promethues golang

code go

學習promethues

理論

pull vs push

  • 官方建議在長生命週期時讓promethues自己pull而非服務端主動push

本地使用promethues

啟動promethues

prometheus --config.file=./prometheus.yaml

是否promethues 有成功metrics

curl http://192.168.0.101:9092/metrics

測試是否有成功pull metrics

curl http://localhost:9090/api/v1/targets

連接Grpc使用

配置config

  • 這邊監聽得port是promethues中metrics的而非grpc的port
global:
  scrape_timeout: 10s
  evaluation_interval: 30s
  external_labels:
    monitor: 'grpc-template'
 
scrape_configs:
  - job_name: 'grpc_echo_server'
    scrape_interval: 1s
    static_configs:
      - targets: ['192.168.0.101:9092']

註冊promethue的metrics

httpServer := &http.Server{Addr: ":9092", Handler: promhttp.HandlerFor(reg, promhttp.HandlerOpts{})}
	go func() {
		if err := httpServer.ListenAndServe(); err != nil {
			log.Fatal(err)
		}
	}()