{
  "title": "Хост и контейнеры",
  "description": "CPU/RAM/диск/сеть хоста (node-exporter) и разбивка по контейнерам (cAdvisor) — профиль compose monitoring. Пороги на панелях согласованы с deploy/monitoring/alerts.yml (группа vidconf-host).",
  "uid": "vidconf-host",
  "editable": false,
  "timezone": "browser",
  "schemaVersion": 39,
  "version": 1,
  "time": { "from": "now-6h", "to": "now" },
  "refresh": "30s",
  "tags": ["vidconf", "host"],
  "panels": [
    {
      "id": 1,
      "title": "Загрузка CPU",
      "description": "100 - idle, усреднено по всем ядрам. Порог алерта HostCpuHigh — 90% дольше 15 минут, см. alerts.yml.",
      "type": "timeseries",
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 0 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": {
        "defaults": { "unit": "percent", "max": 100, "min": 0, "custom": { "drawStyle": "line", "fillOpacity": 10 } },
        "overrides": []
      },
      "targets": [
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "expr": "100 - (avg(rate(node_cpu_seconds_total{mode=\"idle\"}[5m])) * 100)",
          "legendFormat": "CPU busy",
          "refId": "A"
        }
      ]
    },
    {
      "id": 2,
      "title": "Load average",
      "description": "node_load1/5/15 — на 4-ядерном сервере устойчивое значение выше ~4 означает очередь на CPU.",
      "type": "timeseries",
      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 0 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": {
        "defaults": { "custom": { "drawStyle": "line", "fillOpacity": 5 } },
        "overrides": []
      },
      "targets": [
        { "datasource": { "type": "prometheus", "uid": "prometheus" }, "expr": "node_load1", "legendFormat": "1 мин", "refId": "A" },
        { "datasource": { "type": "prometheus", "uid": "prometheus" }, "expr": "node_load5", "legendFormat": "5 мин", "refId": "B" },
        { "datasource": { "type": "prometheus", "uid": "prometheus" }, "expr": "node_load15", "legendFormat": "15 мин", "refId": "C" }
      ]
    },
    {
      "id": 3,
      "title": "Использование RAM",
      "description": "(1 - MemAvailable/MemTotal) — MemAvailable уже учитывает легко освобождаемый page cache/buffers. Порог алерта HostMemoryLow — доступно <10% дольше 10 минут, см. alerts.yml.",
      "type": "timeseries",
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 8 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": {
        "defaults": { "unit": "percent", "max": 100, "min": 0, "custom": { "drawStyle": "line", "fillOpacity": 10 } },
        "overrides": []
      },
      "targets": [
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "expr": "(1 - node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes) * 100",
          "legendFormat": "RAM used",
          "refId": "A"
        }
      ]
    },
    {
      "id": 4,
      "title": "Своп (использовано)",
      "description": "SwapTotal - SwapFree. На этом сервере swap не заведён под мониторинг отдельным алертом — рост от нуля сам по себе сигнал, что памяти уже не хватает (см. HostMemoryLow).",
      "type": "timeseries",
      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 8 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": {
        "defaults": { "unit": "decbytes", "custom": { "drawStyle": "line", "fillOpacity": 10 } },
        "overrides": []
      },
      "targets": [
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "expr": "node_memory_SwapTotal_bytes - node_memory_SwapFree_bytes",
          "legendFormat": "swap used",
          "refId": "A"
        }
      ]
    },
    {
      "id": 5,
      "title": "Свободно на диске (/)",
      "description": "node_filesystem_avail_bytes для корня. Порог алерта HostDiskLow — <10% (≈5 ГБ из 50 ГБ) дольше 15 минут.",
      "type": "stat",
      "gridPos": { "h": 4, "w": 6, "x": 0, "y": 16 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": {
        "defaults": {
          "unit": "decbytes",
          "thresholds": { "mode": "absolute", "steps": [{ "color": "red", "value": null }, { "color": "green", "value": 5368709120 }] }
        },
        "overrides": []
      },
      "targets": [
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "expr": "node_filesystem_avail_bytes{mountpoint=\"/\",fstype!=\"tmpfs\"}",
          "refId": "A"
        }
      ]
    },
    {
      "id": 6,
      "title": "RAM сейчас, %",
      "description": "Текущий снимок панели «Использование RAM». Порог совпадает с HostMemoryLow (used > 90%).",
      "type": "stat",
