env.php

<?php
if (!empty($_ENV)) {
  // Add the URL only on Pantheon sites.
  $conf['logs_http_url'] = 'Your-Loggly-URL';
  
  // Inject the site name and environment. This will result for example with ``my_site-live``
  $conf['logs_http_uuid'] = $_ENV['PANTHEON_SITE_NAME'] . '-' . $_ENV['PANTHEON_ENVIRONMENT'];
}