Mongodb: failed to connect to server on first connect

Question

I get the following error:

Warning { MongoError: failed to connect to server [mongodb:27017] on first connect     at Pool.<anonymous> (/Users/michaelks/Desktop/users/node_modules/mongodb-core/lib/topologies/server.js:325:35)     at emitOne (events.js:96:13)     at Pool.emit (events.js:188:7)     at Connection.<anonymous> (/Users/michaelks/Desktop/users/node_modules/mongodb-core/lib/connection/pool.js:270:12)     at Connection.g (events.js:292:16)     at emitTwo (events.js:106:13)     at Connection.emit (events.js:191:7)     at Socket.<anonymous> (/Users/michaelks/Desktop/users/node_modules/mongodb-core/lib/connection/connection.js:173:49)     at Socket.g (events.js:292:16)     at emitOne (events.js:96:13)     at Socket.emit (events.js:188:7)     at connectErrorNT (net.js:1025:8)     at _combinedTickCallback (internal/process/next_tick.js:74:11)     at process._tickCallback (internal/process/next_tick.js:98:9)   name: 'MongoError',   message: 'failed to connect to server [mongodb:27017] on first connect' } 

Even though I get this in the terminal window where I run Mongo:

2016-12-25T03:45:23.715+0100 I NETWORK [initandlisten] connection accepted from 127.0.0.1:58868 #8 (8 connections now open)  

It kinda looks like there is a connection..

I've tried both

$ mongod  

and

$ brew services start mongo  

This is my test_helper.js

const mongoose = require('mongoose'); mongoose.connect('mongodb:localhost/users_test'); mongoose.connection  .once('open', () => console.log('Good to go!'))  .on('error', (error) => {  console.warn('Warning', error);  }); 

I have not specifically made the db "users_test" as I am under the impression that mongoose or mongo or both will do this on the fly.

I've tried both "localhost" and "127.0.0.1​". I'm on OSX 10.11.5 I'm running Node 7.3.0 and Mongo 3.2.9

What am I doing wrong? How do I figure out what's wrong?

Answer 1

To connect to mongodb with mongoose, you can use :

mongoose.connect('mongodb://localhost/users_test'); 

or

mongoose.connect('localhost/users_test'); 

or

mongoose.connect('localhost','users_test'); 

But not mongoose.connect('mongodb:localhost/users_test');, it doesnt match the right hostname (mongodb instead of localhost)