建立警告与通知的主要步骤：
```
创建和配置AlertManager
启动prometheus时，通过-alertmanager.url配置alertmanager地址，使prometheus与alertmanager建立链接
```

#### 创建配置文件alertmanager.yaml
```
global:
  resolve_timeout: 5m
route:
  group_by: ['ops']
  group_wait: 10s #组报警等待时间
  group_interval: 10s #组报警间隔时间
  repeat_interval: 1m #重复报警间隔时间
  receiver: 'web.hook'
receivers:
  - name: 'web.hook'
    webhook_configs:
      - url: 'http://10.211.55.2:8888/open/test'
inhibit_rules:
  - source_match:
      severity: 'critical'
    target_match:
      severity: 'warning'
    equal: ['alertname', 'dev', 'instance']
```