local overrideSeries = function(series, override)
  g.panel.timeSeries.fieldOverride.byName.new(series)
  + g.panel.timeSeries.fieldOverride.byName.withProperty(
    'displayName',
    override
  );

{
  timeSeries: {
    local timeSeries = g.panel.timeSeries,
    local stat = g.panel.stat,
    local fieldOverride = g.panel.timeSeries.fieldOverride,
    local custom = timeSeries.fieldConfig.defaults.custom,

               "expr": "sum by (tag) (istio_build{component=\"ztunnel\"})",
               "legendFormat": "Version ({{tag}})"
            }
         ],
         "title": "Ztunnel Versions",
         "type": "timeseries"
      },
      {
         "datasource": {
            "type": "datasource",
            "uid": "-- Mixed --"
         },
         "description": "Memory usage of each running instance",

    + row.withPanels([
      panels.timeSeries.simple('Pilot Versions', queries.istioBuild, 'Version number of each running instance'),
    ]),
  ], panelHeight=5)
  + grid.makeGrid([
    row.new('Resource Usage')
    + row.withPanels([
      panels.timeSeries.bytes('Memory Usage', queries.goMemoryUsage, 'Memory usage of each running instance'),

          "format": "time_series",
          "hide": false,
          "instant": false,
          "interval": "",
          "intervalFactor": 1,
          "legendFormat": "{{server}}",
          "metric": "process_start_time_seconds",
          "refId": "A",
          "step": 60
        }
      ],
      "title": "Open FDs ",
      "type": "timeseries"
    },
    {
      "datasource": {

      panels.timeSeries.connections('Connections', queries.connections, 'Connections opened and closed per instance'),
      panels.timeSeries.bytesRate('Bytes Transmitted', queries.bytes, 'Bytes sent and received per instance'),
      panels.timeSeries.dns('DNS Request', queries.dns, 'DNS queries received per instance'),
    ]),
    row.new('Operations')
    + row.withPanels([
      panels.timeSeries.base(

    + row.withPanels([
      panels.timeSeries.statRps('Traffic Volume', queries.globalRequest, 'Total requests in the cluster'),
      panels.timeSeries.statPercent('Success Rate', queries.globalRequestSuccessRate, 'Total success rate of requests in the cluster'),
      panels.timeSeries.statRps('4xxs', queries.globalRequest4xx, 'Total 4xx requests in in the cluster'),

          "interval": "",
          "legendFormat": "Free [{{drive}}]",
          "refId": "C"
        }
      ],
      "title": "Drive Usage",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${DS_PROMETHEUS}"
      },
      "description": "",
      "fieldConfig": {
        "defaults": {

          "format": "time_series",
          "hide": false,
          "intervalFactor": 1,
          "legendFormat": "P99",
          "refId": "C"
        }
      ],
      "title": "Request Duration",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"

          "format": "time_series",
          "intervalFactor": 1,
          "legendFormat": "istio-proxy",
          "refId": "B"
        }
      ],
      "title": "vCPU / 1k rps",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },

          "format": "time_series",
          "hide": false,
          "intervalFactor": 1,
          "legendFormat": "P99",
          "refId": "C"
        }
      ],
      "title": "Client Request Duration",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"