MongoError: user is not allowed to do action

Question

I am using MongoDB Atlas as my database.

I am using angular4 with loopback as api.

My application connects to my database fine. However, when I try to get data, I get this error (I have replaced my dbname with dbname) :

MongoError: user is not allowed to do action [find] on [dbname.$cmd]

The query works fine if I use a local mongodb client or a mongodb instance on AWS. However, when using atlas, I get this error.

Answer 1

I had the same error myself.

• If you are using v.3.0 of the MongoDB NodeJS driver refer to MikaS post for the MongoClient.connect changes that need to be made. https://stackoverflow.com/a/47662979/8775223

• To connect your application to Atlas MongoDB use the 3.4 driver eg.

  mongodb://<USERNAME>:<PASSWORD>@cluster0-shard-00-00-
  rb899.mongodb.net:27017,cluster0-shard-00-01-
  rb899.mongodb.net:27017,cluster0-shard-00-02-
  rb899.mongodb.net:27017/<DBNAME>?ssl=true&replicaSet=Cluster0-shard-
  0&authSource=admin
  

Answer 2

In the Atlas cluster, select Security tab, press on button Edit then add a role readWriteAnyDatabase to the user. Try again or refresh your connection to see the result.

Answer 3

If you are using v3.0 mongodb for Node.js you should use the new API as follows, and the MongoDB Atlas URI connection string for driver 3.4 and earlier:

MongoClient.connect(uri, function(err, client) {
  console.log("Connected successfully to server");

  const db = client.db(dbName);
});

Answer 4

Ugh! This took way too much time to fix! For those of you who have the same issue. I had to do both:

1> I had this error, my problem was that I had not changed the database name from "test" to my own database when coping the connection string. – Meier Dec 8 '17 at 12:43

2>

"mongodb://:@cluster0-shard-00-00- rb899.mongodb.net:27017,cluster0-shard-00-01- rb899.mongodb.net:27017,cluster0-shard-00-02- rb899.mongodb.net:27017/?ssl=true&replicaSet=Cluster0-shard- 0&authSource=admin"

Also, In Atlas, you have to specify the older driver 2.2.12 or later. After doing these things it finally worked.

Thanks all!