prometheus告警规则怎么配置

Prometheus告警规则的配置主要包括以下几个步骤：

1、安装并配置Alertmanager

2、创建告警规则文件

3、在Prometheus配置文件中引用告警规则文件

4、重启Prometheus和Alertmanager服务

下面是详细的配置过程：

安装并配置Alertmanager

1、下载Alertmanager的二进制文件：

wget https://github.com/prometheus/alertmanager/releases/download/v0.21.0/alertmanager0.21.0.linuxamd64.tar.gz

2、解压下载的文件：

tar xzf alertmanager0.21.0.linuxamd64.tar.gz

3、进入解压后的目录：

cd alertmanager0.21.0.linuxamd64

4、创建配置文件alertmanager.yml，并编辑内容：

global:
  resolve_timeout: 5m
route:
  group_by: ['alertname', 'cluster', 'service']
  group_wait: 30s
  group_interval: 5m
  repeat_interval: 3h
  receiver: 'email'
receivers:
name: 'email'
  email_configs:
  to: 'youremail@example.com'
    from: 'alertmanager@example.com'
    smarthost: 'smtp.example.com:587'
    auth_username: 'youremail@example.com'
    auth_password: 'youremailpassword'
templates:
'/etc/alertmanager/template/*.tmpl'

5、创建模板文件templates/mytemplate.tmpl，并编辑内容：

{{ define "mytemplate" }}
ALERT {{ $labels.alertname }} {{ $labels.cluster }} {{ $labels.service }} {{ $labels.instance }} is {{ $value }}!
{{ end }}

创建告警规则文件myrules.yml，并编辑内容

groups:
name: example_rules
  rules:
  alert: HighRequestLatency
    expr: job:request_latency_seconds:mean5m{job="myjob"} > 0.5
    for: 10m
    labels:
      severity: page
    annotations:
      summary: "High request latency"
      description: "Request latency is more than 0.5 seconds."

在Prometheus配置文件中引用告警规则文件myrules.yml

rule_files:
  "myrules.yml"

重启Prometheus和Alertmanager服务

killall prometheus && killall alertmanager && nohup ./alertmanager config.file=alertmanager.yml & nohup ./prometheus config.file=prometheus.yml & sleep infinity & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & tail f /dev/null & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep f prometheus) & wait $(pgrep f alertmanager) & wait $(pgrep