ighter-rouge">gelf</code></li>
  <li><code class="highlighter-rouge">host</code> - <code class="highlighter-rouge">string</code> (defaults to <code class="highlighter-rouge">localhost</code>) - the gelf server hostname</li>
  <li><code class="highlighter-rouge">port</code> - <code class="highlighter-rouge">integer</code> (defaults to <code class="highlighter-rouge">12201</code>) - the port the gelf server is listening on</li>
  <li><code class="highlighter-rouge">hostname</code> - <code class="highlighter-r