Connection between MongoDB Atlas and AWS giving timeout error? - mongodb

Question

I'm new to AWS so I apologize for any newbie stuff.
I'm trying to connect a MongoDB Atlas M0 cluster with our AWS EC2 instance, which is running a nodejs / react stack. The problem is that I can't make these two instances connect - AWS and MongoDB that is. When trying to use the backend sign in function (our nodejs api), it just gives this error:
Operation `user_profile.findOne()` buffering timed out after 10000ms
This is our index / connection:
import config from './config';
import app from './app';
import { connect } from 'mongoose'; // MongoDB
import { ServerApiVersion } from 'mongodb';
import https from 'https';
import AWS from 'aws-sdk';
const makeLogger = (bucket: string) => {
const s3 = new AWS.S3({
accessKeyId: <ACCESS_KEY_ID>,
secretAccessKey: <SECRET_ACCESS_KEY>
});
return (logData: any, filename: string) => {
s3.upload({
Bucket: bucket, // pass your bucket name
Key: filename, // file will be saved as testBucket/contacts.csv
Body: JSON.stringify(logData, null, 2)
}, function (s3Err: any, data: any) {
if (s3Err) throw s3Err
console.log(`File uploaded successfully at ${data.Location}`)
});
console.log(`log (${filename}): ${logData}`);
};
};
const log = makeLogger('xxx-xxxx');
log(config.MONGO_DB_ADDRESS, 'mongo_db_address.txt');
const credentials = <CREDENTIALS>
connect(config.MONGO_DB_ADDRESS, {
sslKey: credentials,
sslCert: credentials,
serverApi: ServerApiVersion.v1
}) //, { useNewUrlParser: true })
.then(() => console.log('Connected to MongoDB'))
.catch((err) => console.error('Failed connection to MongoDB', err));
app.on('error', error => {
console.error('app error: ' + error);
});
app.listen(config.WEB_PORT, () => {
console.log(`Example app listening on port ${config.WEB_PORT}`);
});
One of the endpoints giving the timeout error:
router.post('/signin', async (req, res) => {
var form_validation = signin_schema.validate({
email: req.body.email,
password: req.body.password,
});
if (form_validation.error) {
console.log('form validation sent');
//return res.status(400).send(form_validation);
return res.status(400).send({
kind: 'ERROR',
message: 'Sorry - something didn\'t go well. Please try again.'
});
}
var User = model('model', UserSchema, 'user_profile');
User.findOne({ email: req.body.email }, (err: any, the_user: any) => {
if (err) {
return res.status(400).send({
kind: 'ERROR',
message: err.message
});
}
if (!the_user) {
return res.status(400).send({
kind: 'ERROR',
message: 'the_user undefined',
});
}
compare(req.body.password, the_user.password)
.then((result) => {
if (result == true) {
const user_payload = { name: the_user.name, email: the_user.email };
const access_token = sign(user_payload, config.SECRET_TOKEN);
res.cookie('authorization', access_token, {
httpOnly: true,
secure: false,
maxAge: 3600000,
});
return res.send({ kind: "LOADING" });
// return res.send(access_token);
} else {
return res.status(400).send({
kind: 'ERROR',
message: 'Sorry - wrong password or email used.'
});
}
})
})
});
The strange thing is that I can connect from my local developer machine, when running our frontend. Just as I can connect from wsl2 ubuntu cli.
On the Mongo side, I have whitelisted every possible ip address. On the AWS side, I have created the outbound security group policy required. Regarding the inbound, I think it is correct. I've allowed access on the ports 27000 - 28018.
Again - I'm new to AWS, so if anyone can tell me what it is I'm simply not understanding here, I would be very grateful
Thanks

Answer 1

open mongodb atlas Network Access
open 0.0.0.0/0 (includes your current IP address)