MongoDB atlas connection fails with error MongoServerSelectionError: connection <monitor> to 52.64.0.234:27017 closed

Question

I have set up a mongodb Atlas free tier cluster. When I try to connect to it with node js, it throws an error. I have white listed my IP both manually and with select current. I have also tried adding +srv to my connection url but that just causes more errors.

Here is the node js code I was trying to connect with

const { MongoClient } = require("mongodb");                                                                                                                                       

const url = "mongodb://user1:[email protected]/test?retryWrites=true&w=majority&useNewUrlParser=true&useUnifiedTopology=true";

const client = new MongoClient(url);

async function run() {
    try {
        await client.connect();
        console.log("Connected correctly to server");

    } catch (err) {
        console.log(err.stack);
    }
    finally {
        await client.close();
    }
}

run().catch(console.dir);

and here is the error I get

MongoServerSelectionError: connection to 52.64.0.234:27017 closed at Timeout._onTimeout (C:\Users\YOUNG\node_modules\mongodb\lib\core\sdam\topology.js:430:30) at listOnTimeout (internal/timers.js:549:17) at processTimers (internal/timers.js:492:7)

people with a similar problem were able to solve it by whitelisting their ip addresses, but it hasn't worked for me. What could possibly be the problem?

I have tried allowing access for all ips but the error persists and when I use the uri with +srv, I get the following error

MongoServerSelectionError: Authentication failed.
at Timeout._onTimeout (C:\Users\YOUNG\node_modules\mongodb\lib\core\sdam\topology.js:430:30)
at listOnTimeout (internal/timers.js:549:17)
at processTimers (internal/timers.js:492:7)

Answer 1

It is because your IP address is not whitelisted . Go to network access in your mongodb atlas in your project and ADD IP ADDRESS . to test just add access from anywhere option there you go get back and try again with the connection string .

Answer 2

Go to your network access at your cluster in MongoDB

Answer 3

Go to network access in mongo db and add in the Ip address 0.0.0.0, and everything will be okay.

Answer 4

You are missing tls=true URI option in the connection string.

You should also use the SRV URI that is provided by Atlas by default which takes care of this.

Answer 5

const client = new MongoClient(uri, 
{
useNewUrlParser: true,
useUnifiedTopology: true,
});
client.connect(() =>
{
your_collection = client.db('your_db_name').collection('collection_name')
})

This worked for me.

Answer 6

I also had the same problem you encountered and found out the IP address is not correct which is set in "Network Access".

Try the followings:

• Go to your MongoDB Atlas Project page
  • Click "Network Access"
  • Click "ADD CURRENT IP ADDRESS" button (it's very useful!)
  • Click "Confirm"

And now, the right IP address to connect with your PC is shown in IP Access List.

That's all!