gluster-web-interface/app/views/partials/_topnav.html.erb

<!-- top navigation -->
<div class="top_nav">
    <div class="nav_menu">
        <nav class="" role="navigation">
            <div class="nav toggle">
                <a id="menu_toggle"><i class="fa fa-bars"></i></a>
            </div>

            <ul class="nav navbar-nav navbar-right">
                <li class="">
                    <a href="javascript:;" class="user-profile" aria-expanded="false">
                        <span class="glyphicon glyphicon-user" aria-hidden="true"></span>
                        Hello, <%= current_user.username %> admin!
                    </a>
                </li>
            </ul>
        </nav>
    </div>

</div>
<!-- /top navigation -->