Question

Prometheus似乎正在以错误的方式为目标实例标记和设置其他元数据，这可能是由于配置错误所致。

这里是配置，用于抓取多个目标并标记每个目标：

global:
  scrape_interval: 5s

scrape_configs:
  - job_name: 'prometheus'
    static_configs:
      - targets: ['localhost:9090']
        labels:
          host: 'Server0'
          service: 'Prometheus'

  - job_name: 'node_exporter'
    static_configs:
      - targets: ['localhost:9100']
        labels:
          host: 'Server0'

  - job_name: 'wmi_exporter'
    static_configs:
      - targets: ['xxx.xxx.xxx.xxx:9100']
        labels:
          host: 'Server1'
      - targets: ['xxx.xxx.xxx.xxx:9100']
        labels:
          host: 'Server2'

所有目标在Prometheus管理界面中都显示为UP。但是，当我对prometheus_sd_discovered_targets运行查询时，它返回的目标具有相同的job名称，instance地址，host和service标签：

prometheus_sd_discovered_targets{config="node_exporter",host="Local",instance="localhost:9090",job="prometheus",name="scrape",service="Prometheus"}     1

prometheus_sd_discovered_targets{config="prometheus",host="Local",instance="localhost:9090",job="prometheus",name="scrape",service="Prometheus"}     1

prometheus_sd_discovered_targets{config="wmi_exporter",host="Local",instance="localhost:9090",job="prometheus",name="scrape",service="Prometheus"}     2

为什么元数据值对于所有目标而言都是相同的，即使它们的配置和标签不同？

Answer 1

prometheus_sd_discovered_targets是Prometheus（不是节点导出器，不是wmi导出器）导出的度量标准，因此所有这些时间序列都来自您唯一的Prometheus实例，即host="Local",instance="localhost:9090",job="prometheus",service="Prometheus"。

name="scrape",config="wmi_exporter"标签来自度量标准本身，因为如果您选中http://localhost:9090/metrics，则会发现（其中包括）以下内容：

prometheus_sd_discovered_targets{name="scrape",config="node_exporter"} 1
prometheus_sd_discovered_targets{name="scrape",config="prometheus"} 1
prometheus_sd_discovered_targets{name="scrape",config="wmi_exporter"} 2

Prometheus中的实例标签问题

1 个答案: