Prometheus监控 Redis & Redis Cluster 说明

こ雲淡風輕ζ 提交于 2020-04-24 08:19:22

说明

在前面的Prometheus + Grafana 部署说明之「安装」文章里,大致介绍说明了PrometheusGrafana的一些安装使用,现在开始如何始部署Prometheus+Grafana 来监控Redis

部署

在之前介绍的Prometheus系列文章里,已经了解了Prometheus是通过拉取的方式来保存监控数据的,可以自己写一个服务来去Redis来获取需要监控的相关指标,也可以直接用现成的exporter,如GitHub上redis_exporter,本文对Redis的监控是通过该导出器进行的。

下载&解压:

#下载
wget
https://github.com/oliver006/redis_exporter/releases/download/v1.3.5/redis_exporter-v1.3.5.linux-amd64.tar.gz
#解压
tar xvf redis_exporter-v1.3.5.linux-amd64.tar.gz

注意:redis_exporter 版本从 0.x to 1.x 有了很大的改变:为了使redis_exporter更紧密地遵循“编写导出器的最佳实践”,不再直接支持配置(和抓取)多个Redis实例,而是将这一任务推给了Prometheus服务器,具体情况可以看作者说明。如果需要抓取多个实例,请查看如何配置Prometheus服务器以刮取多个实例

但如果已经按照Prometheus项目的推荐使用了导出器,并且仅scrape了一个实例(例如使用--redis.addr和--redis.password 标志),那么没有任何改变。

准备:

1)在开启redis_exporter [v1.3.5]之前,需要先配置Prometheus,按照Prometheus + Grafana 部署说明之「安装」装好Prometheus之后,修改其配置文件。本次示例是通过文件服务发现来处理的,因为监控服务的同时也要监控系统相关的指标,所以需要node_exporter和redis_exporter。文件发现机制有2种方式:exporter配置可以放到一个文件,也可以为每个实例单独配置文件。如放到一个配置文件:

多实例相同密码的抓取(只需要一个redis-exporter),集群信息:

3节点无从,密码 abc
192.168.163.132、133、134 -- 6379
192.168.163.132、133、134 -- 6380

1.1 exporter配置放到一个文件的相关配置:

prometheus.yml:

global:
  scrape_interval:     10s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute.

alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093

rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

scrape_configs:
  - job_name: 'prometheus'
    static_configs:
    - targets: ['192.168.163.132:9099']

  - job_name: 'node_exporter'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/node/nodes-instances.json
        refresh_interval: 10s
    relabel_configs:
    - action: replace
      source_labels: ['__address__']
      regex: (.*):(.*)
      replacement: $1
      target_label: hostname
    - action: labeldrop
      regex: __meta_filepath

  - job_name: 'redis_exporter'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/redis/redis-instances.json
    metrics_path: /scrape
    relabel_configs:
      - action: replace
        source_labels: ['__address__']
        regex: (.*):(.*)
        replacement: $1
        target_label: hostip
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
         target_label: instance
      - target_label: __address__
        replacement: 192.168.163.132:9123
View Code

nodes-instances.json:

[
  {
    "targets": [ "192.168.163.132:9199", "192.168.163.133:9199","192.168.163.134:9199"]
  }
]
View Code

redis-instances.json:

[
  {
    "targets": [ "192.168.163.132:6379","192.168.163.133:6379","192.168.163.134:6379"],
    "labels":  {"env":"test","cluster":"test_one"}
  },
  {
    "targets": [ "192.168.163.132:6380","192.168.163.133:6380","192.168.163.134:6380"],
    "labels":  {"env":"test","cluster":"test_two"}
  }
]
View Code

以后如果有相关的实例集群包括主从加进来,只要修改以上2个exporter文件即可。最后开启exporter:

#各个节点执行 node-exporter:
./node_exporter --web.listen-address=:9199

#指定节点执行 redis_exporter:
./redis_exporter  -redis-only-metrics  -redis.password abc -web.listen-address=:9123

1.2 exporter配置独立存放的相关配置:

prometheus.yml:

global:
  scrape_interval:     10s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute.

alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093

rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

scrape_configs:
  - job_name: 'prometheus'
    static_configs:
    - targets: ['192.168.163.132:9099']

  - job_name: 'node_exporter'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/node/*.yml
        refresh_interval: 10s
    relabel_configs:
    - action: replace
      source_labels: ['__address__']
      regex: (.*):(.*)
      replacement: $1
      target_label: hostname
    - action: labeldrop
      regex: __meta_filepath

  - job_name: 'redis_exporter'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/redis/*.yml
    metrics_path: /scrape
    relabel_configs:
      - action: replace
        source_labels: ['__address__']
        regex: (.*):(.*)
        replacement: $1
        target_label: hostip
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: 192.168.163.132:9123
View Code

targets/node/*.yml: 

# ls -lh /etc/prometheus/targets/node/*.yml
-rw-r--r-- 1 root root 117 4月  18 14:51 /etc/prometheus/targets/node/test2_node_exporter.yml
-rw-r--r-- 1 root root 117 4月  18 14:51 /etc/prometheus/targets/node/test3_node_exporter.yml
-rw-r--r-- 1 root root 117 4月  18 14:51 /etc/prometheus/targets/node/test4_node_exporter.yml

# cat /etc/prometheus/targets/node/test2_node_exporter.yml 
[
  {
    "targets": ["192.168.163.132:9199"],
    "labels": {"env":"test","alias":"test2"}
  }
]


# cat /etc/prometheus/targets/node/test3_node_exporter.yml 
[
  {
    "targets": ["192.168.163.133:9199"],
    "labels": {"env":"test","alias":"test3"}
  }
]


# cat /etc/prometheus/targets/node/test4_node_exporter.yml 
[
  {
    "targets": ["192.168.163.134:9199"],
    "labels": {"env":"test","alias":"test4"}
  }
]
View Code

targets/redis/*.yml:

# ls -lh /etc/prometheus/targets/redis/*.yml
-rw-r--r-- 1 root root 121 4月  18 13:14 /etc/prometheus/targets/redis/test2_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月  18 13:14 /etc/prometheus/targets/redis/test2_6380_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月  18 13:14 /etc/prometheus/targets/redis/test3_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月  18 13:15 /etc/prometheus/targets/redis/test3_6380_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月  18 13:14 /etc/prometheus/targets/redis/test4_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月  18 13:15 /etc/prometheus/targets/redis/test4_6380_redis_exporter.yml

# cat /etc/prometheus/targets/redis/test2_6379_redis_exporter.yml
[
  {
    "targets": [ "192.168.163.132:6379"],
    "labels":  {"env":"test","cluster":"test_one","alias":"test2"}
  }
]

# cat /etc/prometheus/targets/redis/test3_6379_redis_exporter.yml
[
  {
    "targets": [ "192.168.163.133:6379"],
    "labels":  {"env":"test","cluster":"test_one","alias":"test3"}
  }
]

