title: MongoDB won't start on Fedora/Linux
body: <p>Just finished installing mongodb using</p>
  
  <pre><code>sudo yum install mongodb
  </code></pre>
  
  <p>But when I try running 'mongo' for a rails app I get</p>
  
  <pre><code>[thiago@netbox mongoExample]$ mongo
  MongoDB shell version: 2.2.4
  connecting to: test
  Wed Aug 21 16:07:56 exec error: src/mongo/shell/mongo.js:91 couldn't connect to server 127.0.0.1:27017
  db = new Mongo().getDB( url );
       ^
  
  exception: connect failed
  </code></pre>
  
  <p>I have also tried:</p>
  
  <pre><code>[thiago@netbox mongoExample]$ service mongo start
  Redirecting to /bin/systemctl start  mongo.service
  Failed to issue method call: Access denied
  [thiago@netbox mongoExample]$ sudo service mongo start
  [sudo] password for thiago: 
  Redirecting to /bin/systemctl start  mongo.service
  Failed to issue method call: Unit mongo.service failed to load: No such file or directory. See system logs and 'systemctl status mongo.service' for details.
  
  [thiago@netbox mongoExample]$ systemctl status mongo.service
  mongo.service
     Loaded: error (Reason: No such file or directory)
     Active: inactive (dead)
  </code></pre>
  
  <p>I tried following their documentation (<a href="http://docs.mongodb.org/manual/tutorial/install-mongodb-on-red-hat-centos-or-fedora-linux/" rel="nofollow">http://docs.mongodb.org/manual/tutorial/install-mongodb-on-red-hat-centos-or-fedora-linux/</a>) with no luck.  </p>
  
  <p>I appreciate any help.  Thanks in advance!</p>