Error Message: MongoError: bad auth Authentication failed through URI string

Question

I\'m trying to connect to my mongoDB server via the connection string given to me by mongo:

"mongodb+srv://david:p         


        

Answer 1

I faced a similar issue, weirdly enough it got resolved when I created a new user in database access. This time though I clicked on autogenerate password. It should not matter but in my case it solved the issue.

Answer 2

Are you writing your password in the place of <password>? If your aren't, a good practice is to create a environment variable on your operating system and call it using process.env.[your variable]. Ex:

const password = process.env.YOURPASSWORDVARIABLE
const db = 'mongodb+srv://david:'+password+'@cluster0-re3gq.mongodb.net/test?retryWrites=true'

Better yet, you can also put your whole url connection string inside a env variable:

Answer 3

Finally, it worked for me to used that connection string with a lower grade that NodeJs versions(2.2.12 or later) cluster url. And After that make sure you have to whitelist your current IP Address from Atlas MongoDB. It should display like 0.0.0.0/0 (includes your current IP address) in Network Access section in Atlas MongoDB. Connect to cluster NodeJs version 2.2.12 or later

And the main issue was where I am storing that connection string url in a constant that part. So initially,I was storing that connection string value in single/double quote but every time I was getting Authentication failure error as it was unable to parse that "Password" value from Atlas mongoDB . So I used backtick (``)instead of single/double quote to store that connection string.

Sample code where I am connecting mongoDB Atlas through a NodeJs application.

const DB_USER = 'your username in atlas mongodb';

const PASSWORD = encodeURIComponent('your password in atlas mongodb');

const url = `mongodb://${DB_USER}:${PASSWORD}@cluster0-shard-00-00.3ytbz.mongodb.net:27017,cluster0-shard-00-01.3ytbz.mongodb.net:27017,cluster0-shard-00-02.3ytbz.mongodb.net:27017/sample-db?ssl=true&replicaSet=atlas-z26ao5-shard-0&authSource=admin&retryWrites=true&w=majority`;

mongoose.connect(url,
  {
    useNewUrlParser: true,
    useUnifiedTopology: true,
    useCreateIndex: true,
    useFindAndModify: true
  })
  .then(() => {
    console.log('Connected to database !!');
  })
  .catch((err)=>{
    console.log('Connection failed !!'+ err.message);
  });