feature: add alertmanager function

config/email.tmpl

@@ -1,13 +1,13 @@
 {{ define "email.to.html" }}
 {{ range .Alerts }}
-
+---------------------------------------------------------
 告警程序: prometheus_alert<br>
 告警级别: {{ .Labels.severity }} 级<br>
 告警类型: {{ .Labels.alertname }}<br>
 故障主机: {{ .Labels.instance }}<br>
 故障服务: {{ .Labels.job }}<br>
 告警主题: {{ .Annotations.summary }}<br>
 触发时间: {{ .StartsAt.Format "2020-01-02 15:04:05"}} <br>
-
+----------------------------------------------------------
 {{ end }}
 {{ end }}

config/instanceDown_rules.yml

@@ -1,11 +1,11 @@
 groups:
-  - name: node_down
+  - name: instance_down
     rules:
       - alert: InstanceDown
         expr: up == 0
         for: 1m
         labels:
-          user: test
+          severity: critical
         annotations:
           summary: "Instance {{ $labels.instance }} down"
           description: "{{ $labels.instance }} of job {{ $labels.job }} has been down for more than 1 minutes."