title: Troubleshooting "No such file or directory" when running `php app/console doctrine:schema:create`
body: <p>I am new to Symfony2 (beta4) and Doctrine and am having issues when i try to create the DB schema via command line.</p>
  
  <p>Here's the error:</p>
  
  <pre><code>$ php app/console doctrine:schema:create
  
  Creating database schema...
  
  [PDOException]                                    
  SQLSTATE[HY000] [2002] No such file or directory  
  
  [ErrorException]                                                                                          
  Warning: PDO::__construct(): [2002] No such file or directory (trying to connect via unix:///var/mysql/mysql.sock) 
  in /Applications/MAMP/htdocs/sf-test-2/vendor/doctrine-dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php line 36
  </code></pre>
  
  <p>The mysql database settings are correctly inserted in the config/parameters.ini file.</p>
  
  <p>And here's the Doctrine configuration in config.yml</p>
  
  <pre><code># Doctrine Configuration
  doctrine:
      dbal:
          driver:   %database_driver%
          host:     %database_host%
          dbname:   %database_name%
          user:     %database_user%
          password: %database_password%
  
      orm:
          auto_generate_proxy_classes: %kernel.debug%
          auto_mapping: true
  </code></pre>
  
  <p>And the entity (i made only one to test it)</p>
  
  <pre><code>&lt;?php
  // src/Acme/NewsBundle/Entity/Article.php
  namespace Acme\NewsBundle\Entity;
  
  use Doctrine\ORM\Mapping as ORM;
  
  /**
   * @ORM\Entity
   * @ORM\Table(name="articles")
   */
  class Article
  {
      /**
       * @ORM\Id
       * @ORM\Column(type="integer")
       * @ORM\GeneratedValue(strategy="AUTO")
       */
  protected $id;
  
  /**
   * @ORM\Column(type="string", length="255")
   */
  protected $title;
  
  /**
   * @ORM\Column(type="text")
   */
  protected $body;
  
  /**
   * @ORM\Column(type="string", length="255")
   */
  protected $author;
  
  /**
   * @ORM\Column(type="date")
   */
  protected $date;
  }
  ?&gt;
  </code></pre>