terraform/website/source/layouts/kubernetes.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("docs-home") %>>
          <a href="/docs/providers/index.html">All Providers</a>
        </li>

        <li<%= sidebar_current("docs-kubernetes-index") %>>
          <a href="/docs/providers/kubernetes/index.html">Kubernetes Provider</a>
        </li>

        <li<%= sidebar_current("docs-kubernetes-resource") %>>
          <a href="#">Resources</a>
          <ul class="nav nav-visible">
            <li<%= sidebar_current("docs-kubernetes-resource-config-map") %>>
              <a href="/docs/providers/kubernetes/r/config_map.html">kubernetes_config_map</a>
            </li>
            <li<%= sidebar_current("docs-kubernetes-resource-namespace") %>>
              <a href="/docs/providers/kubernetes/r/namespace.html">kubernetes_namespace</a>
            </li>
            <li<%= sidebar_current("docs-kubernetes-resource-persistent-volume") %>>
              <a href="/docs/providers/kubernetes/r/persistent_volume.html">kubernetes_persistent_volume</a>
            </li>
            <li<%= sidebar_current("docs-kubernetes-resource-secret") %>>
                            <a href="/docs/providers/kubernetes/r/secret.html">kubernetes_secret</a>
                        </li>
          </ul>
        </li>
      </ul>
    </div>
  <% end %>

  <%= yield %>
<% end %>