prometheus執行時更新config的方式

參考官方文件的教學如下:
https://prometheus.io/docs/prometheus/latest/configuration/configuration/

Prometheus can reload its configuration at runtime. If the new configuration is not well-formed, the changes will not be applied. A configuration reload is triggered by sending a SIGHUP to the Prometheus process or sending a HTTP POST request to the /-/reload endpoint (when the –web.enable-lifecycle flag is enabled). This will also reload any configured rule files.

而實際的應用方式則是:

• 第一種，向prometheus進行發信號
  
  kill -HUP pid

  1	kill -HUP  pid

• 第二種，向prometheus發送HTTP請求
  
  curl -XPOST http://127.0.0.1:9090/-/reload

  1	curl -XPOST http://127.0.0.1:9090/-/reload

  
  但是會需要先設定--web.enable-lifecycle參數
  
  template: metadata: labels: ... prometheus: rancher-monitoring-prometheus spec: containers: - args: - --web.enable-lifecycle image: rancher/mirrored-prometheus-prometheus:v2.27.1 imagePullPolicy: IfNotPresent name: prometheus ....

  1 2 3 4 5 6 7 8 9 10 11 12 13

  template:     metadata:       labels:         ...         prometheus: rancher-monitoring-prometheus     spec:       containers:       - args:         - --web.enable-lifecycle         image: rancher/mirrored-prometheus-prometheus:v2.27.1         imagePullPolicy: IfNotPresent         name: prometheus         ....