MongoError connect ECONNREFUSED 127 0 0 1 27017

Question

I m using NodeJS wih MongoDB using mongodb package  When I run mongod command it works fine and gives  quot waiting for connection on port 27017 quot   So  mongod seems to be working  But MongoClient does not work and gives error when I run node index js command- MongoError  failed to connect to server  localhost 27017  on first connect  MongoError  connect ECONNREFUSED 127 0 0 1 27017    I have install mongo db 3 4 and my code is- var MongoClient   require  mongodb   MongoClient  var dburl            quot mongodb   localhost 27017 test quot   MongoClient connect dburl  function err  db      if  err        throw err        console log  db connected      db close         I have created data db directories on root and given write permissions  mongod conf file takes db path as- storage  dbPath   var lib mongo But it seems that it is actually taking db path as data db and not var lib mongo It working earlier but suddenly stopped

User · Answer

I ve forgot to start MongoDB at all  Go to separate tab in terminal and type   sudo service mongod start

User · Answer

most probably your mongo db service is not started   For ubuntu    sudo service mongod start For windows   go to services and start the MongoDB service  also install link for mondoDB service https   www mongodb com download-center community  I had this problem and i solved it thanks to this man s answer https   stackoverflow com a 47433551 7917608

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For Windows users  This happens because the MondgDB server is stopped  to fix this you can   1 search for Services  for that search using the left bottom corner search option  2 then there is a gear icon named with  Services   3 after clicking that you will get a window with lot of services 4 scroll down and you will find  MongoDB server  MongoDB    5 so you will see that there is an option to start the service  6 start it   1 then open your command prompt  2 type mongod   now you can connect to your server  this steps also working fine if your sql server service down   find sql server services

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You probably need to continue running your DB process  by running mongod  while running your node server

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I had the same error because i had not installed mongoDB  Make sure that you have mongodb installed and if not  you can download it from here https   www mongodb com download-center community

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In my particular instance  I was connected to a VPN and that was blocking the localhost connection to MongoDB somehow  It worked when I disconnected my VPN  It s a special case  but good to know nonetheless  So anything impeding your network connectivity  Get that fixed

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For Ubuntu users run sudo systemctl restart mongod

User · Answer

Try to start mongoDB server by giving the --dbpath with mongod   sudo mongod --dbpath  var lib mongo data db  amp      amp   in the last will start the mongodb server as service on your server    Hope it Works

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because you didn t start mongod process before you try starting mongo shell  Start mongod server mongod  Open another terminal window Start mongo shell mongo

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If you already installed  quot MongoDB quot   if you accidentally exit from the MongoDB server  then  quot restart your system quot   This method solved me     On Windows only  And also another method is there  press  Windows   R  type  services msc  and click  quot ok quot   it opens  quot services quot  window  and then search for  quot MongoDB Server quot  in the list  After you find  quot MongoDB Server quot   right-click and choose  quot start quot  from the pop-up menu  The MongoDb Server will start running  Hope it works

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On a mac I had to run brew services start mongodb-community 4 4 Check  Install MongoDB Community Edition on macOS

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For windows - just go to Mongodb folder   ex   C  ProgramFiles MongoDB Server 3 4 bin  and open cmd in the folder and type  mongod exe --dbpath c  data db   if c  data db folder doesn t exist then create it by yourself and run above command again   All should work fine by now

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If you are a windows user  right click on Start and open Windows Powershell Run as administartor   Then type  mongod   That s it  Your database will surely get connected

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For Windows users  Mongo version 4 4 Use following commands  NET STOP MONGODB     To stop MongoDB as a service if this returns  quot mongoDb service is not running then use below command to start service quot  NET START MONGODB     To start MongoDB as a service  This worked for me

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I had below error   Error  connect ECONNREFUSED 127 0 0 1 27017   In my case  this issue occurred since MongoDB is not installed at all   The solution was to install MongoDB from below location    https   www mongodb com download-center community    After installing the ECONNREFUSED error did not appear again   Hope that helps

User · Answer

I was facing the same issue on windows 10  I just uninstall MongoDB and installed it again and it started working  It solved my problem

User · Answer

The solution was to install MongoDB from below location  https   www mongodb com download-center community

User · Answer

Please ensure that your mongo DB is set Automatic and running at Control Panel Administrative Tools Services like below  That way you wont have to start mongod exe manually each time

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Press CTRL ALT DELETE task manager   then go to services   find MongoDB   right click on it  start  go back to terminal   npm start it will work

User · Answer

I was having the same problem today   and has been searching for answers   I am on Ubuntu    however  I could not find the correct one that works on this thread   after much research the following worked for me finally      First  after running mongod dbpath  if appeared that mongodb was looking for the data db directory   which was missing in my installed mongodb app   so I ran the following commands    sudo mkdir -p  data db  then run    sudo chown -R  USER  data db  chown - changes ownership of files dirs  Ie  owner of the file dir changes to the specified one  but it doesn t modify permissions  As detailed here  https   unix stackexchange com questions 402062 how-are-chown-and-chmod-command-different-in-the-given-operation Finally  run    sudo systemctl enable mongod service  It will give a message  Created symlink  etc systemd system multi-user target wants mongod service    lib systemd system mongod service and started the service

User · Answer

just start the mongo server from terminal Ubuntu -      sudo systemctl start mongod

User · Answer

I had the same issue on Windows   Ctrl C to close mongod  and start mongod again   Am not sure  but it seems that initially mongod was working opening and closing connections   Then  it was not able to close some earlier connections and reached limit for opened ones   After restarting mongod  it works again

User · Answer

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  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

[node.js] MongoError: connect ECONNREFUSED 127.0.0.1:27017

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