title: Deploying Meteor and MongoDB to Heroku
body: <p>I am attempting to deploy my project to Heroku following a particular guide (http://bytesofpi.com/post/20898722298/pushing-your-meteor-project-to-heroku)</p>
  
  <p>One of the steps states that </p>
  
  <pre><code>var mongo_url = process.env.MONGOHQ_URL;
  </code></pre>
  
  <p>Needs to replace "MONGO_URL" in server/server.js.</p>
  
  <p>The problem is I can't find that variable at all, the only mention of that variable is in the following code</p>
  
  <pre><code>    // check for a valid MongoDB URL right away
      if (!process.env.MONGO_URL)
           throw new Error("MONGO_URL must be set in environment");
  </code></pre>
  
  <p>Does anybody have any experience with this, or know where to find "MONGO_URL in order to change it?</p>