Question 38082 in Ubuntu Question posted in
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Connection problem to mongoDB with nodeJS – Ubuntu

I host a Mongo database on an ubuntu server. I created an admin user in order to be able to connect with Nodejs to create a database, add tables, etc. I can connect with mongoDB compass without problems but from nodeJS mongo returns an error.

connect function:

const mongoose = require("mongoose");
mongoose.set("strictQuery", true);
//connect to db
mongoose
    .connect("mongodb://" + process.env.DB_USER_PASS + "@2.56.247.250:27017/?authMechanism=DEFAULT")
    .then(() => console.log('Connecté a la base de donné'))
    .catch((err) => console.log("Erreur de connexion :", err));

Here is the error:

Erreur de connexion : MongoServerError: Authentication failed.
    at Connection.onMessage (C:UsersarnauDesktopmessIOnode_modulesmongodblibcmapconnection.js:230:30)
    at MessageStream.<anonymous> (C:UsersarnauDesktopmessIOnode_modulesmongodblibcmapconnection.js:61:60)
    at MessageStream.emit (node:events:513:28)
    at processIncomingData (C:UsersarnauDesktopmessIOnode_modulesmongodblibcmapmessage_stream.js:125:16)
    at MessageStream._write (C:UsersarnauDesktopmessIOnode_modulesmongodblibcmapmessage_stream.js:33:9)
    at writeOrBuffer (node:internal/streams/writable:392:12)
    at _write (node:internal/streams/writable:333:10)
    at Writable.write (node:internal/streams/writable:337:10)
    at Socket.ondata (node:internal/streams/readable:766:22)
    at Socket.emit (node:events:513:28) {
  ok: 0,
  code: 18,
  codeName: 'AuthenticationFailed',
  connectionGeneration: 0,
  [Symbol(errorLabels)]: Set(2) { 'HandshakeError', 'ResetPool' }
Tags:

2

Answers


  1. 0

    The error AuthenticationFailed means that there is a problem with your connection string and your driver cannot connect into it.
    Check for all details here: https://www.mongodb.com/docs/manual/reference/connection-string/

    Potential problems:

    1. Special Chars: From the docs: If the username or password includes the following characters: / ? # [ ] @ those characters must be converted using percent encoding.
    2. username:password format check that your environmental variable is on the right format, with : between username and pass, and no spaces.
    3. Check your auth database: When you created the user, you created on default ("admin" db is the default.) or created on a specific db, using the command use dbname. If you created on a specific db, you might need to add the auth db name on the connection string.

    You can try all the above solutions, making a connection using the mongosh command, to verify that your connection string is fine.

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  2. 0

    Another possible cause of the problem your set IP address. You can fix this by adding you current IP address in the network access tab.

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