Enable event notification for vertical scaling tasks

Step 1: Configure an event notification receiver

Before proceeding, specify where Auto Scaling should send event notifications for vertical scaling exceptions. You can configure a receiver by using one of these methods:

• Notify by email, call, or text message

  Enable Auto Scaling to send event notifications via email, text message, or phone call to designated employees, like O&M staff. For more information, see Create an alert contact group.

• Notify by @mention

  Configure webhooks to send Auto Scaling event notifications to DingTalk, Lark, or WeCom group chats. For more information, see Create an alert contact group.

• Notify by other cloud services

  If the previous methods don't meet your needs, enable Auto Scaling to send event notifications to Alibaba Cloud services like Simple Message Queue (SMQ) or Function Compute. You can then configure custom notification logic through these services. For more information, see Create a push channel.

Step 2: Create an event subscription policy

If a vertical scaling task fails after you set up an event subscription policy, Auto Scaling captures the event and notifies the receiver specified in Step 1.

1. Log on to the CloudMonitor console. In the left-side navigation pane, choose EventCenter > Event Subscription. Then, go to the Event Subscription page.

2. On the Subscription Policy tab, click Create Subscription Policy and go to the Create Subscription Policy wizard.

3. Configure the parameters in the Basic information step as prompted.

4. Configure the parameters in the Alert Subscription step as prompted.

   The following table describes the parameters.

   Parameter	Description	Example

   Parameter	Description	Example
   Subscription Type	Set this parameter to System events. System events track cloud service faults and operational issues. By subscribing, you can receive timely notifications or trigger external actions when events occur.	System events
   Product	Select CloudOps Orchestration Service (OOS).	CloudOps Orchestration Service (OOS)
   Event Type	Choose CloudOps Orchestration Service (OOS) > Status Notification.	Status Notification
   Event Name	Choose CloudOps Orchestration Service (OOS) > Execution:Status Change. You can also choose CloudOps Orchestration Service (OOS) > TaskExecution:Status Change to obtain more detailed change notifications.	Execution:Status Change
   Event Level	Select an event level based on your business requirements.	Critical
   Event Content	Enter ACS-ECS-ModifyInstanceSpec. This is the OOS template that is executed to enable automatic vertical scaling.	ACS-ECS-ModifyInstanceSpec

5. Configure the parameters in the Combined noise reduction step based on your business requirements.

6. Configure the parameters in the Notification and Push and Integration steps.

   Perform the following operations based on the event notification method that is configured in Step 1:

   Notify by email, call, text message, or @mention

   Notify by other cloud services

   To send event notifications via email, phone call, text message, or group chat, first create an alert contact group (as described in Step 1). Then, configure the parameters in the Notification step.

   1. Choose Notification > Notification Configuration.

      1. In the Notification Configuration drop-down list, click Create Notification Configuration to go to the Create Notification Configuration panel.

      2. Follow the on-screen instructions to configure parameters and click OK. The following table describes the parameters.

         Parameter	Description	Example
         Name	Enter a name as prompted.	Vertical scaling notification
         Notification Settings	The default value is Set the notification group directly. You can also select Set the notification group by severity to enable finer-grained event notification.	Set the notification group directly
         Contact Group	Select the alert contact group that is created in Step 1.	test-group

   2. Configure custom notification methods. You can follow the on-screen instructions to set up custom notification templates and alert levels for each notification method.

   To send event notifications to other cloud services, configure the parameters in the Push and Integration step if you've already created a push channel (as described in Step 1).

   Choose Push and Integration > Push Channel. Click +Add Channel. Then, select the push channel that is created in Step 1 from the drop-down list.

7. Check the configurations and click Submit to complete policy creation.