title: Mongodb connection failed (Connection refused)
body: <p>I'm creating a basic web application on OSX for the first time.</p>
  
  <p>I've installed MongoDB and I can use the 'mongo' command from the terminal, but I can't get into the mongodb shell with it.</p>
  
  <pre><code>SOE-SOE01492:evnt humadshah$ mongo
  MongoDB shell version v3.4.6
  connecting to: mongodb://127.0.0.1:27017
  2017-07-13T13:29:20.917+0500 W NETWORK  [thread1] Failed to connect to 127.0.0.1:27017, in(checking socket for error after poll), reason: Connection refused
  2017-07-13T13:29:20.917+0500 E QUERY    [thread1] Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed :
  connect@src/mongo/shell/mongo.js:237:13
  @(connect):1:6
  exception: connect failed
  </code></pre>
  
  <p>I have absolutely no idea what is causing this. I have never encountered this error on Windows before.</p>