Cannot connect to mongodb on Ubuntu EC2

[Sam Ako]

I created an ubuntu machine on EC2 a month or so back with the standard free tier image ubuntu/images/hvm-ssd/ubuntu-trusty-14.04-amd64-server-20170110 (ami-49c9295f) running Ubuntu 14.

Mongoose version is 3.8.40

Mongodb version is (Mongoose dep in node modules) is 1.4.38

Mongodb version on server gives: MongoDB shell version: 3.0.14

I've tried pretty straight forward connection examples such as is shown in this project: https://github.com/simonholmes/mongoose-default-connection

var dbURI = 'mongodb://localhost/ConnectionTest';
mongoose.connect(dbURI)

mongoose.connection.on('connected', function () {

  console.log('Mongoose default connection open to ' + dbURI);
}

This works locally, but not on my EC2 server. I've tried switching to "mongodb://127.0.0.1/ConnectionTest"

and "mongodb://127.0.0.1:27017/ConnectionTest" but none has worked.

Execution just goes over that line but no connection is established. When i log the connection state, it's always on"connecting".

Also same code worked on a earlier EC2 Ubuntu server I had.

Hope someone here can help :)

Thanks

[Gary Rusher]

I have an ec2 with a working mongo db connection.

mine looks like this.

mongoose.connect(this.database.url(), this.database.options)
      .then(() => {
        console.log('Mongoose default connection open');
      })
      .catch((err) => {
        console.log('Mongoose default connection error: ' + err);
      });

export class Database {
 constructor(){}
 //WORKS WITH AUTHENTICATION
 url() {return 'mongodb://User:passwordUser@localhost:27017/database'; }
 options() { return {useMongoClient: true }
}

     // mongoose.connection.on('connected', this.onConnected );
     // mongoose.connection.on('error', this.onError)
    /*******************************************************************/
    process.on('SIGINT', this.cleanUp)
  }