ECONNREFUSED error when connecting to mongodb from node js

Question

I know I m doing some very stupid and noobish  but I m hoping someone can help me set up a basic database connection to mongodb from node js on a mac   I ve installed mongodb using homebrew  seems to have worked quite well   I have started the server  mongod  as the locally logged in user  and opened a second terminal and confirmed that I can connect to it by using mongo   When I run mongo I get the message  connecting to  localhost 27017 test  followed by a command prompt   Ran a few commands in the mongo shell everything seems to be working there   Left both terminals open and running   I ve also confirmed that I can reach the web interface at localhost 28017    I installed node js and added the mongoose package   Now attempting to connect using a super simple node js app  also running as locally logged in user    var mongoose   require  mongoose    mongoose connect  mongodb   localhost test      I receive the following error  events js 72         throw er     Unhandled  error  event                 Error  connect ECONNREFUSED     at errnoException  net js 901 11      at Object afterConnect  as oncomplete   net js 892 19    Banging my head against the wall trying to get something so simple to work   What am I missing   Edit  Here are the logs from mongod   As you can see I tried multiple times and they re all failing rather instantaneously   Thu Dec  5 08 19 43 700  initandlisten  MongoDB starting   pid 14412 port 27017 dbpath  usr local var mongodb 64-bit host mobadmins-MacBook-Pro-3 local            08 19 43 700  initandlisten  db version v2 4 8            08 19 43 700  initandlisten  git version  nogitversion            08 19 43 700  initandlisten  build info  Darwin mobadmins-MacBook-Pro-3 local 12 4 0 Darwin Kernel Version 12 4 0  Wed May  1 17 57 12 PDT 2013  root xnu-2050 24 15 1 RELEASE X86 64 x86 64 BOOST LIB VERSION 1 49            08 19 43 700  initandlisten  allocator  tcmalloc            08 19 43 700  initandlisten  options    bind ip   127 0 0 1   config    usr local etc mongod conf   dbpath    usr local var mongodb   logappend   true   logpath    usr local var log mongodb mongo log   rest  true              08 19 43 700  initandlisten  journal dir  usr local var mongodb journal            08 19 43 700  initandlisten  recover   no journal files present  no recovery needed            08 19 43 729  websvr  admin web console waiting for connections on port 28017            08 19 43 729  initandlisten  waiting for connections on port 27017            08 22 34 561  initandlisten  connection accepted from 127 0 0 1 52160  3  1 connection now open             08 22 34 563  conn3  recv    message len 1124073472 is too large  Max is 48000000            08 22 34 563  conn3  end connection 127 0 0 1 52160  0 connections now open             08 24 41 298  initandlisten  connection accepted from 127 0 0 1 52166  4  1 connection now open             08 24 41 304  conn4  end connection 127 0 0 1 52166  0 connections now open             08 25 06 938  initandlisten  connection accepted from 127 0 0 1 52168  5  1 connection now open             08 25 06 943  conn5  end connection 127 0 0 1 52168  0 connections now open             08 25 18 220  initandlisten  connection accepted from 127 0 0 1 52172  6  1 connection now open             08 25 18 225  conn6  end connection 127 0 0 1 52172  0 connections now open             08 25 38 811  initandlisten  connection accepted from 127 0 0 1 52175  7  1 connection now open             08 25 38 816  conn7  end connection 127 0 0 1 52175  0 connections now open

User · Answer

Use this code to setup your mongodb connection:

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");
});

Make sure mongod is running while you start the server. Are you using Express or just a simple node.js server? What is the error message you get with the above code?

User · Answer

I also got stucked with same problem so I fixed it like this    If you are running mongo and nodejs in docker container or in docker compose  so replace localhost with mongo  which is container name in docker in my case  something like this below in your nodejs mongo connection file   var mongoURI    mongodb   mongo 27017  lt nodejs container name gt

User · Answer

I had facing the same issue while writing a simple rest api using node js  eventually found out it was due to wifi blockage and security reason   try once connecting it using your mobile hotspot   if this be the reason it will get resolved immediately

User · Answer

I had the same issue  What I did is to run mongodb command in another terminal  Then  run my application in another tab  This resolved my problem  Though  I am trying other solution such as creating a script to run mongodb before connection is made

User · Answer

Check this post  https   stackoverflow com a 57589615 It probably means that mongodb is not running  You will have to enable it through the command line or on windows run services msc and enable mongodb

User · Answer

I had same problem  It was resolved by running same code in Administrator Console

User · Answer

very strange  but in my case  i switch wifi connection     I use some public wifi and switch to my phone connection

User · Answer

you can go to mongoDB compass client and follow these steps  1 Click Fill in connection fields individually   2 In hostname type   127 0 0 1  3  Click CONNECT

User · Answer

OK  this was another case of not being truly forthcoming in the info I posted above   My node js app was very simple  but I was including another couple lines in my node js code that apparently caused this issue   Specifically  I had another variable declared which was calling some other code that made a separate database call using incorrect db info   This is why  when using Xinzz s code  the console log error seemed not to change   It wasn t actually the mongoose connect command that was throwing the error   Lesson learned  localize the problem and comment out unrelated code   Sorry guys  I knew this was me being dumb

User · Answer

Mongodb was not running but I had the module for node js The database path was missing  Fix was create new folder in the root so run sudo mkdir -p  data db  then run sudo chown id -u  data db

User · Answer

ECONNREFUSED error  There are few reasons of this error in node     Your port is already serving some service so it will refuse your connection   go to command line and get pid by using following command     lsof -i port number   Now kill pid by using     kill -9 pid which you will get by above command  Your server is not running e g  in this case please check your mongoose server is running or run by using following command     mongod There is also possibility your localhost is not configured properly so use 127 0 0 1 27017 instead of localhost

User · Answer

I tried every possible solution butit didn t help me  I took a break and I changed the following  Simple typo  May help someone is same situation  From  app listen  port   gt console log Server is running at port   PORT    To  app listen PORT  console log Server is running at port   PORT    The earlier got me to connect to database mongo atlas but get request was Error  connect ECONNREFUSED

User · Answer

I had the same issue  all I did was add a setTimeout of about 10 seconds before trying to connect to the Mongo server and it solved the issue right up  I dont know why I had to add a delay but it worked

User · Answer

sometimes you need to check the rightfulness of the IP  firewall  port forwarding  etc  if your target database is in other machines

[node.js] ECONNREFUSED error when connecting to mongodb from node.js

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