# cat /etc/prometheus/targets/redis/test4_6379_redis_exporter.yml
[
  {
    "targets": [ "192.168.163.134:6379"],
    "labels":  {"env":"test","cluster":"test_one","alias":"test4"}
  }
]

# cat /etc/prometheus/targets/redis/test2_6380_redis_exporter.yml
[
  {
    "targets": [ "192.168.163.132:6380"],
    "labels":  {"env":"test","cluster":"test_two","alias":"test2"}
  }
]

# cat /etc/prometheus/targets/redis/test3_6380_redis_exporter.yml
[
  {
    "targets": [ "192.168.163.133:6380"],
    "labels":  {"env":"test","cluster":"test_two","alias":"test3"}
  }
]

# cat /etc/prometheus/targets/redis/test4_6380_redis_exporter.yml
[
  {
    "targets": [ "192.168.163.134:6380"],
    "labels":  {"env":"test","cluster":"test_two","alias":"test4"}
  }
]
View Code

以后如果有相关的实例集群加进来包括主从,只要新增2类exporter文件即可。最后开启exporter:

#各个节点执行 node-exporter:
./node_exporter --web.listen-address=:9199

#指定节点执行 redis_exporter:
./redis_exporter  -redis-only-metrics  -redis.password abc -web.listen-address=:9123

以上2种通过文件服务发现的方法,推荐第2个。因为新增的文件有问题也不影响服务,修改文件可能会引发问题;并且也可以为各个节点打需要的labels。

最后配置Grafana,效果:

JSON Model:

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "editable": true,
  "gnetId": null,
  "graphTooltip": 0,
  "id": 13,
  "iteration": 1587194136640,
  "links": [],
  "panels": [
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      "colorBackground": false,
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      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "集群个数",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 0,
        "y": 0
      },
      "id": 8,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
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        {
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      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
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      "prefixFontSize": "50%",
      "rangeMaps": [
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      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(count(redis_up{cluster=~\"$cluster\"}>0) by (cluster))",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
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      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "集群个数",
      "type": "singlestat",
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      "valueMaps": [
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      "datasource": null,
      "description": "集群节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 5,
        "y": 0
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      "id": 4,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
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          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
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      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_up{cluster=~\"$cluster\"})",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
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      ],
      "thresholds": "",
      "timeFrom": null,
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      "title": "集群节点数",
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      "valueFontSize": "100%",
      "valueMaps": [
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      "valueName": "current"
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    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
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      "datasource": null,
      "description": "集群活跃节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
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        "x": 10,
        "y": 0
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      "interval": null,
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      "mappingTypes": [
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      "nullPointMode": "connected",
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      "gauge": {
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      "links": [],
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      "prefixFontSize": "50%",
      "rangeMaps": [
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      "sparkline": {
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        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_instance_info{cluster=~\"$cluster\", role=\"master\"})",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
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      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "主节点个数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
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      "gauge": {
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        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
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        "x": 19,
        "y": 0
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      "interval": null,
      "links": [],
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      "mappingTypes": [
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      "nullPointMode": "connected",
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      "postfixFontSize": "50%",
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      "prefixFontSize": "50%",
      "rangeMaps": [
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      "sparkline": {
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        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_instance_info{cluster=~\"$cluster\", role=\"slave\"})",
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      "valueMaps": [
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          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": null,
      "description": "Redus  Cluster OPS指标",
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
        "h": 8,
        "w": 12,
        "x": 0,
        "y": 3
      },
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      "id": 16,
      "legend": {
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        "current": false,
        "max": false,
        "min": false,
        "show": true,
        "total": false,
        "values": false
      },
      "lines": true,
      "linewidth": 1,
      "nullPointMode": "null",
      "options": {
        "dataLinks": []
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      "percentage": false,
      "pointradius": 2,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "ceil(sum(rate(redis_commands_processed_total{cluster=~\"$cluster\",instance=~\"$master\"}[$interval])) by (cluster))",
          "interval": "5s",
          "legendFormat": "{{cluster}}",
          "refId": "A"
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      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Redis Cluster OPS",
      "tooltip": {
        "shared": true,
        "sort": 0,
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      "type": "graph",
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        "buckets": null,
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        "name": null,
        "show": true,
        "values": []
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          "label": null,
          "logBase": 1,
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          "show": true
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        {
          "format": "short",
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          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
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          {
            "selected": false,
            "text": "6h",
            "value": "6h"
          },
          {
            "selected": false,
            "text": "12h",
            "value": "12h"
          },
          {
            "selected": false,
            "text": "1d",
            "value": "1d"
          }
        ],
        "query": "5s,30s,1m,10m,30m,1h,6h,12h,1d",
        "refresh": 2,
        "skipUrlSync": false,
        "type": "interval"
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_up,cluster)",
        "hide": 0,
        "includeAll": true,
        "index": -1,
        "label": "Cluster",
        "multi": true,
        "name": "cluster",
        "options": [],
        "query": "label_values(redis_up,cluster)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_instance_info,role)",
        "hide": 0,
        "includeAll": true,
        "index": -1,
        "label": "Role",
        "multi": true,
        "name": "role",
        "options": [],
        "query": "label_values(redis_instance_info,role)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_instance_info{cluster=~\"$cluster\",role=~\"$role\"},instance)",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "instance",
        "multi": true,
        "name": "instance",
        "options": [],
        "query": "label_values(redis_instance_info{cluster=~\"$cluster\",role=~\"$role\"},instance)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_instance_info{cluster=~\"$cluster\",role=\"master\"},instance)",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "master",
        "multi": true,
        "name": "master",
        "options": [],
        "query": "label_values(redis_instance_info{cluster=~\"$cluster\",role=\"master\"},instance)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_up{cluster=~\"$cluster\"}, hostip)",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "host",
        "multi": true,
        "name": "host",
        "options": [],
        "query": "label_values(redis_up{cluster=~\"$cluster\"}, hostip)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      }
    ]
  },
  "time": {
    "from": "now-5m",
    "to": "now"
  },
  "timepicker": {
    "refresh_intervals": [
      "5s",
      "10s",
      "30s",
      "1m",
      "5m",
      "15m",
      "30m",
      "1h",
      "2h",
      "1d"
    ]
  },
  "timezone": "",
  "title": "Redis_Cluster_V1.35",
  "uid": "5FfBHG3Zz",
  "variables": {
    "list": []
  },
  "version": 3
}
View Code

②:不同密码多实例抓取,因为使用的是 >1.x 的redis_exporter [v1.3.5],不支持多实例。因为一个export只能指定一个密码,如果想进行多实例不同密码抓取的话,所以需要在Prometheus配置多个redis_exporter,集群信息为:

3节点无从
192.168.163.132、133、134 -- 6379  密码 abc
192.168.163.132、133、134 -- 6380  密码 cba

prometheus.yml:

global:
  scrape_interval:     10s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute.

alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093

rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

scrape_configs:
  - job_name: 'prometheus'
    static_configs:
    - targets: ['192.168.163.132:9099']

  - job_name: 'node_exporter'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/node/*.yml
        refresh_interval: 10s
    relabel_configs:
    - action: replace
      source_labels: ['__address__']
      regex: (.*):(.*)
      replacement: $1
      target_label: hostname
    - action: labeldrop
      regex: __meta_filepath

  - job_name: 'redis_exporter_A'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/redis/A*.yml
    metrics_path: /scrape
    relabel_configs:
      - action: replace
        source_labels: ['__address__']
        regex: (.*):(.*)
        replacement: $1
        target_label: hostip
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: 192.168.163.132:9123

  - job_name: 'redis_exporter_B'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/redis/B*.yml
    metrics_path: /scrape
    relabel_configs:
      - action: replace
        source_labels: ['__address__']
        regex: (.*):(.*)
        replacement: $1
        target_label: hostip
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: 192.168.163.132:9124
View Code

targets/redis/*.yml:

# ls -lh /etc/prometheus/targets/redis/A*.yml
-rw-r--r-- 1 root root 121 4月  18 13:14 /etc/prometheus/targets/redis/Atest2_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月  18 13:14 /etc/prometheus/targets/redis/Atest3_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月  18 13:14 /etc/prometheus/targets/redis/Atest4_6379_redis_exporter.yml

# ls -lh /etc/prometheus/targets/redis/B*.yml
-rw-r--r-- 1 root root 121 4月  18 13:14 /etc/prometheus/targets/redis/Btest2_6380_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月  18 13:15 /etc/prometheus/targets/redis/Btest3_6380_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月  18 13:15 /etc/prometheus/targets/redis/Btest4_6380_redis_exporter.yml

# cat /etc/prometheus/targets/redis/Atest2_6379_redis_exporter.yml
[
  {
    "targets": [ "192.168.163.132:6379"],
    "labels":  {"env":"test","cluster":"test_one","alias":"test2"}
  }
]
# cat /etc/prometheus/targets/redis/Atest3_6379_redis_exporter.yml
[
  {
    "targets": [ "192.168.163.133:6379"],
    "labels":  {"env":"test","cluster":"test_one","alias":"test3"}
  }
]
# cat /etc/prometheus/targets/redis/Atest4_6379_redis_exporter.yml
[
  {
    "targets": [ "192.168.163.134:6379"],
    "labels":  {"env":"test","cluster":"test_one","alias":"test4"}
  }
]
# cat /etc/prometheus/targets/redis/Btest2_6380_redis_exporter.yml 
[
  {
    "targets": [ "192.168.163.132:6380"],
    "labels":  {"env":"test","cluster":"test_two","alias":"test2"}
  }
]
# cat /etc/prometheus/targets/redis/Btest3_6380_redis_exporter.yml 
[
  {
    "targets": [ "192.168.163.133:6380"],
    "labels":  {"env":"test","cluster":"test_two","alias":"test3"}
  }
]
# cat /etc/prometheus/targets/redis/Btest4_6380_redis_exporter.yml 
[
  {
    "targets": [ "192.168.163.134:6380"],
    "labels":  {"env":"test","cluster":"test_two","alias":"test4"}
  }
]
View Code

以后如果有相关的实例集群包括主从加进来,只要新增2类exporter文件即可。最后开启exporter:

#指定节点执行 redis_exporter:
./redis_exporter  -redis-only-metrics  -redis.password abc -web.listen-address=:9123

#指定节点执行 redis_exporter:
./redis_exporter  -redis-only-metrics  -redis.password cba -web.listen-address=:9124

最后配置Grafana,效果和①一样,唯一的区别就是②开多个exporter。这样会导致一个问题:每次增加不同密码的节点都会修改Prometheus配置文件,既不安全也不方便。可以通过下面方法来实现多实例不同密码抓取。按照编写导出器的最佳实践,需要像nodes_exporter一样在不同实例的主机上安装和开启redis_exporter,即为每个redis instance开启一个exporter。集群信息为:

集群1:密码 cc
M: 192.168.163.132:15389 192.168.163.133:15389 192.168.163.134:15389 S: 192.168.163.132:15489 192.168.163.133:15489 192.168.163.134:15489 集群2:密码abc M: 192.168.163.132:6379 192.168.163.133:6379 192.168.163.134:6379 S: 192.168.163.132:6381 192.168.163.133:6381 192.168.163.134:6381

prometheus.yml:

global:
  scrape_interval:     10s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute.

alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093

rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

scrape_configs:
  - job_name: 'prometheus'
    static_configs:
    - targets: ['192.168.163.132:9099']

  - job_name: 'node_exporter'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/node/node*.yml
        refresh_interval: 10s
    relabel_configs:
    - action: replace
      source_labels: ['__address__']
      regex: (.*):(.*)
      replacement: $1
      target_label: hostname
    - action: labeldrop
      regex: __meta_filepath

  - job_name: 'redis_exporter'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/redis/redis*.yml
    relabel_configs:
    - action: replace
      source_labels: ['__address__']
      regex: (.*):(.*)
      replacement: $1
      target_label: hostip
    - action: labeldrop
      regex: __meta_filepath
View Code

targets/redis/redis*.yml

root@test2:/etc/prometheus/targets/redis# ls -lh redis*
-rw-r--r-- 1 prometheus prometheus 117 4月  18 22:02 redis_test2_15389_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月  18 22:05 redis_test2_15489_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月  18 22:02 redis_test3_15389_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月  18 22:05 redis_test3_15489_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月  18 22:03 redis_test4_15389_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月  18 22:05 redis_test4_15489_exporter.yml

root@test2:/etc/prometheus/targets/redis# cat redis_test2_15389_exporter.yml 
[
  {
    "targets": ["192.168.163.132:9121"],
    "labels": {"env":"test","cluster":"test","alias":"test2"}
  }
]


root@test2:/etc/prometheus/targets/redis# cat redis_test3_15389_exporter.yml 
[
  {
    "targets": ["192.168.163.133:9121"],
    "labels": {"env":"test","cluster":"test","alias":"test3"}
  }
]


root@test2:/etc/prometheus/targets/redis# cat redis_test4_15389_exporter.yml 
[
  {
    "targets": ["192.168.163.134:9121"],
    "labels": {"env":"test","cluster":"test","alias":"test4"}
  }
]


root@test2:/etc/prometheus/targets/redis# cat redis_test2_15489_exporter.yml 
[
  {
    "targets": ["192.168.163.132:9122"],
    "labels": {"env":"test","cluster":"test","alias":"test2"}
  }
]


root@test2:/etc/prometheus/targets/redis# cat redis_test3_15489_exporter.yml 
[
  {
    "targets": ["192.168.163.133:9122"],
    "labels": {"env":"test","cluster":"test","alias":"test3"}
  }
]


root@test2:/etc/prometheus/targets/redis# cat redis_test4_15489_exporter.yml 
[
  {
    "targets": ["192.168.163.134:9122"],
    "labels": {"env":"test","cluster":"test","alias":"test4"}
  }
]
View Code

