DAS (formerly known as HDM) provides the alert service. You can customize alert rules and templates in the DAS console. When an alert rule is triggered by a database instance, DAS automatically sends an alert. This topic describes how to configure and manage alert rules in the DAS console before you configure the alert service.
|Alert||ApsaraDB for RDS instance||Centralized DBGateway||DBGateway in host mode|
|Host alerts (CPU, memory, and network)||Not supported||Not supported||Supported|
|Database connection failure||Not supported||Supported||Supported|
|Active sessions of ApsaraDB RDS for MySQL instances||Supported||Supported||Supported|
|Connections of ApsaraDB RDS for MySQL instances||Supported||Supported||Supported|
|Replication delay of ApsaraDB RDS for MySQL instances||Not supported||Supported||Supported|
|Cache hit rate of ApsaraDB RDS for MySQL instances||Supported||Supported||Supported|
|Slow SQL queries of ApsaraDB RDS for MySQL instances per hour||Supported||Supported||Supported|
|Replication interruption of ApsaraDB RDS for MySQL instances||Not supported||Supported||Supported|
|Connected ApsaraDB for Redis clients||Supported||Supported||Supported|
|Blocked ApsaraDB for Redis clients||Supported||Supported||Supported|
|Cache hit rate of ApsaraDB for Redis instances||Supported||Supported||Supported|
|Memory fragmentation rate of ApsaraDB for Redis instances||Supported||Supported||Supported|
|Connections of ApsaraDB for MongoDB instances||Supported||Supported||Supported|
|Cache usage of ApsaraDB for MongoDB instances||Supported||Supported||Supported|
|Current operations to be performed on ApsaraDB for MongoDB instances||Supported||Supported||Supported|
|Dirty data percentage in cache of ApsaraDB for MongoDB instances||Supported||Supported||Supported|
|Slow SQL queries of ApsaraDB for MongoDB instances per hour||Not supported||Supported||Supported|
Log on to the DAS console.
In the left-side navigation pane, choose Alert Service > Alert Rules.
On the Alert Rules page, click Add Rule in the upper-right corner.
In the Add Rule dialog box that appears, configure the parameters described in the following table. Then, click OK.
Parameter Description Rule Name Enter a name for the alert rule. Type Set Event Alert or Threshold Alert. Description Enter a specific description for the alert rule based on the selected alert type. Alert Interval Set the interval at which to send alerts when the alert rule is triggered. Effective Time Set the time when the alert rule starts to take effect. Notification Method Select the method to send alerts, such as SMS, DingTalk chatbot, and email.
After the alert rule is created, you can perform subsequent alert configuration operations. For more information, see Configure alerts.