我已经通过helm安装了prometheus操作员，现在想设置自定义警报规则，设置了电子邮件通知，目前我正在收到每个通知，我想"静音"，这样我就可以收到自定义警报的电子邮件。
alertmanager.yaml:
global:
resolve_timeout: 5m
route:
receiver: 'email-alert'
group_by: ['job']
routes:
- receiver: 'email-alert'
match:
alertname: etcdInsufficientMembers
group_wait: 30s
group_interval: 5m
repeat_interval: 12h
receivers:
- name: email-alert
email_configs:
- to: receiver@example.com
from: sender@example.com
# Your smtp server address
smarthost: smtp.office365.com:587
auth_username: sender@example.com
auth_identity: sender@example.com
auth_password: pass
以上文件应用成功，
我在上面文件的末尾添加了以下几行，如下所述：
# Example group with one alert
groups:
- name: example-alert
rules:
# Alert about restarts
- alert: RestartAlerts
expr: count(kube_pod_container_status_restarts_total) > 0
for: 1s
annotations:
summary: "More than 5 restarts in pod {{ $labels.pod-name }}"
description: "{{ $labels.container-name }} restarted (current value: {{ $value }}s) times in pod {{ $labels.pod-namespace }}/{{ $labels.pod-name }}
然后在吊舱日志中，我得到了这个：
="Loading configuration file failed" file=/etc/alertmanager/config/alertmanager.yaml err="yaml: unmarshal errors:n line 28: field groups not found in type config.plain"
已解决，首先需要列出所有可用规则：
kubectl -n monitoring get prometheusrules
NAME AGE
prometheus-prometheus-oper-alertmanager.rules 29h
prometheus-prometheus-oper-etcd 29h
prometheus-prometheus-oper-general.rules 29h
prometheus-prometheus-oper-k8s.rules 29h
prometheus-prometheus-oper-kube-apiserver-error 29h
prometheus-prometheus-oper-kube-apiserver.rules 29h
prometheus-prometheus-oper-kube-prometheus-node-recording.rules 29h
prometheus-prometheus-oper-kube-scheduler.rules 29h
prometheus-prometheus-oper-kubernetes-absent 29h
prometheus-prometheus-oper-kubernetes-apps 29h
prometheus-prometheus-oper-kubernetes-resources 29h
prometheus-prometheus-oper-kubernetes-storage 29h
prometheus-prometheus-oper-kubernetes-system 29h
prometheus-prometheus-oper-kubernetes-system-apiserver 29h
prometheus-prometheus-oper-kubernetes-system-controller-manager 29h
prometheus-prometheus-oper-kubernetes-system-kubelet 29h
prometheus-prometheus-oper-kubernetes-system-scheduler 29h
prometheus-prometheus-oper-node-exporter 29h
prometheus-prometheus-oper-node-exporter.rules 29h
prometheus-prometheus-oper-node-network 29h
prometheus-prometheus-oper-node-time 29h
prometheus-prometheus-oper-node.rules 29h
prometheus-prometheus-oper-prometheus 29h
prometheus-prometheus-oper-prometheus-operator 29h
然后选择一个进行编辑，或删除除默认的prometheus-prometheus-oper-general.rules之外的所有内容
我选择编辑节点导出器规则
kubectl edit prometheusrule prometheus-prometheus-oper-node-exporter -n monitoring
在文件末尾添加了这些行
- alert: RestartAlerts
annotations:
description: '{{ $labels.container }} restarted (current value: {{ $value}}s)
times in pod {{ $labels.namespace }}/{{ $labels.pod }}'
summary: More than 5 restarts in pod {{ $labels.container }}
expr: kube_pod_container_status_restarts_total{container="coredns"} > 5
for: 1min
labels:
severity: warning
不久之后，我收到了关于此警报的电子邮件。