open-nomad/website/source/layouts/guides.erb

<% wrap_layout :inner do %>
  <% content_for :sidebar do %>
    <div class="docs-sidebar hidden-print affix-top" role="complementary">
      <ul class="nav docs-sidenav">
        <li<%= sidebar_current("guides-cluster") %>>
          <a href="/guides/cluster/bootstrapping.html">Bootstrapping Clusters</a>
          <ul class="nav">
            <li<%= sidebar_current("guides-cluster-automatic") %>>
              <a href="/guides/cluster/automatic.html">Automatic</a>
            </li>
            <li<%= sidebar_current("guides-cluster-manual") %>>
              <a href="/guides/cluster/manual.html">Manual</a>
            </li>
            <li<%= sidebar_current("guides-cluster-federation") %>>
              <a href="/guides/cluster/federation.html">Federation</a>
            </li>
            <li<%= sidebar_current("guides-cluster-requirements") %>>
              <a href="/guides/cluster/requirements.html">Requirements</a>
            </li>
          </ul>
        </li>

        <li<%= sidebar_current("guides-outage-recovery") %>>
          <a href="/guides/outage.html">Outage Recovery</a>
        </li>
      </ul>
    </div>
  <% end %>

  <%= yield %>
<% end %>