alertManager

prometheus-operator里的alertManager实例是通过服务发现的方式来做的

---

自定义rule

------
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
labels:
prometheus: k8s
role: alert-rules
name: etcd-rules
namespace: monitoring
spec:
groups:

• name: etcd
  rules:
  • alert: EtcdClusterUnavailable
    annotations:
    summary: etcd cluster small
    descriprion: If one more etcd peer goes down the cluster will be unavailable.
    expr: |
    up{job="etcd"} == 0

count(up{job="etcd"} == 0) > (count(up{job="etcd"}) / 2 - 1)

  for: 1s
  labels:
    serverity: critical