(
    {
      user: \"superuser\",
      pwd: \"12345678\",
      roles: [ \"root\" ]
    }
)
         


        

Answer 1

I did run a mongo service using docker and then connected my mongoose to it with this code

const _database = 'mongodb://user:pass@localhost:port/MyDB?authSource=admin';
mongoose.connect(_database, {
    useNewUrlParser: true
})
.then(() => console.log('Connected to MongoDB ...'))
.catch(err => console.error('Could not connect to MongoDB:‌', err));

this is equal to

mongo --username user --password pass --authenticationDatabase admin --port 27017

on connection and then use MyDB database for doing operations like find, aggregate, insert and etc on it.

if you have no user (MongoDB default user) for your database then you can change Database like bellow:

const _database = 'mongodb://localhost:port/MyDB';

27017 is default MongoDB port if your MongoDB port hasn't changed either then you can do the same for port too. like bellow:

const _database = 'mongodb://localhost/MyDB';

this is the same as bellow:

mongo

above code is because there is no user and no port then for not been a user there is no need for authentication database either.