【其他】Prometheus

参考

配置

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

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

    static_configs:
    - targets: ['localhost:9090']
    
  - job_name: 'mysql'
    - targets: ['localhost:3306']

热加载配置

# 修改 prometheus.yml 后可通过 reload 接口刷新配置
# 注意用 POST
curl -X POST http://localhost:9090/-/reload

实现prometheus exporter

https://www.jianshu.com/p/5db23a280e1d

prometheus label

https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels,-not-static-scraped-labels
https://prometheus.io/docs/practices/instrumentation/#things-to-watch-out-for