prometheus服务发现-不同场景下的service注册参数-优快云博客

本文详细介绍了Prometheus服务发现机制，包括如何通过修改__metrics_path__实现metric路径的重写，以及如何配置blackbox_exporter进行HTTP探测。示例展示了不同场景下服务注册的具体配置。

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普通场景

{
  "ID": "2",
  "Name": "exporter-vcenter-ping",
  "Tags": [
    "vcenter"
  ],
  "Address": "10.60.82.168",
  "Port": 3871,
  "Meta": {
    "component": "vcenter_ping",
  }
}

此service注册到prometheus后，抓取的链接为http://10.60.82.168:3871/metrics

重写metric path

prometheus中的metric path主要是靠label中__metrics_path__来确定，默认为/metrics

{
  "ID": "2",
  "Name": "exporter-vcenter-ping",
  "Tags": [
    "normal"
  ],
  "Address": "10.60.82.168",
  "Port": 3871,
  "Meta": {
    "component": "vcenter_ping",
    "__metrics_path__":"/metrics/vcenter_ping"
  }
}

此service注册到prometheus后，抓取的链接为http://10.60.82.168:3871/metrics/vcenter_ping

blackbox

{
  "ID": "2",
  "Name": "http-vcenter",
  "Tags": [
    "normal"
  ],
  "Address": "127.0.0.1",
  "Port": 9115,
  "Meta": {
    "component": "vcenter_ping",
    "__metrics_path__":"/probe",
    "__param_target":"http://127.0.0.1:18500",
    "__param_module":"http_2xx"
  }
}

此service注册到prometheus后，抓取的链接为http://10.106.169.121:9115/probe?module=http_2xx&target=http%3A%2F%2F127.0.0.1%3A18500