通过文件服务发现,实现动态添加节点(exporter),一个Redis实例一个exporter,这里只开集群1的exporter,即在test2、test3、test4上各开启2个exporter,共6个exporter对应6个Redis实例,配置完成之后,可以直接到各个监控主机上启动redis_exporter

test2:
./redis_exporter  -redis-only-metrics -redis.addr 192.168.163.132:15389 -redis.password cc -web.listen-address=:9121
./redis_exporter  -redis-only-metrics -redis.addr 192.168.163.132:15489 -redis.password cc -web.listen-address=:9122
test3:
./redis_exporter  -redis-only-metrics -redis.addr 192.168.163.133:15389 -redis.password cc -web.listen-address=:9121
./redis_exporter  -redis-only-metrics -redis.addr 192.168.163.133:15489 -redis.password cc -web.listen-address=:9122
test4:
./redis_exporter  -redis-only-metrics -redis.addr 192.168.163.134:15389 -redis.password cc -web.listen-address=:9121
./redis_exporter  -redis-only-metrics -redis.addr 192.168.163.134:15489 -redis.password cc -web.listen-address=:9122

最后配置Grafana,效果:

JSON Model:

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "editable": true,
  "gnetId": null,
  "graphTooltip": 0,
  "id": 13,
  "iteration": 1587219062782,
  "links": [],
  "panels": [
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "集群个数",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 0,
        "y": 0
      },
      "id": 8,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(count(redis_up{cluster=~\"$cluster\"}>0) by (cluster))",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "集群个数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "集群节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 5,
        "y": 0
      },
      "id": 4,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_up{cluster=~\"$cluster\"})",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "集群节点数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "集群活跃节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 4,
        "x": 10,
        "y": 0
      },
      "id": 6,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_up{cluster=~\"$cluster\"}>0)",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "集群活跃节点数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorPrefix": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "主节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 14,
        "y": 0
      },
      "id": 10,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
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      "dashLength": 10,
      "dashes": false,
      "datasource": null,
      "description": "各个节点内存碎片率",
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
        "h": 8,
        "w": 12,
        "x": 12,
        "y": 35
      },
      "hiddenSeries": false,
      "id": 28,
      "legend": {
        "avg": false,
        "current": false,
        "max": false,
        "min": false,
        "show": true,
        "total": false,
        "values": false
      },
      "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": "redis_mem_fragmentation_ratio{instance=~\"$instance\"}",
          "interval": "",
          "legendFormat": "{{instance}}",
          "refId": "A"
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "内存碎片率",
      "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": null,
      "description": "各个节点 的负载",
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
        "h": 8,
        "w": 12,
        "x": 0,
        "y": 43
      },
      "hiddenSeries": false,
      "id": 34,
      "legend": {
        "avg": false,
        "current": false,
        "max": false,
        "min": false,
        "show": true,
        "total": false,
        "values": false
      },
      "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": "node_load1{hostname=~\"$host\"}",
          "interval": "",
          "legendFormat": "{{hostname}}",
          "refId": "A"
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "负载(Load)",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    }
  ],
  "refresh": "5s",
  "schemaVersion": 22,
  "style": "dark",
  "tags": [],
  "templating": {
    "list": [
      {
        "auto": true,
        "auto_count": 100,
        "auto_min": "1s",
        "current": {
          "selected": true,
          "text": "5s",
          "value": "5s"
        },
        "hide": 0,
        "label": "interval",
        "name": "interval",
        "options": [
          {
            "selected": false,
            "text": "auto",
            "value": "$__auto_interval_interval"
          },
          {
            "selected": true,
            "text": "5s",
            "value": "5s"
          },
          {
            "selected": false,
            "text": "30s",
            "value": "30s"
          },
          {
            "selected": false,
            "text": "1m",
            "value": "1m"
          },
          {
            "selected": false,
            "text": "10m",
            "value": "10m"
          },
          {
            "selected": false,
            "text": "30m",
            "value": "30m"
          },
          {
            "selected": false,
            "text": "1h",
            "value": "1h"
          },
          {
            "selected": false,
            "text": "6h",
            "value": "6h"
          },
          {
            "selected": false,
            "text": "12h",
            "value": "12h"
          },
          {
            "selected": false,
            "text": "1d",
            "value": "1d"
          }
        ],
        "query": "5s,30s,1m,10m,30m,1h,6h,12h,1d",
        "refresh": 2,
        "skipUrlSync": false,
        "type": "interval"
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_up,cluster)",
        "hide": 0,
        "includeAll": true,
        "index": -1,
        "label": "Cluster",
        "multi": true,
        "name": "cluster",
        "options": [],
        "query": "label_values(redis_up,cluster)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_instance_info,role)",
        "hide": 0,
        "includeAll": true,
        "index": -1,
        "label": "Role",
        "multi": true,
        "name": "role",
        "options": [],
        "query": "label_values(redis_instance_info,role)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_instance_info{cluster=~\"$cluster\",role=~\"$role\"},instance)",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "instance",
        "multi": true,
        "name": "instance",
        "options": [],
        "query": "label_values(redis_instance_info{cluster=~\"$cluster\",role=~\"$role\"},instance)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_instance_info{cluster=~\"$cluster\",role=\"master\"},instance)",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "master",
        "multi": true,
        "name": "master",
        "options": [],
        "query": "label_values(redis_instance_info{cluster=~\"$cluster\",role=\"master\"},instance)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_up{cluster=~\"$cluster\"}, hostip)",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "host",
        "multi": true,
        "name": "host",
        "options": [],
        "query": "label_values(redis_up{cluster=~\"$cluster\"}, hostip)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      }
    ]
  },
  "time": {
    "from": "now-5m",
    "to": "now"
  },
  "timepicker": {
    "refresh_intervals": [
      "5s",
      "10s",
      "30s",
      "1m",
      "5m",
      "15m",
      "30m",
      "1h",
      "2h",
      "1d"
    ]
  },
  "timezone": "",
  "title": "Redis_Cluster_V1.35",
  "uid": "5FfBHG3Zz",
  "variables": {
    "list": []
  },
  "version": 4
}
View Code

③:旧版本redis_exporter [v0.34.1]支持多实例不同密码,集群信息:

集群1:密码 cc
M: 
192.168.163.132:15389
192.168.163.133:15389
192.168.163.134:15389
S:
192.168.163.132:15489
192.168.163.133:15489
192.168.163.134:15489

集群2:密码abc
M:
192.168.163.132:6379
192.168.163.133:6379
192.168.163.134:6379
S:
192.168.163.132:6381
192.168.163.133:6381
192.168.163.134:6381

prometheus.yml:

global:
  scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.

alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093

rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

scrape_configs:
  - job_name: 'prometheus'
    static_configs:
    - targets: ['192.168.163.132:9099']

  - job_name: 'node_exporter'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/node/nodes-instances.json
        refresh_interval: 10s
    relabel_configs:
    - action: replace
      source_labels: ['__address__'] 
      regex: (.*):(.*) 
      replacement: $1
      target_label: hostip
    - action: labeldrop
      regex: __meta_filepath

  - job_name: 'redis_exporter'
    scrape_interval: 1s
    static_configs:
    - targets: ['192.168.163.132:9128']
View Code

redis_exporter直接用命令行启动:对应的参数有-redis.addr、-redis.alias、-redis.password:

# ./redis_exporter -redis-only-metrics -redis.addr 192.168.163.132:15389,192.168.163.133:15389,192.168.163.134:15389,192.168.163.132:15489,192.168.163.133:15489,192.168.163.134:15489,192.168.163.132:6379,192.168.163.133:6379,192.168.163.134:6379,192.168.163.132:6381,192.168.163.133:6381,192.168.163.134:6381 -redis.alias test,test,test,test,test,test,test123,test123,test123,test123,test123,test123 -redis.password cc,cc,cc,cc,cc,cc,abc,abc,abc,abc,abc,abc -web.listen-address :9128
INFO[0000] Redis Metrics Exporter v0.34.1    build date: 2019-05-09-15:42:21    sha1: 1c168d07eff09e64efb18600a35664d6666926e6    Go: go1.12.5 
INFO[0000] Providing metrics at :9128/metrics           
INFO[0000] Connecting to redis hosts: []string{"192.168.163.132:15389", "192.168.163.133:15389", "192.168.163.134:15389", "192.168.163.132:15489", "192.168.163.133:15489", "192.168.163.134:15489", "192.168.163.132:6379", "192.168.163.133:6379", "192.168.163.134:6379", "192.168.163.132:6381", "192.168.163.133:6381", "192.168.163.134:6381"} 
INFO[0000] Using alias: []string{"test", "test", "test", "test", "test", "test", "test123", "test123", "test123", "test123", "test123", "test123"}

注意:参数、密码和实例的他们是一一对应的。最后配置Grafana,效果:

JSON Model:

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "editable": true,
  "gnetId": null,
  "graphTooltip": 0,
  "id": 14,
  "iteration": 1587221739977,
  "links": [],
  "panels": [
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "集群个数",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 0,
        "y": 0
      },
      "id": 8,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(count(redis_up{alias=~\"$cluster\"}>0) by (alias))",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "集群个数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "集群节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 5,
        "y": 0
      },
      "id": 4,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_instance_info{alias=~\"$cluster\"})",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "集群节点数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "集群活跃节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 4,
        "x": 10,
        "y": 0
      },
      "id": 6,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_up{alias=~\"$cluster\"}>0)",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "集群活跃节点数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
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      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorPrefix": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "主节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 14,
        "y": 0
      },
      "id": 10,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_instance_info{alias=~\"$cluster\", role=\"master\"})",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "主节点个数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "从节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 19,
        "y": 0
      },
      "id": 12,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
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        "values": false
      },
      "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": "node_load1{hostip=~\"$host\"}",
          "interval": "",
          "legendFormat": "{{hostip}}",
          "refId": "A"
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "负载(Load)",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    }
  ],
  "refresh": "5s",
  "schemaVersion": 22,
  "style": "dark",
  "tags": [],
  "templating": {
    "list": [
      {
        "auto": true,
        "auto_count": 100,
        "auto_min": "1s",
        "current": {
          "selected": true,
          "text": "5s",
          "value": "5s"
        },
        "hide": 0,
        "label": "interval",
        "name": "interval",
        "options": [
          {
            "selected": false,
            "text": "auto",
            "value": "$__auto_interval_interval"
          },
          {
            "selected": true,
            "text": "5s",
            "value": "5s"
          },
          {
            "selected": false,
            "text": "30s",
            "value": "30s"
          },
          {
            "selected": false,
            "text": "1m",
            "value": "1m"
          },
          {
            "selected": false,
            "text": "10m",
            "value": "10m"
          },
          {
            "selected": false,
            "text": "30m",
            "value": "30m"
          },
          {
            "selected": false,
            "text": "1h",
            "value": "1h"
          },
          {
            "selected": false,
            "text": "6h",
            "value": "6h"
          },
          {
            "selected": false,
            "text": "12h",
            "value": "12h"
          },
          {
            "selected": false,
            "text": "1d",
            "value": "1d"
          }
        ],
        "query": "5s,30s,1m,10m,30m,1h,6h,12h,1d",
        "refresh": 2,
        "skipUrlSync": false,
        "type": "interval"
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_up,alias)",
        "hide": 0,
        "includeAll": true,
        "index": -1,
        "label": "Cluster",
        "multi": true,
        "name": "cluster",
        "options": [],
        "query": "label_values(redis_up,alias)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_instance_info{alias=~\"$cluster\"},role)",
        "hide": 0,
        "includeAll": true,
        "index": -1,
        "label": "Role",
        "multi": true,
        "name": "role",
        "options": [],
        "query": "label_values(redis_instance_info{alias=~\"$cluster\"},role)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_instance_info{alias=~\"$cluster\",role=~\"$role\"},addr)",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "instance",
        "multi": true,
        "name": "instance",
        "options": [],
        "query": "label_values(redis_instance_info{alias=~\"$cluster\",role=~\"$role\"},addr)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_instance_info{alias=~\"$cluster\",role=\"master\"},addr)",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "master",
        "multi": true,
        "name": "master",
        "options": [],
        "query": "label_values(redis_instance_info{alias=~\"$cluster\",role=\"master\"},addr)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_up{alias=~\"$cluster\"}, addr)",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "host",
        "multi": true,
        "name": "host",
        "options": [],
        "query": "label_values(redis_up{alias=~\"$cluster\"}, addr)",
        "refresh": 1,
        "regex": "(.*):.*",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      }
    ]
  },
  "time": {
    "from": "now-5m",
    "to": "now"
  },
  "timepicker": {
    "refresh_intervals": [
      "5s",
      "10s",
      "30s",
      "1m",
      "5m",
      "15m",
      "30m",
      "1h",
      "2h",
      "1d"
    ]
  },
  "timezone": "",
  "title": "Redis_Cluster_V0.34",
  "uid": "5FfBHG3Zz1",
  "variables": {
    "list": []
  },
  "version": 1
}
View Code

3)导入dashboard(763)到Grafana,展示的监控图:

需要注意的是,监控面板上看到的是exporter的IP和端口,看不到Redis实例的端口,如果是一台机器部署一台Redis实例,则可以直接使用主机名。或则修改相应的labels来自定义需求。除了修改labels之外,还可以自定义数据源,如使用MySQL作为新数据源。

