Prometheus-Grafana：如何在查询中使用通配符

Question

我在普罗米修斯中有以下标签，如何在模板化“query”之类的内容时创建通配符查询：“label_values(application_*Count_Total,xyx)”。这些值是从 Eclipse Microprofile REST-API 生成的

application_getEnvVariablesCount_total
application_getFEPmemberCount_total
application_getLOBDetailsCount_total
application_getPropertiesCount_total

  {
    "allValue": null,
    "current": {
      "isNone": true,
      "selected": false,
      "text": "None",
      "value": ""
    },
    "datasource": "bcnc-prometheus",
    "definition": "microprofile1",
    "hide": 0,
    "includeAll": false,
    "label": null,
    "multi": false,
    "name": "newtest",
    "options": [
      {
        "isNone": true,
        "selected": true,
        "text": "None",
        "value": ""
      }
    ],
    "query": "microprofile1",
    "refresh": 0,
    "regex": "{__name__=~\"application_.*Count_total\"}",
    "skipUrlSync": false,
    "sort": 0,
    "tagValuesQuery": "",
    "tags": [],
    "tagsQuery": "",
    "type": "query",
    "useTags": false
  },

Answer 1

Prometheus 对待指标名称的方式与带有特殊标签 - 的标签值相同__name__。因此，以下查询应选择xyx名称与正则application_.*Count_total表达式匹配的指标中的所有标签值：

label_values({__name__=~"application_.*Count_total"}, xyx)