clickhouse指标上报prometheus对接grafana

环境准备

首选，你需要一个kubernetes环境。

然后，在kubernetes环境上搭建prometheus和grafana。

详情见如下三篇文章

Kubernetes 、Docker环境搭建

prometheus安装教程

grafana安装教程

部署depolement

depolement.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: clickhouse-exporter-1
  namespace: clickhouse-exporter
spec:
  selector:
    matchLabels:
      app: clickhouse-exporter-1
  replicas: 1
  template:
    metadata:
      labels:
        app: clickhouse-exporter-1
    spec:
      imagePullSecrets:
      - name: harbor-regsecret
      containers:
      - name: clickhouse-exporter-1
        image: f1yegor/clickhouse-exporter
        command: ["/usr/local/bin/clickhouse_exporter"]
        args: ["-scrape_uri=http://ch1.my.host.net:12123"]
        ports:
        - containerPort: 9116
        resources:
         requests:
          cpu: "1000m"
          memory: "1000Mi"
         limits:
          cpu: "1000m"
          memory: "1000Mi"

如果你有多个ch，那么每个ch需要对应一个exporter，文件中的name需要修改。
如下：

apiVersion: apps/v1
kind: Deployment
metadata:
  name: clickhouse-exporter-2
  namespace: clickhouse-exporter
spec:
  selector:
    matchLabels:
      app: clickhouse-exporter-2
  replicas: 1
  template:
    metadata:
      labels:
        app: clickhouse-exporter-2
    spec:
      imagePullSecrets:
      - name: harbor-regsecret
      containers:
      - name: clickhouse-exporter-2
        image: f1yegor/clickhouse-exporter
        command: ["/usr/local/bin/clickhouse_exporter"]
        args: ["-scrape_uri=http://ch2.my.host.net:12123"]
        ports:
        - containerPort: 9116
        resources:
         requests:
          cpu: "1000m"
          memory: "1000Mi"
         limits:
          cpu: "1000m"
          memory: "1000Mi"

暴露服务

service.yaml

apiVersion: v1
kind: Service
metadata:
  name: clickhouse-exporter-1
  namespace: clickhouse-exporter
  labels:
    app: clickhouse-exporter-1
spec:
  selector:
    app: clickhouse-exporter-1
  ports:
    - name: clickhouse-exporter-1
      port: 9116
      targetPort: 9116

主要是通过clusterIp的方式暴露服务，当时可以选择nodePort，弊端是

• 安全组不允许
• 需要为每个服务另外开启一个端口，不方便

因此采用ClusterIp的方式暴露，因为prometheus也是部署在同一个kubernetes环境，可以通过FQDN的形式访问。

注意，服务的selector需要与deployment中的对应。

如果需要对用的是clickhouse-exporter-2，service需要改为

service.yaml

apiVersion: v1
kind: Service
metadata:
  name: clickhouse-exporter-2
  namespace: clickhouse-exporter
  labels:
    app: clickhouse-exporter-2
spec:
  selector:
    app: clickhouse-exporter-2
  ports:
    - name: clickhouse-exporter-2
      port: 9116
      targetPort: 9116

那么FQDN的方式是通过clickhouse-exporter-1.clickhouse-exporter.svc.cluster.local:9116的方式访问。

service name.name space.svc.cluster.local:port

prometheus的配置增加target

- job_name: 'ch-live'
      static_configs:
      - targets: ['clickhouse-exporter-1.clickhouse-exporter.svc.cluster.local:9116']
        labels:
          instance: '机器ip1'
      - targets: ['clickhouse-exporter-2.clickhouse-exporter.svc.cluster.local:9116']
        labels:
          instance: '机器ip2'

