got and error when i connect mongo db to nodejs

Question

```const timeoutError = new error_1.MongoServerSelectionError(Server selection timed out after ${serverSelectionTimeoutMS} ms, this.description); .MongoServerSelectionError: connect ECONNREFUSED ::1:27017

const {MongoClient}=require('mongodb');

const url='mongodb://localhost:27017/';

const client= new MongoClient(url);

const dataBase= 'nodejs';

async function getdata(){
    
    let result= await client.connect(); 
     console.log('connect to server')
    let db= result.db(dataBase)
    console.log('2')
    let collection = db.collection('node');
    let response= await collection.find({}).toArray();
    console.log(response)
}

getdata();

Is your mongo server up and running? Doesn't seem like it ... — derpirscher
– derpirscher, Commented Nov 29, 2022 at 12:21

Muqtadir Billah · Accepted Answer · 2022-11-29 12:59:03Z

1

Change uri to

const url='mongodb://0.0.0.0:27017/';

answered Nov 29, 2022 at 12:59

Muqtadir Billah

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4 Comments

jaswant patel Over a year ago

but can you explain why we add "mongodb://0.0.0.0:27017/" instead of localhost

Muqtadir Billah Over a year ago

0.0.0.0, in this context, means "all IP addresses on the local machine" (in fact probably, "all IPv4 addresses on the local machine").

jaswant patel Over a year ago

ohh so the local machine ip is not fixed. so is any other option instead of this?

Muqtadir Billah Over a year ago

Please have a look at this it explains in detail serverfault.com/questions/78048/…

Iangyl · Accepted Answer · 2022-11-29 12:21:40Z

1

This happened probably because the MongoDB service isn't started.

Follow the below steps to start it:

Go to Control Panel and click on Administrative Tools. (in Windows the path will be: Control Panel\System and Security\Administrative Tools)
Double click on Services. A new window opens up.
Search MongoDB.exe. Right click on it and select Start.

The server will start. Now execute npm start again and the code might work this time.

The answer from a similar question (I can't comment so I post as an answer)

edited Nov 29, 2022 at 12:21

answered Nov 29, 2022 at 12:14

Iangyl

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2 Comments

jaswant patel Over a year ago

sir actiually i follow this process but i not found any file mongodb.exe file in services

jaswant patel Over a year ago

actually i'm using mongoDB 6.0 version. i'm check the version of mongoDB in my pc and not get any version just mongo is not internal and external command

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