title: No log messages in production.log
body: <p>I wrote a demo HelloWorld Rails app and tested it with WEBrick (it doesn't even use a DB, it's just a controller which prints "hello world"). Then I tried to deploy it to a local Apache powered with Passenger. In fact this test is just to get Passenger working (it's my first deploy on Apache). Now I'm not even sure that Passenger works, but I don't get any error on the Apache side.</p>
  
  <p>When I fire <code>http://rails.test/</code> the browser shows the Rails 500 error page - so I assume that Passenger works. <strong>I want to investigate the logs, but it happens that production.log is empty!</strong> I don't think it's a permission problem, because if I delete the file, it is recreated when I reload the page. I tried to change the log level in <code>conf/environments/production.rb</code>, tried to manually write to log file with Rails console production and</p>
  
  <pre><code> Rails.logger.error('asdf')
  </code></pre>
  
  <p>it returns <code>true</code> but nothing gets written to production.log. The path (obtained per Rails.logger.inspect) is correct, and I remark that the file is recreated if I manually remove it. How can I know what's going on?</p>
  
  <p><em>(I already checked the Apache logs, plus I set the highest debug level for Passenger but it seems a Rails problem, so is not logged by the server)</em></p>