      "gridPos": { "h": 4, "w": 6, "x": 6, "y": 16 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": {
        "defaults": {
          "unit": "percent",
          "thresholds": { "mode": "absolute", "steps": [{ "color": "green", "value": null }, { "color": "red", "value": 90 }] }
        },
        "overrides": []
      },
      "targets": [
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "expr": "(1 - node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes) * 100",
          "refId": "A"
        }
      ]
    },
    {
      "id": 7,
      "title": "Диск сейчас, %",
      "description": "Текущий снимок использования корневого раздела. Порог совпадает с HostDiskLow (used > 90%).",
      "type": "stat",
      "gridPos": { "h": 4, "w": 6, "x": 12, "y": 16 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": {
        "defaults": {
          "unit": "percent",
          "thresholds": { "mode": "absolute", "steps": [{ "color": "green", "value": null }, { "color": "red", "value": 90 }] }
        },
        "overrides": []
      },
      "targets": [
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "expr": "(1 - node_filesystem_avail_bytes{mountpoint=\"/\",fstype!=\"tmpfs\"} / node_filesystem_size_bytes{mountpoint=\"/\",fstype!=\"tmpfs\"}) * 100",
          "refId": "A"
        }
      ]
    },
    {
      "id": 8,
      "title": "CPU сейчас, %",
      "description": "Текущий снимок загрузки CPU. Порог совпадает с HostCpuHigh (>90%).",
      "type": "stat",
      "gridPos": { "h": 4, "w": 6, "x": 18, "y": 16 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": {
        "defaults": {
          "unit": "percent",
          "thresholds": { "mode": "absolute", "steps": [{ "color": "green", "value": null }, { "color": "red", "value": 90 }] }
        },
        "overrides": []
      },
      "targets": [
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "expr": "100 - (avg(rate(node_cpu_seconds_total{mode=\"idle\"}[5m])) * 100)",
          "refId": "A"
        }
      ]
    },
    {
      "id": 9,
      "title": "Сетевой трафик",
      "description": "rx/tx по физическим интерфейсам хоста (исключены lo/veth/docker/br — это внутренние интерфейсы контейнеров, а не реальный сетевой трафик сервера).",
      "type": "timeseries",
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 20 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": {
        "defaults": { "unit": "Bps", "custom": { "drawStyle": "line", "fillOpacity": 5 } },
        "overrides": []
      },
      "targets": [
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "expr": "rate(node_network_receive_bytes_total{device!~\"lo|veth.*|docker.*|br-.*\"}[5m])",
          "legendFormat": "rx {{device}}",
          "refId": "A"
        },
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "expr": "rate(node_network_transmit_bytes_total{device!~\"lo|veth.*|docker.*|br-.*\"}[5m])",
          "legendFormat": "tx {{device}}",
          "refId": "B"
        }
      ]
    },
    {
      "id": 10,
      "title": "Топ контейнеров по CPU",
      "description": "Источник — cAdvisor (job cadvisor). Отвечает на вопрос «кто из контейнеров грузит CPU» при срабатывании HostCpuHigh.",
      "type": "timeseries",
      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 20 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": {
        "defaults": { "unit": "percentunit", "custom": { "drawStyle": "line", "fillOpacity": 10, "stacking": { "mode": "normal" } } },
        "overrides": []
      },
      "targets": [
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "expr": "topk(5, sum by (name) (rate(container_cpu_usage_seconds_total{name!=\"\"}[5m])))",
          "legendFormat": "{{name}}",
          "refId": "A"
        }
      ]
    },
    {
      "id": 11,
      "title": "Топ контейнеров по памяти",
      "description": "container_memory_working_set_bytes — это то, что реально учитывает cgroup OOM killer (в отличие от RSS), источник — cAdvisor.",
      "type": "timeseries",
      "gridPos": { "h": 8, "w": 24, "x": 0, "y": 28 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": {
        "defaults": { "unit": "decbytes", "custom": { "drawStyle": "line", "fillOpacity": 10, "stacking": { "mode": "normal" } } },
        "overrides": []
      },
      "targets": [
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "expr": "topk(5, container_memory_working_set_bytes{name!=\"\"})",
          "legendFormat": "{{name}}",
          "refId": "A"
        }
      ]
    }
  ]
}