librenms-librenms/html/pages/device/apps/drbd.inc.php

<?php

echo '<h2>'.$app['app_instance'].'</h2>';

$graphs = array(
    'drbd_network_bits' => 'Network Traffic',
    'drbd_disk_bits'    => 'Disk Traffic',
    'drbd_unsynced'     => 'Unsynced Data',
    'drbd_queue'        => 'Queues',
);

foreach ($graphs as $key => $text) {
    $graph_array['height'] = '100';
    $graph_array['width']  = '215';
    $graph_array['to']     = $config['time']['now'];
    $graph_array['id']     = $app['app_id'];
    $graph_array['type']   = 'application_'.$key;

    echo '<div class="panel panel-default">
    <div class="panel-heading">
        <h3 class="panel-title">'.$text.'</h3>
    </div>
    <div class="panel-body">
    <div class="row">';
    include 'includes/print-graphrow.inc.php';
    echo '</div>';
    echo '</div>';
    echo '</div>';
}