prometheus告警模块ALTERMANAGER中抑制规则的使用

prometheus服务端通过配置文件可以设置告警，下面是一个告警设置的配置文件alert.yml：

groups:
- name: goroutines_monitoring
  rules:
  - alert: TooMuchGoroutines
    expr: go_goroutines{job="prometheus"} > 20
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: "too much goroutines of job prometheus."
      description: "testing"

- name: goroutines_monitoring
  rules:
  - alert: TooMuchGoroutines
    expr: go_goroutines{job="prometheus"} > 30
    for: 5m
    labels:
      sev