5)MySQL做为数据源定制模板

添加数据源:

表结构:

CREATE TABLE `cluster_info` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键',
  `cluster_type` varchar(64) DEFAULT NULL COMMENT '集群类型',
  `cluster_name` varchar(64) DEFAULT NULL COMMENT '集群名',
  `hostname` varchar(64) DEFAULT NULL COMMENT '主机名',
  `host_ip` varchar(64) DEFAULT NULL COMMENT 'IP',
  `port` int(11) DEFAULT NULL COMMENT '服务端口',
  `role` varchar(64) DEFAULT NULL COMMENT '服务角色',
  `comments` varchar(500) DEFAULT NULL COMMENT '集群描述',
  `create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  `update_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
  PRIMARY KEY (`id`),
  KEY `idx_create_time` (`create_time`),
  KEY `idx_update_time` (`update_time`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COMMENT='集群信息'

表记录:

mysql> select * from cluster_info;
+----+---------------+--------------+----------+-----------------+------+--------+--------------+---------------------+---------------------+
| id | cluster_type  | cluster_name | hostname | host_ip         | port | role   | comments     | create_time         | update_time         |
+----+---------------+--------------+----------+-----------------+------+--------+--------------+---------------------+---------------------+
|  1 | Redis_Cluster | testX        | test2    | 192.168.163.132 | 6380 | master | 测试集群     | 2020-04-08 19:22:56 | 2020-04-09 11:19:13 |
|  2 | Redis_Cluster | testX        | test3    | 192.168.163.133 | 6380 | master | 测试集群     | 2020-04-08 19:24:29 | 2020-04-09 11:19:16 |
|  3 | Redis_Cluster | testX        | test4    | 192.168.163.134 | 6380 | master | 测试集群     | 2020-04-08 19:24:33 | 2020-04-09 11:19:16 |
+----+---------------+--------------+----------+-----------------+------+--------+--------------+---------------------+---------------------+

5.1 使用编写导出器的最佳实践:

prometheus.yml:

global:
  scrape_interval:     10s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute.

alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093

rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

scrape_configs:
  - job_name: 'prometheus'
    static_configs:
    - targets: ['192.168.163.132:9099']

  - job_name: 'node_exporter'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/node/node*.yml
        refresh_interval: 10s
    relabel_configs:
    - action: replace
      source_labels: ['__address__']
      regex: (.*):(.*)
      replacement: $1
      target_label: hostname
    - action: labeldrop
      regex: __meta_filepath

  - job_name: 'redis_exporter'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/redis/Xredis*.yml
    relabel_configs:
    - action: replace
      source_labels: ['__address__']
      regex: (.*):(.*)
      replacement: $1
      target_label: hostip
    - action: labeldrop
      regex: __meta_filepath
View Code

targets/node/node*.yml

root@test2:/etc/prometheus/targets/node# ls -lh node*.yml
-rw-r--r-- 1 prometheus prometheus 103 4月  19 01:24 node_test2_exporter.yml
-rw-r--r-- 1 prometheus prometheus 103 4月  18 16:18 node_test3_exporter.yml
-rw-r--r-- 1 prometheus prometheus 103 4月  18 16:18 node_test4_exporter.yml
root@test2:/etc/prometheus/targets/node# cat node_test2_exporter.yml
[
  {
    "targets": ["192.168.163.132:9199"],
    "labels": {"env":"test","instance":"test2"}
  }
]


root@test2:/etc/prometheus/targets/node# cat node_test3_exporter.yml
[
  {
    "targets": ["192.168.163.133:9199"],
    "labels": {"env":"test","instance":"test3"}
  }
]


root@test2:/etc/prometheus/targets/node# cat node_test4_exporter.yml
[
  {
    "targets": ["192.168.163.134:9199"],
    "labels": {"env":"test","instance":"test4"}
  }
]
View Code

targets/redis/Xredis*.yml

root@test2:/etc/prometheus/targets/redis# ls -lh Xredis*.yml
-rw-r--r-- 1 root root 118 4月  19 00:34 Xredis_test2_6380_exporter.yml
-rw-r--r-- 1 root root 118 4月  19 00:36 Xredis_test3_6380_exporter.yml
-rw-r--r-- 1 root root 118 4月  19 00:35 Xredis_test4_6380_exporter.yml
root@test2:/etc/prometheus/targets/redis# cat Xredis_test2_6380_exporter.yml
[
  {
    "targets": ["192.168.163.132:9123"],
    "labels": {"env":"test","cluster":"testX","alias":"test2"}
  }
]


root@test2:/etc/prometheus/targets/redis# cat Xredis_test3_6380_exporter.yml
[
  {
    "targets": ["192.168.163.133:9123"],
    "labels": {"env":"test","cluster":"testX","alias":"test3"}
  }
]


root@test2:/etc/prometheus/targets/redis# cat Xredis_test4_6380_exporter.yml
[
  {
    "targets": ["192.168.163.134:9123"],
    "labels": {"env":"test","cluster":"testX","alias":"test4"}
  }
]
View Code

配置完成之后,可以直接到各个监控主机上启动redis_exporter

test2:
./redis_exporter  -redis-only-metrics -redis.addr 192.168.163.132:6380 -redis.password cba  -web.listen-address=:9123

test3:
./redis_exporter  -redis-only-metrics -redis.addr 192.168.163.133:6380 -redis.password cba  -web.listen-address=:9123

test4:
./redis_exporter  -redis-only-metrics -redis.addr 192.168.163.134:6380 -redis.password cba  -web.listen-address=:9123

最后配置Grafana,效果:

JSON Model:

