portainer/app/docker/views/swarm/swarm.html

<rd-header>
  <rd-header-title title-text="Cluster overview">
    <a data-toggle="tooltip" title="Refresh" ui-sref="docker.swarm" ui-sref-opts="{reload: true}">
      <i class="fa fa-sync" aria-hidden="true"></i>
    </a>
  </rd-header-title>
  <rd-header-content>Swarm</rd-header-content>
</rd-header>

<div class="row">
  <div class="col-sm-12">
    <rd-widget>
      <rd-widget-header icon="fa-object-group" title-text="Cluster status"></rd-widget-header>
      <rd-widget-body classes="no-padding">
        <table class="table">
          <tbody>
            <tr>
              <td>Nodes</td>
              <td>{{ info.Swarm.Nodes }}</td>
            </tr>
            <tr>
              <td>Docker API version</td>
              <td>{{ docker.ApiVersion }}</td>
            </tr>
            <tr>
              <td>Total CPU</td>
              <td>{{ totalCPU }}</td>
            </tr>
            <tr>
              <td>Total memory</td>
              <td>{{ totalMemory|humansize: 2 }}</td>
            </tr>
            <tr>
              <td colspan="2">
                <div class="btn-group" role="group" aria-label="...">
                  <a ui-sref="docker.swarm.visualizer"><i class="fa fa-object-group space-right" aria-hidden="true"></i>Go to cluster visualizer</a>
                </div>
              </td>
            </tr>
          </tbody>
        </table>
      </rd-widget-body>
    </rd-widget>
  </div>
</div>

<div class="row">
  <div class="col-sm-12">
    <nodes-datatable
    title-text="Nodes" title-icon="fa-hdd"
    dataset="nodes" table-key="nodes"
    order-by="Hostname" 
    show-ip-address-column="applicationState.endpoint.apiVersion >= 1.25"
    access-to-node-details="!applicationState.application.authentication || isAdmin"
    refresh-callback="getNodes"
    ></nodes-datatable>
  </div>
</div>