配置grafana

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "description": "Clickhouse metrics",
  "editable": true,
  "gnetId": 882,
  "graphTooltip": 1,
  "id": 21,
  "iteration": 1587906129628,
  "links": [],
  "panels": [
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "$datasource",
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
        "h": 8,
        "w": 12,
        "x": 0,
        "y": 0
      },
      "hiddenSeries": false,
      "id": 13,
      "legend": {
        "alignAsTable": true,
        "avg": true,
        "current": false,
        "max": true,
        "min": false,
        "rightSide": true,
        "show": true,
        "sort": "max",
        "sortDesc": true,
        "total": false,
        "values": true
      },
      "lines": true,
      "linewidth": 1,
      "nullPointMode": "null",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 2,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "sum(rate(clickhouse_file_open_total[5m])) by (instance)",
          "intervalFactor": 5,
          "legendFormat": "{{instance}}",
          "refId": "A"
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "clickhouse_file_open_total",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "$datasource",
      "editable": true,
      "error": false,
      "fill": 1,
      "fillGradient": 0,
      "grid": {},
      "gridPos": {
        "h": 8,
        "w": 12,
        "x": 12,
        "y": 0
      },
      "hiddenSeries": false,
      "id": 1,
      "isNew": true,
      "legend": {
        "alignAsTable": true,
        "avg": true,
        "current": false,
        "hideEmpty": true,
        "hideZero": true,
        "max": true,
        "min": false,
        "rightSide": false,
        "show": true,
        "total": false,
        "values": true
      },
      "lines": true,
      "linewidth": 2,
      "links": [],
      "nullPointMode": "connected",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 5,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": true,
      "steppedLine": false,
      "targets": [
        {
          "expr": "sum(rate(clickhouse_query_total[1m])) by (instance)",
          "intervalFactor": 4,
          "legendFormat": "{{instance}}",
          "refId": "A",
          "step": 10
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Query",
      "tooltip": {
        "msResolution": false,
        "shared": true,
        "sort": 0,
        "value_type": "cumulative"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "$datasource",
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
        "h": 10,
        "w": 24,
        "x": 0,
        "y": 8
      },
      "hiddenSeries": false,
      "id": 16,
      "legend": {
        "alignAsTable": true,
        "avg": true,
        "current": false,
        "max": true,
        "min": false,
        "rightSide": true,
        "show": true,
        "sort": "max",
        "sortDesc": true,
        "total": false,
        "values": true
      },
      "lines": true,
      "linewidth": 1,
      "nullPointMode": "null",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 2,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "sum(rate(clickhouse_inserted_rows_total[30s])) by (instance)",
          "intervalFactor": 5,
          "legendFormat": "{{instance}}",
          "refId": "A"
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "inserted_rows_total  1s",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "$datasource",
      "editable": true,
      "error": false,
      "fill": 1,
      "fillGradient": 0,
      "grid": {},
      "gridPos": {
        "h": 7,
        "w": 12,
        "x": 0,
        "y": 18
      },
      "hiddenSeries": false,
      "id": 10,
      "isNew": true,
      "legend": {
        "alignAsTable": true,
        "avg": true,
        "current": true,
        "hideEmpty": true,
        "hideZero": true,
        "max": true,
        "min": false,
        "show": true,
        "total": false,
        "values": true
      },
      "lines": true,
      "linewidth": 2,
      "links": [],
      "nullPointMode": "null",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 5,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "clickhouse_memory_tracking",
          "intervalFactor": 2,
          "legendFormat": "{{instance}}",
          "refId": "A",
          "step": 10
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Memory",
      "tooltip": {
        "msResolution": false,
        "shared": true,
        "sort": 0,
        "value_type": "cumulative"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "bytes",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "$datasource",
      "editable": true,
      "error": false,
      "fill": 1,
      "fillGradient": 0,
      "grid": {},
      "gridPos": {
        "h": 7,
        "w": 12,
        "x": 12,
        "y": 18
      },
      "hiddenSeries": false,
      "id": 4,
      "isNew": true,
      "legend": {
        "alignAsTable": true,
        "avg": true,
        "current": false,
        "hideEmpty": true,
        "hideZero": true,
        "max": true,
        "min": false,
        "rightSide": false,
        "show": true,
        "sort": "max",
        "sortDesc": true,
        "total": false,
        "values": true
      },
      "lines": true,
      "linewidth": 2,
      "links": [],
