1

C:\mynodeprojects\test>node app Sever start on 300 failed to connect to server [localhost:27017] on first connect [MongoError: geta ddrinfo ENOENT localhost:27017]

Package : -

{
  "name": "test",
  "version": "1.0.0",
  "description": "simple test app",
  "main": "app.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "hukam thakur",
  "license": "ISC",
  "dependencies": {
    "express": "^4.16.2",
    "mongodb": "^2.2.33",
    "mongoose": "^4.10.8",
    "sudo": "^1.0.3"
  }
}

DB Connection here: -

var mongoose = require('mongoose');

var mongoURI = "mongodb://localhost:27017/test";
var MongoDB = mongoose.connect(mongoURI).connection;
MongoDB.on('error', function(err) { console.log(err.message); });
MongoDB.once('open', function() {
  console.log("mongodb connection open");
});
Improve this question
5
  • Seriously? Show your code, please. Commented Nov 10, 2017 at 12:08
  • Welcome to SO. Please take a minute to read on How to ask a question. Commented Nov 10, 2017 at 12:12
  • Could you please tell me, Where I'm doing wrong? Commented Nov 10, 2017 at 12:14
  • iagnostic data capture with directory 'C:/data/db/diagnostic.data' 2017-11-13T18:27:43.800+0530 I NETWORK [thread1] waiting for connections on por t 27017 Commented Nov 13, 2017 at 13:00
  • I experienced this same issue, in my case the DB didn't exist. I created it previously but it seemed to have not saved to persistent memory somehow. I recreated my database via the command line then I was able to connect. For troubleshooting you can try accessing any members of the database in a more manual way, like through the command line. Commented Mar 20, 2020 at 0:24

2 Answers 2

Reset to default
3

Please Try this code it's work for me :

var database,

ObjectId = require('mongodb').ObjectID,

MongoClient = require('mongodb').MongoClient,

url = 'mongodb://localhost:27017/test',

connection=MongoClient.connect(url, function(err, db) {  
  if (err) throw err;
  database=db;
});

Then write query like (eg for find uniqueId)-

database.collection("users").findOne({_id:new ObjectId(userId)}, function(err, res) { 
 if (err) console.log(err);
   console.log(res);
});
Improve this answer
Sign up to request clarification or add additional context in comments.

7 Comments

have u use this command for ubuntu to allow mongodb access - sudo ufw allow 27017
Server listening on port 3000 ^ MongoError: failed to connect to server [localhost:27017] on first connect [MongoError: connect ECONNREFUSED 127.0.0.1:27017]
Mongo port default 27017. You can access mongo in node when you allow ufw command. It provide access to mongo database
iagnostic data capture with directory 'C:/data/db/diagnostic.data' 2017-11-13T18:27:43.800+0530 I NETWORK [thread1] waiting for connections on por t 27017
which OS you have used?
|
0

use 127.0.0.1 instead of localhost

Improve this answer

Comments

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.