docker - 自动将新的节点导出器添加到prometheus.yml的目标数组

Question

我的环境中有一个基本的prometheus.yml文件，即

###
apiVersion: v1
kind: ConfigMap
metadata:
  creationTimestamp: null
  name: prometheus-core
data:
  prometheus.yml: |
    global:
      scrape_interval: 10s
      scrape_timeout: 10s
      evaluation_interval: 10s

    rule_files:
      - '/etc/prometheus-rules/*.rules'

    scrape_configs:
       # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
      - job_name: 'prometheus'

        # Override the global default and scrape targets from this job every 5 seconds.
        scrape_interval: 5s

        # metrics_path defaults to '/metrics'
        # scheme defaults to 'http'.

        static_configs:
          - targets: ['localhost:9090'] 

现在，如果我将新节点添加到我的环境中，则我的prometheus.yml文件应该自动更新并将节点添加到下面的目标中。

###
apiVersion: v1
kind: ConfigMap
metadata:
  creationTimestamp: null
  name: prometheus-core
data:
  prometheus.yml: |
    global:
      scrape_interval: 10s
      scrape_timeout: 10s
      evaluation_interval: 10s

    rule_files:
      - '/etc/prometheus-rules/*.rules'

    scrape_configs:
       # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
      - job_name: 'prometheus'

        # Override the global default and scrape targets from this job every 5 seconds.
        scrape_interval: 5s

        # metrics_path defaults to '/metrics'
        # scheme defaults to 'http'.

        static_configs:
          - targets: ['localhost:9090','12.10.17.6:9100','12.10.17.19:9100'] 

有人可以建议我如何实现这一目标吗？

Answer 1

Prometheus支持Kubernetes服务发现机制，有关详细信息，请参见documentation。

因此，您应该添加类似于以下内容的部分，而不是static_configs部分:

scrape_configs:
- job_name: 'kubernetes-service-endpoints'

  kubernetes_sd_configs:
  - role: endpoints

...

查看此 example configuration file的操作方法。