title: Can't initiate replica set in Ubuntu
body: <p>Whenever I type: <code>rs.initiate()</code>, I get the following error message:</p>
  
  <pre><code>{
      "info2" : "no configuration explicitly specified -- making one",
      "me" : "VMHOSTNAME:27017",
      "ok" : 0,
      "errmsg" : "No host described in new configuration 1 for replica set rs0 maps to this node",
      "code" : 93
  }
  </code></pre>
  
  <p>I'm running under google-cloud-engine with latest MongoDB.</p>
  
  <p>Any suggestions on how to solve this?</p>