{
  "uid": "cnx-dns",
  "title": "CNX DNS",
  "tags": ["dns", "knot", "cnx"],
  "timezone": "browser",
  "schemaVersion": 39,
  "version": 2,
  "refresh": "30s",
  "time": { "from": "now-6h", "to": "now" },
  "templating": { "list": [] },
  "annotations": { "list": [] },
  "panels": [
    {
      "type": "row",
      "title": "Alerts",
      "id": 11,
      "gridPos": { "h": 1, "w": 24, "x": 0, "y": 0 }
    },
    {
      "type": "table",
      "title": "Active alerts",
      "description": "Firing vmalert alerts (the ALERTS series vmalert writes back to VictoriaMetrics). An empty table means all clear.",
      "id": 12,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 7, "w": 24, "x": 0, "y": 1 },
      "options": { "showHeader": true },
      "fieldConfig": {
        "defaults": { "custom": { "align": "auto" } },
        "overrides": []
      },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "ALERTS{alertstate=\"firing\"}",
          "format": "table",
          "instant": true
        }
      ],
      "transformations": [
        {
          "id": "organize",
          "options": {
            "excludeByName": {
              "Time": true,
              "Value": true,
              "__name__": true,
              "alertstate": true
            }
          }
        }
      ]
    },
    {
      "type": "row",
      "title": "DNS / Zones",
      "id": 1,
      "gridPos": { "h": 1, "w": 24, "x": 0, "y": 8 }
    },
    {
      "type": "table",
      "title": "Zone SOA serial (per nameserver)",
      "description": "ns1 and ns2 should report the same serial per zone. A divergence here is the secondary-out-of-sync condition.",
      "id": 2,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 9 },
      "options": { "showHeader": true },
      "fieldConfig": {
        "defaults": { "custom": { "align": "auto" } },
        "overrides": []
      },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "knot_zone_serial",
          "format": "table",
          "instant": true,
          "legendFormat": "{{zone}} @ {{instance}}"
        }
      ]
    },
    {
      "type": "timeseries",
      "title": "Seconds until zone expiry",
      "description": "On secondaries this counts down between successful transfers; a steady decline toward zero means transfers are failing.",
      "id": 3,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 9 },
      "fieldConfig": { "defaults": { "unit": "s" }, "overrides": [] },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "knot_zone_status_expiration",
          "legendFormat": "{{zone}} @ {{instance}}"
        }
      ]
    },
    {
      "type": "timeseries",
      "title": "Query rate by nameserver",
      "id": 4,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 17 },
      "fieldConfig": { "defaults": { "unit": "qps" }, "overrides": [] },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "sum by (instance) (rate(knot_stats_request_protocol_total[5m]))",
          "legendFormat": "{{instance}}"
        }
      ]
    },
    {
      "type": "timeseries",
      "title": "Response codes",
      "id": 5,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 17 },
      "fieldConfig": { "defaults": { "unit": "qps" }, "overrides": [] },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "sum by (type) (rate(knot_stats_response_code_total[5m]))",
          "legendFormat": "{{type}}"
        }
      ]
    },
    {
      "type": "row",
      "title": "Hosts",
      "id": 6,
      "gridPos": { "h": 1, "w": 24, "x": 0, "y": 25 }
    },
    {
      "type": "timeseries",
      "title": "CPU busy %",
      "id": 7,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 26 },
      "fieldConfig": {
        "defaults": { "unit": "percent", "min": 0, "max": 100 },
        "overrides": []
      },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "100 - (avg by (instance) (rate(node_cpu_seconds_total{mode=\"idle\"}[5m])) * 100)",
          "legendFormat": "{{instance}}"
        }
      ]
    },
    {
      "type": "timeseries",
      "title": "Memory used %",
      "id": 8,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 26 },
      "fieldConfig": {
        "defaults": { "unit": "percent", "min": 0, "max": 100 },
        "overrides": []
      },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "100 * (1 - node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes)",
          "legendFormat": "{{instance}}"
        }
      ]
    },
    {
      "type": "timeseries",
      "title": "Root filesystem used %",
      "id": 9,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 34 },
      "fieldConfig": {
        "defaults": { "unit": "percent", "min": 0, "max": 100 },
        "overrides": []
      },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "100 * (1 - node_filesystem_avail_bytes{mountpoint=\"/\",fstype!=\"tmpfs\"} / node_filesystem_size_bytes{mountpoint=\"/\",fstype!=\"tmpfs\"})",
          "legendFormat": "{{instance}}"
        }
      ]
    },
    {
      "type": "timeseries",
      "title": "Load average (1m)",
      "id": 10,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 34 },
      "fieldConfig": { "defaults": { "unit": "short" }, "overrides": [] },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "node_load1",
          "legendFormat": "{{instance}}"
        }
      ]
    }
  ]
}