vmalert通过在alert.rules中配置告警规则实现告警，告警规则语法与Prometheus兼容，依赖Alertmanager与prometheus-webhook-dingtalk实现钉钉告警，以下步骤：
1、构建vmalert
从源代码构建vmalert：
git clone https://github.com/VictoriaMetrics/VictoriaMetrics
cd VictoriaMetrics
make vmalert构建二进制文件将放置在VictoriaMetrics/bin文件夹中。
2、添加alert.rules
告警规则语法兼容Prometheus：
vim alert.rules#rule示例
groups:- name: test-rulerules:- alert: 主机状态expr: up == 0for: 2mlabels:status: warningannotations:summary: "{{$labels.instance}}:服务器关闭"description: "{{$labels.instance}}:服务器关闭"3、修改钉钉prometheus-webhook-dingtalk配置文件
vim /usr/local/prometheus-webhook-dingtalk/config.example.yml
4、修改alertmanager配置文件
#查看prometheus-webhook-dingtalk的url地址，altermanager会将通知像这个地址发送
journalctl -u prometheus-webhook-dingtalk -f#可以看到url urls=http://localhost:8060/dingtalk/webhook1/sendvim /usr/local/alertmanager/alertmanager.yml
5、启动vmalert
./bin/vmalert -rule=alert.rules \-datasource.url=http://localhost:8428 \-notifier.url=http://localhost:9093 &6、查看钉钉告警