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "editable": true,
  "gnetId": null,
  "graphTooltip": 0,
  "id": 13,
  "iteration": 1587231669738,
  "links": [],
  "panels": [
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "集群个数",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 0,
        "y": 0
      },
      "id": 8,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(count(redis_up{cluster=~\"$cluster\"}) by (cluster))",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "集群个数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "集群节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 5,
        "y": 0
      },
      "id": 4,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_up{cluster=~\"$cluster\"})",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "集群节点数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "集群活跃节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 4,
        "x": 10,
        "y": 0
      },
      "id": 6,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_up{cluster=~\"$cluster\"}>0)",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "集群活跃节点数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorPrefix": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "主节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 14,
        "y": 0
      },
      "id": 10,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_instance_info{cluster=~\"$cluster\", role=\"master\"})",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "主节点个数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "从节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 19,
        "y": 0
      },
      "id": 12,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
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        "total": false,
        "values": false
      },
      "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": "node_load1{instance=~\"$host\"}",
          "interval": "",
          "legendFormat": "{{instance}}",
          "refId": "A"
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "负载(Load)",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    }
  ],
  "refresh": "5s",
  "schemaVersion": 22,
  "style": "dark",
  "tags": [],
  "templating": {
    "list": [
      {
        "auto": true,
        "auto_count": 100,
        "auto_min": "1s",
        "current": {
          "selected": false,
          "text": "5s",
          "value": "5s"
        },
        "hide": 0,
        "label": "interval",
        "name": "interval",
        "options": [
          {
            "selected": false,
            "text": "auto",
            "value": "$__auto_interval_interval"
          },
          {
            "selected": true,
            "text": "5s",
            "value": "5s"
          },
          {
            "selected": false,
            "text": "30s",
            "value": "30s"
          },
          {
            "selected": false,
            "text": "1m",
            "value": "1m"
          },
          {
            "selected": false,
            "text": "10m",
            "value": "10m"
          },
          {
            "selected": false,
            "text": "30m",
            "value": "30m"
          },
          {
            "selected": false,
            "text": "1h",
            "value": "1h"
          },
          {
            "selected": false,
            "text": "6h",
            "value": "6h"
          },
          {
            "selected": false,
            "text": "12h",
            "value": "12h"
          },
          {
            "selected": false,
            "text": "1d",
            "value": "1d"
          }
        ],
        "query": "5s,30s,1m,10m,30m,1h,6h,12h,1d",
        "refresh": 2,
        "skipUrlSync": false,
        "type": "interval"
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "MySQL",
        "definition": "select cluster_name from cluster_info where cluster_type = \"Redis_Cluster\"",
        "hide": 0,
        "includeAll": true,
        "index": -1,
        "label": "Cluster",
        "multi": true,
        "name": "cluster",
        "options": [],
        "query": "select cluster_name from cluster_info where cluster_type = \"Redis_Cluster\"",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "MySQL",
        "definition": "select role from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster)",
        "hide": 0,
        "includeAll": true,
        "index": -1,
        "label": "Role",
        "multi": true,
        "name": "role",
        "options": [],
        "query": "select role from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "MySQL",
        "definition": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster)",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "host",
        "multi": true,
        "name": "host",
        "options": [],
        "query": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "MySQL",
        "definition": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster) and role=\"master\"",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "master",
        "multi": true,
        "name": "master",
        "options": [],
        "query": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster) and role=\"master\"",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "MySQL",
        "definition": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster) and role=\"slave\"",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "slave",
        "multi": true,
        "name": "slave",
        "options": [],
        "query": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster) and role=\"slave\"",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "label_values(redis_instance_info{cluster=~\"$cluster\",role=~\"$role\"},instance)",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "instance",
        "multi": true,
        "name": "instance",
        "options": [],
        "query": "label_values(redis_instance_info{cluster=~\"$cluster\",role=~\"$role\"},instance)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      }
    ]
  },
  "time": {
    "from": "now-5m",
    "to": "now"
  },
  "timepicker": {
    "refresh_intervals": [
      "5s",
      "10s",
      "30s",
      "1m",
      "5m",
      "15m",
      "30m",
      "1h",
      "2h",
      "1d"
    ]
  },
  "timezone": "",
  "title": "Redis_Cluster_V1.35",
  "uid": "5FfBHG3Zz",
  "variables": {
    "list": []
  },
  "version": 9
}
View Code

5.2 使用老版本的exporter:

prometheus.yml

global:
  scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.

alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093

rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

scrape_configs:
  - job_name: 'prometheus'
    static_configs:
    - targets: ['192.168.163.132:9099']


  - job_name: 'node_exporter'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/node/node*.yml
        refresh_interval: 10s
    relabel_configs:
    - action: replace
      source_labels: ['__address__']
      regex: (.*):(.*)
      replacement: $1
      target_label: hostname
    - action: labeldrop
      regex: __meta_filepath

  - job_name: 'redis_exporter'
    scrape_interval: 1s
    static_configs:
    - targets: ['192.168.163.132:9128']
View Code

配置完成之后,可以直接到监控主机上启动redis_exporter

./redis_exporter -redis-only-metrics -redis.addr 192.168.163.132:6380,192.168.163.133:6380,192.168.163.134:6380 -redis.alias test2,test3,test4 -redis.password cba,cba,cba -web.listen-address :9128

最后配置Grafana,效果:

JSON Model:

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "editable": true,
  "gnetId": null,
  "graphTooltip": 0,
  "id": 13,
  "iteration": 1587234344797,
  "links": [],
  "panels": [
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": "MySQL",
      "description": "集群个数",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 0,
        "y": 0
      },
      "id": 8,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "format": "table",
          "group": [],
          "metricColumn": "none",
          "rawQuery": true,
          "rawSql": "select count(distinct cluster_name) from cluster_info where cluster_type = 'Redis_Cluster'",
          "refId": "A",
          "select": [
            [
              {
                "params": [
                  "id"
                ],
                "type": "column"
              }
            ]
          ],
          "table": "cluster_info",
          "timeColumn": "create_time",
          "timeColumnType": "timestamp",
          "where": [
            {
              "name": "$__timeFilter",
              "params": [],
              "type": "macro"
            }
          ]
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "集群个数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "集群节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 5,
        "y": 0
      },
      "id": 4,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_up{alias=~\"$all_host\"})",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "集群节点数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "集群活跃节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 4,
        "x": 10,
        "y": 0
      },
      "id": 6,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_up{alias=~\"$all_host\"}>0)",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "集群活跃节点数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorPrefix": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "主节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 14,
        "y": 0
      },
      "id": 10,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_instance_info{alias=~\"$master\", role=\"master\"})",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "主节点个数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": null,
      "description": "从节点数量",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 5,
        "x": 19,
        "y": 0
      },
      "id": 12,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false,
        "ymax": null,
        "ymin": null
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "count(redis_instance_info{alias=~\"$slave\", role=\"slave\"})",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": "",
      "timeFrom": null,
      "timeShift": null,
      "title": "从节点个数",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": null,
      "description": "Redus  Cluster OPS指标",
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
        "h": 8,
        "w": 12,
        "x": 0,
        "y": 3
      },
      "hiddenSeries": false,
      "id": 16,
      "legend": {
        "avg": false,
        "current": false,
        "max": false,
        "min": false,
        "show": true,
        "total": false,
        "values": false
      },
      "lines": true,
      "linewidth": 1,
      "nullPointMode": "null",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 2,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "ceil(sum(rate(redis_commands_processed_total{alias=~\"$master\"}[$interval])))",
          "interval": "5s",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Redis Cluster OPS",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": null,
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        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "MySQL",
        "definition": "select role from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster)",
        "hide": 0,
        "includeAll": true,
        "index": -1,
        "label": "Role",
        "multi": true,
        "name": "role",
        "options": [],
        "query": "select role from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "MySQL",
        "definition": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster)  and  role in ($role)",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "host",
        "multi": true,
        "name": "host",
        "options": [],
        "query": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster)  and  role in ($role)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "MySQL",
        "definition": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster) and role=\"master\"",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "master",
        "multi": true,
        "name": "master",
        "options": [],
        "query": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster) and role=\"master\"",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "MySQL",
        "definition": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster) and role=\"slave\"",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "slave",
        "multi": true,
        "name": "slave",
        "options": [],
        "query": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster) and role=\"slave\"",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "MySQL",
        "definition": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster)",
        "hide": 2,
        "includeAll": true,
        "index": -1,
        "label": "all_host",
        "multi": true,
        "name": "all_host",
        "options": [],
        "query": "select hostname from cluster_info where cluster_type  = \"Redis_Cluster\"  and cluster_name in ($cluster)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      }
    ]
  },
  "time": {
    "from": "now-5m",
    "to": "now"
  },
  "timepicker": {
    "refresh_intervals": [
      "5s",
      "10s",
      "30s",
      "1m",
      "5m",
      "15m",
      "30m",
      "1h",
      "2h",
      "1d"
    ]
  },
  "timezone": "",
  "title": "Redis_Cluster_V1.35",
  "uid": "5FfBHG3Zz",
  "variables": {
    "list": []
  },
  "version": 14
}
View Code

