How to connect to mongoDB compass with Node.js

Question

I am trying to send data from node.js to a mongoDB compass server. I have created a MongoDB cluster and downloaded Compass. I can connect Compass to the cluster it all works fine.

However when I try to connect my Node.js server to Compass I get an error, Below is my node code.

const express = require('express'); const MongoClient = require('mongodb').MongoClient; const assert = require('assert'); const app = express(); // Connect to mongodb // Connection URL const url = "mongodb://tfi-mfgbt.mongodb.net/test" ; // Database Name const dbName = 'TFI'; // Use connect method to connect to the server MongoClient.connect(url, function(err, client) { assert.equal(null, err); console.log("Connected successfully to server"); const db = client.db(dbName); client.close(); }); const port = 5000; app.listen(port, () => { console.log(`Server started on port ${port}`); });

One I run Node app.js in terminal I get

MongoClient.connect. Server started on port 5000 F:\code\vidjot\node_modules\mongodb\lib\operations\mongo_client_ops.js:439 throw err; ^ AssertionError [ERR_ASSERTION]: null == 'MongoNetworkError: failed to connect to server [tfi-mfgbt.mongodb.net:27017] on first connect [MongoNetworkError: getaddrinfo E at F:\code\vidjot\app.js:20:10 at err (F:\code\vidjot\node_modules\mongodb\lib\utils.js:415:14) at executeCallback (F:\code\vidjot\node_modules\mongodb\lib\utils.js:404:25) at err (F:\code\vidjot\node_modules\mongodb\lib\operations\mongo_client_ops.js:284:21) at connectCallback (F:\code\vidjot\node_modules\mongodb\lib\operations\mongo_client_ops.js:240:5) at process.nextTick (F:\code\vidjot\node_modules\mongodb\lib\operations\mongo_client_ops.js:436:7) at _combinedTickCallback (internal/process/next_tick.js:131:7) at process._tickCallback (internal/process/next_tick.js:180:9) [nodemon] app crashed - waiting for file changes before starting...

The hostname "mongodb://tfi-mfgbt.mongodb.net/test" is the host name of my Compass session. As seen here

Sergi Nadal · Accepted Answer · 2021-12-27 08:10:49Z

To connect with Mongo I use this lines of code:

 var mongoUrl = '"mongodb://tfi-mfgbt.mongodb.net/test"' var mongoose = require('mongoose') // updated 2021 mongoose.Promise = global.Promise; mongoose.set('useNewUrlParser', true); mongoose.set('useFindAndModify', false); mongoose.set('useCreateIndex', true) mongoose.connect(mongoUrl, { useUnifiedTopology: true }) .then(() => { log('Connected to MongoDB: %s \n ', mongoUrl) }) .catch((err) => { error('MongoDB connection error: %s \n', err); }) // Old connection //mongoose.connect(mongoUrl, { useMongoClient: true }) //mongoose.connection.on('error', err => debug('MongoDB connection error: ${err}'));

This should work for you!

And to query:

mySchema.find({},function(err, docs){... My code ...})

Thanks this worked! I upvoted you, but I am too low of a level for it to be recorded. But thanks again!
useMongoClient will error out if you try this in 2021. just remove useMongoClient and test your connection using .on('connected')

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