      "nullPointMode": "connected",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 5,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "clickhouse_read",
          "hide": true,
          "intervalFactor": 2,
          "legendFormat": "read_{{instance}}",
          "refId": "A",
          "step": 10
        },
        {
          "expr": "clickhouse_write",
          "intervalFactor": 2,
          "legendFormat": "write_{{instance}}",
          "refId": "B",
          "step": 10
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Read/Write",
      "tooltip": {
        "msResolution": false,
        "shared": true,
        "sort": 0,
        "value_type": "cumulative"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "$datasource",
      "editable": true,
      "error": false,
      "fill": 1,
      "fillGradient": 0,
      "grid": {},
      "gridPos": {
        "h": 7,
        "w": 12,
        "x": 0,
        "y": 25
      },
      "hiddenSeries": false,
      "id": 9,
      "isNew": true,
      "legend": {
        "alignAsTable": true,
        "avg": true,
        "current": true,
        "hideEmpty": true,
        "hideZero": true,
        "max": false,
        "min": false,
        "show": true,
        "sort": "current",
        "sortDesc": true,
        "total": false,
        "values": true
      },
      "lines": true,
      "linewidth": 2,
      "links": [],
      "nullPointMode": "connected",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 5,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "sum(clickhouse_query_thread) by (instance)",
          "intervalFactor": 2,
          "legendFormat": "{{instance}}",
          "refId": "A",
          "step": 10
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Query Thread",
      "tooltip": {
        "msResolution": false,
        "shared": true,
        "sort": 0,
        "value_type": "cumulative"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "$datasource",
      "editable": true,
      "error": false,
      "fill": 1,
      "fillGradient": 0,
      "grid": {},
      "gridPos": {
        "h": 7,
        "w": 12,
        "x": 12,
        "y": 25
      },
      "hiddenSeries": false,
      "id": 5,
      "isNew": true,
      "legend": {
        "alignAsTable": true,
        "avg": true,
        "current": true,
        "hideEmpty": true,
        "hideZero": true,
        "max": false,
        "min": false,
        "show": true,
        "total": false,
        "values": true
      },
      "lines": true,
      "linewidth": 2,
      "links": [],
      "nullPointMode": "connected",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 5,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "clickhouse_tcp_connection",
          "intervalFactor": 2,
          "legendFormat": "tcp {{instance}}",
          "refId": "A",
          "step": 10
        },
        {
          "expr": "clickhouse_http_connection",
          "intervalFactor": 2,
          "legendFormat": "http {{instance}}",
          "refId": "B",
          "step": 10
        },
        {
          "expr": "clickhouse_interserver_connection",
          "intervalFactor": 2,
          "legendFormat": "interserver",
          "refId": "C",
          "step": 10
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Connections",
      "tooltip": {
        "msResolution": false,
        "shared": true,
        "sort": 0,
        "value_type": "cumulative"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "$datasource",
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
        "h": 10,
        "w": 12,
        "x": 0,
        "y": 32
      },
      "hiddenSeries": false,
      "id": 15,
      "legend": {
        "alignAsTable": true,
        "avg": true,
        "current": false,
        "max": true,
        "min": false,
        "rightSide": false,
        "show": true,
        "sort": "max",
        "sortDesc": true,
        "total": false,
        "values": true
      },
      "lines": true,
      "linewidth": 1,
      "nullPointMode": "null",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 2,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "sum(clickhouse_table_parts_count) by (database,table)",
          "intervalFactor": 5,
          "legendFormat": "{{database}}.{{table}}",
          "refId": "A"
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Part number",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "$datasource",
      "editable": true,
      "error": false,
      "fill": 1,
      "fillGradient": 0,
      "grid": {},
      "gridPos": {
        "h": 10,
        "w": 12,
        "x": 12,
        "y": 32
      },
      "hiddenSeries": false,
      "id": 2,
      "isNew": true,
      "legend": {
        "alignAsTable": true,
        "avg": true,
        "current": false,
        "hideEmpty": true,
        "hideZero": true,
        "max": true,
        "min": false,
        "rightSide": true,
        "show": true,
        "total": false,
        "values": true
      },
      "lines": true,
      "linewidth": 2,
      "links": [],
      "nullPointMode": "null",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 5,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [
        {
          "alias": "/merge.*/",
          "bars": false,
          "lines": true
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