You can set alert rules for metrics in host monitoring, instances in cloud service monitoring, and metrics in custom monitoring. You can set the application scope of an alert rule to all resources, an application group, and a single instance.

Cloud Monitor can send alert notifications by means of emails or DingTalk chatbots. If you use TradeManager, you can receive alert notifications only on TradeManager for PCs. You can also install the Alibaba Cloud app to receive alert notifications.

Alert rules for host monitoring

You can set alert rules for all metrics in host monitoring. Cloud Monitor supports a minimum alert detection frequency of once per minute.

Alert rules for cloud service monitoring

You can set threshold-triggered alert rules for performance consumption metrics of resources in various cloud services. You can also set event-triggered alert rules based on the status of instances or services.

Alert rules for custom monitoring

After you call the PutCustomMetric API operation to report custom monitoring data, you can set alert rules for custom metrics. When a metric value reaches the specified threshold, Cloud Monitor sends an alert notification in the specified method.

Custom event-triggered alert rules

After you call the PutCustomEvent API operation to report custom events, you can set alert rules for the events. When a reported event matches an alert condition, Cloud Monitor sends an alert notification in the specified method.