Question 118071 in Mongodb Question posted in
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Mongodb – MongoServerError – bad auth Authentication failed?

i was tryin to connect with mongodb. it shows me MongoServerError: bad auth : Authentication failed.
code given below

const express = require("express");
const cors = require("cors");
const { MongoClient } = require("mongodb");
require("dotenv").config();
const port = process.env.PORT || 4000;
const app = express();
app.use(cors());
app.use(express.json());

//mongodb connect

const uri = `mongodb+srv://${process.env.DATABASE_USER}:${process.env.DATABASE_PASS}@cluster0.zobm7.mongodb.net/myFirstDatabase?retryWrites=true&w=majority`;
const client = new MongoClient(uri, {
  useNewUrlParser: true,
  useUnifiedTopology: true,
});
client.connect((err) => {
  const collection = client.db("mac-yard").collection("products");
  // perform actions on the collection object
  console.log("database conected");
  client.close();
});

app.get("/", (req, res) => {
  res.send("hello");
});
app.listen(port, () => {
  console.log("listening to port", +port);
});
Tags:

3

Answers


  1. 0

    I just encountered this error:

    Server is running on port: 5000
    MongoServerError: bad auth : Authentication failed.
    at Connection.onMessage (/home/mostafa/documents/local-repositories/mern-mongodb-tutorial/server/node_modules/mongodb/lib/cmap/connection.js:202:30)
    at MessageStream. (/home/mostafa/documents/local-repositories/mern-mongodb-tutorial/server/node_modules/mongodb/lib/cmap/connection.js:62:60)
    at MessageStream.emit (node:events:527:28)
    at processIncomingData (/home/mostafa/documents/local-repositories/mern-mongodb-tutorial/server/node_modules/mongodb/lib/cmap/message_stream.js:108:16)
    at MessageStream._write (/home/mostafa/documents/local-repositories/mern-mongodb-tutorial/server/node_modules/mongodb/lib/cmap/message_stream.js:28:9)
    at writeOrBuffer (node:internal/streams/writable:390:12)
    at _write (node:internal/streams/writable:331:10)
    at Writable.write (node:internal/streams/writable:335:10)
    at TLSSocket.ondata (node:internal/streams/readable:766:22)
    at TLSSocket.emit (node:events:527:28) {
    ok: 0,
    code: 8000,
    codeName: ‘AtlasError’,
    [Symbol(errorLabels)]: Set(1) { ‘HandshakeError’ }
    Solution: If you’ve got a config.env file in your project server side directories, where you have put your ATLAS_URI
    Just login to your https://cloud.mongodb.com account and beside your Cluster name, you would find a green button named Connect, there, click on Connect your application and copy the connection string. Go back to the config.env file and update the ATLAS_URI like below:
    ATLAS_URI=mongodb+srv://<username>:<password>@sandbox.jadwj.mongodb.net/employees?retryWrites=true&w=majority
    Now I think you are good to go 😉

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  2. 0

    for my case user ID password were right .
    but my error was "<>"

    mongodb+srv://user:@cluster0

    solution >>> No tag
    mongodb+srv://user:password@cluster0

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  3. 0

    You probably already tried this already but I made a new user with the most basic login credentials and this stopped me from getting this error. See link to for support https://www.youtube.com/watch?v=wvlJGvP18Qk.

    From there you can try making a user with your desired details.

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