从上面的图中看到,其中OPS的Legend展示的是表达式,按照老版本的的redis_exporter,不能自定义label,虽然监控不同密码多实例比较方便,但作图的时候不好看。目前想到二种方法:

1. 使用推荐的一个实例一个exporter。

2. 在老版本redis_exporter基础上,对指标进行重新定义和打label,此时需要自己编写一个exporter来对指标进行重写。

如:老版本的redis_exporter部署在137这台机器上,并且端口为9128:使用python的prometheus_client模块编写一个服务(5000)来抓取数据进行label修改:

#!/bin/env python
# -*- encoding: utf-8 -*-

import requests
import re
import json
import MySQLdb
import prometheus_client
from prometheus_client import Gauge,Counter
from flask import Response, Flask
app = Flask(__name__)


def redis_cluster_metadata():
    conn = MySQLdb.connect(host="192.168.163.133", port=3306, user="dba", passwd="dba", db='test', charset='utf8')
    query = ''' 
SELECT
    concat( host_ip, ':', PORT ) ip,
    cluster_name 
FROM
    cluster_info 
WHERE
    cluster_type = 'Redis_Cluster'
    '''
    cursor = conn.cursor()
    cursor.execute(query)
    conn.commit()
    result = cursor.fetchall()
    cursor.close()
    return result


def gauge_init(pair):
    result = {}
    for k, v in pair.items():
        name = v
        documentation = v
        label = ("alias", "addr", "cluster")
        gauge = Gauge(name, documentation, label)
        result[v] = gauge
    return result


def redis_cluster_metric(pair):
    url = "http://192.168.163.137:9128/metrics"
    pat = re.compile(r'addr="(.*)",alias="(.*)"')
    request_data = requests.get(url, timeout=3)
    metrics_info = request_data.text
    metrics_dict = {}
    for metrics in metrics_info.split('\n'):
        for metric in pair:
            if metrics.find(metric) == 0:
                value = metrics.split(' ')[1]
                pat_info = pat.search(metrics)
                ip = pat_info.group(1)
                alias = pat_info.group(2)
                metrics_dict.setdefault(ip, {})
                metrics_dict[ip]['alias'] = alias
                metrics_dict[ip][metrics_pair[metric]] = value
    return metrics_dict


@app.route("/metrics")
def prometheus_for_redis(): 
    redis_cluster_info = redis_cluster_metadata()
    metadata_dict = {}
    for redis_cluster_item in redis_cluster_info:
        ip,clustername = redis_cluster_item
        metadata_dict[ip] = clustername

    metrics_dict = redis_cluster_metric(metrics_pair)

    
    for k,v in metrics_dict.items():
        for _k,_v in metadata_dict.items():
            if k == _k:
                metrics_dict[k]['cluster'] = _v

    print metadata_dict
    print metrics_dict

    result = ''
    for metric_name, gauge in gauge_dict.items():
        for k, v in metrics_dict.items():
            if k in metadata_dict.keys():
                gauge.labels(alias=v['alias'], addr=k, cluster=v['cluster']).set(v[metric_name])

        result = result + prometheus_client.generate_latest(gauge).decode()
    return Response(result, mimetype="text/plain")
    
if __name__ == "__main__":
    metrics_pair = {'redis_commands_processed_total': 'cluster_redis_commands_processed_total','redis_cluster_size':'cluster_redis_cluster_size'}
    gauge_dict = gauge_init(metrics_pair)
    app.run(host="0.0.0.0")
View Code

大致的思想是:对原始的redis_exporter的指标进行过滤,拿出需要的指标进行label指定,最后作为一个导出器服务启动(5000),并配置到prometheus.yml里:

global:
  scrape_interval:     5s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 5s # Evaluate rules every 15 seconds. The default is every 1 minute.

alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093

rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

scrape_configs:
  - job_name: 'prometheus'
    static_configs:
    - targets: ['192.168.163.137:9099']


  - job_name: 'node_exporter'
    scrape_interval: 1s
    file_sd_configs:
      - files:
        - targets/node/node*.yml
        refresh_interval: 10s
    relabel_configs:
    - action: replace
      source_labels: ['__address__']
      regex: (.*):(.*)
      replacement: $1
      target_label: hostname
    - action: labeldrop
      regex: __meta_filepath

  - job_name: 'redis_exporter'
    scrape_interval: 1s
    static_configs:
    - targets: ['192.168.163.137:9128']

  - job_name: 'redisx_exporter'
    metrics_path: /redisx_cluster/metrics
    scrape_interval: 1s
    static_configs:
    - targets: ['192.168.163.137:5000']
View Code
/Users/jinyizhou [18:51:25] ~$ curl http://0.0.0.0:5000/metrics
# HELP cluster_redis_commands_processed_total cluster_redis_commands_processed_total
# TYPE cluster_redis_commands_processed_total gauge
cluster_redis_commands_processed_total{addr="192.168.163.137:6380",alias="test2",cluster="testX"} 1796512.0
cluster_redis_commands_processed_total{addr="192.168.163.133:6380",alias="test3",cluster="testX"} 1592838.0
cluster_redis_commands_processed_total{addr="192.168.163.134:6380",alias="test4",cluster="testX"} 1592053.0
View Code

最后OPS的Legend显示为:

小结:

上面的给出的这些参考指标以及监控项可以按照需要自行进行调整,如果需要做类似redis_exporter的导出器,可以连接Redis各个节点进行采样。具体的一些方法可以参考client_python

总结:

本文大致介绍了Prometheus 监控Redis(cluster)的方法,后续会不定期进行对监控的完善。redis_exporter在v1.0之后做了比较大的调整,特别是对多实例不同密码这一块的改变,推荐还是最新版本的redis_exporter,按照推荐进行设置。如果需要,大家可以看官方文档进行相应的学习。

 

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