MongooseServerSelectionError: connect ECONNREFUSED ::1:27017-CodePudding

I have a problem when I try to connect my app with my database with Mongoose.

I already try the solutions that I found on google: restarting MongoDB service on windows, manually open db with cmd located on bin file of mongodb, etc.

But I can't solve it. Can anyone help me ?

//my connection
const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/notes-db-app',{
    useNewUrlParser: true, 
    useUnifiedTopology: true
})
.then(db => console.log('DB is connected'))
.catch(err => console.log(err));

And throw's me , this error

MongooseServerSelectionError: connect ECONNREFUSED ::1:27017 at NativeConnection.Connection.openUri (C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\connection.js:797:32) at C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\index.js:330:10 at C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\helpers\promiseOrCallback.js:32:5 at new Promise () at promiseOrCallback (C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\helpers\promiseOrCallback.js:31:10) at Mongoose._promiseOrCallback (C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\index.js:1151:10) at Mongoose.connect (C:\Users\ivan\Desktop\NodeJS\notes-app\node_modules\mongoose\lib\index.js:329:20) at Object. (C:\Users\ivan\Desktop\NodeJS\notes-app\src\db.js:3:10)
at Module._compile (node:internal/modules/cjs/loader:1095:14) at Object.Module._extensions..js (node:internal/modules/cjs/loader:1147:10) {
reason: TopologyDescription { type: 'Unknown', servers: Map(1) { 'localhost:27017' => [ServerDescription] }, stale: false, compatible: true, heartbeatFrequencyMS: 10000, localThresholdMS: 15, logicalSessionTimeoutMinutes: undefined } }

CodePudding user response：

Probably the hostname/IP of the server to which you want to connect is not correctly set.
I'm used to see that error as:

MongooseServerSelectionError: connect ECONNREFUSED <hostname/hostIP>:<port>

and in the console log you've posted, the <hostname/hostIP> part is malformed/missing.

Example - for a mongodb server running locally on port 27017 this is the error when server is down:

MongooseServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017

If you're using mongodb URI to connect to the db make sure that it looks like this

"mongodb://<hostname/hostIP>:<port>"

Hope this could help

CodePudding user response：

Is MongoDB running on PORT 27017? Make sure it's running on the specified PORT. See if it solves your problem. Also check your credentials: Mongo username and password.

It would have been more helpful if you had posted your source code for database connection.