Unable to connect to mongodb databse using node.js - node.js

Question

I am unable to connect to mongodb from node.js using mongoose as database driver. Also I am getting the following error.
Error:
Error in DB connection:{"ok":0,"code":18,"codeName":"AuthenticationFailed","name":"MongoError"}
I am explaining my code below.
const mongoose = require('mongoose');
const dbUser = process.env.USERNAME || 'admin';
const dbPass = process.env.PASSWORD || 'admin';
const dbServer = 'edqart-mongodb';
const dbPort = process.env.MONGO_PORT || '27017';
let dbName = 'edqart-db';
const url = `mongodb://${dbUser}:${dbPass}#${dbServer}:${dbPort}/${dbName}`;
console.log('url', url);
const options = {
useNewUrlParser: true,
useCreateIndex: true,
connectTimeoutMS: 5000000,
poolSize: 10000,
useUnifiedTopology: true
};
/*
1- Connect to mongo server
*/
mongoose.connect(url, options, (err) => {
if(!err) {
console.log('Mongodb connection with mongoose successed');
} else {
console.log('Error in DB connection:' + JSON.stringify(err, undefined, true));
}
})
Here the database edqart-db is not actually present inside that particular mongo server. I need once one record will insert the db will created dynamically. If I have let dbName = 'admin'; then my node is connected to mongodb but for other db which is not created from beginning its showing error. I need once one record is going to insert then the db edqart-db will created. Here I just need the similar method like client.db(dbName) of require('mongodb').MongoClient for mongoose also.

Answer 1

I don't think its possible to authenticate on non existing db.
Here is what you should do if you want to enable auth on edqart-db.
Create a database edqart-db.
Create a user on that edqart-db. lets say username=edqartReadUser and password=edqartReasPassword.
Then your existing code should work below url.
const dbUser = process.env.USERNAME || 'edqartReadUser';
const dbPass = process.env.PASSWORD || 'edqartReasPassword';
const dbServer = 'edqart-mongodb';
const dbPort = process.env.MONGO_PORT || '27017';
let dbName = 'edqart-db';
const url = `mongodb://${dbUser}:${dbPass}#${dbServer}:${dbPort}/${dbName}`;