Set event notifications for vertical scaling tasks

Step 1: Configure event recipients

Before you begin, determine how you want to receive anomaly alerts for scaling tasks. After you decide on a notification method, you can use one of the following methods to create your event recipients.

• Notify by email, phone, or text message

  You can notify a specific person, such as an O&M engineer, about events by phone, text message, or email. For more information, see Create an alert contact group.

• Notify a group chat

  You can configure a webhook to send alert messages to a group chat in DingTalk, Lark, or WeCom. For more information, see Create an alert contact group.

• Push notifications to other cloud products

  If the previous two methods do not meet your needs, you can push event notifications to other cloud products, such as a message queue or Function Compute. In the downstream services of these products, you can define custom alert notification logic. For more information, see Create a push channel.

Step 2: Create an event subscription policy

You can subscribe to alert events for vertical scaling. If an exception occurs in your vertical scaling task, the system captures the event and sends a notification to the recipients that you configured in Step 1.

1. Log on to the Cloud Monitor console. In the navigation pane on the left, choose Event Hub > Event Subscription to open the Event Subscription page.

2. On the Subscription Policies tab, click Create Subscription Policy to open the Create Subscription Policy page.

3. In the Basic Information section, complete the configuration as prompted.

4. Configure Alert Subscription.

   The following describes the main configuration items.

   Configuration Item	Description	Example
   Subscription Type	Select System Event. System events include various cloud product failures and O&M events. Subscribe to system events to receive notifications or trigger actions in external systems when events occur.	System Event
   Product	Select Orchestration.	Orchestration
   Event Type	Select Orchestration > Status Notification.	Status Notification
   Event Name	Select Orchestration > Template Execution Status Change. You can also select Orchestration > Task Execution Status Change to receive more detailed change notifications.	Template Execution Status Change
   Event Level	Select a level as needed.	Critical
   Event Content	Enter ACS-ECS-ModifyInstanceSpec. This is the name of the OOS template that performs vertical scaling.	ACS-ECS-ModifyInstanceSpec

5. Configure Noise Reduction as needed.

6. Configure Notifications or Push & Integration.

   Complete the configuration based on the event recipient method that you configured in Step 1.

   Notify by email, phone, text message, or group chat

   If you created an alert contact group in Step 1 to receive notifications by email, phone, text message, or group chat, follow these steps to configure Notifications.

   1. Configure Notifications > Notification Configuration.

      1. From the drop-down list, click Create Notification Configuration to open the Create Notification Configuration page.

      2. Complete the configuration as prompted, and then click OK. The following table describes the configuration items.

         Configuration Item	Description	Example
         Name	Configure this item as prompted.	Vertical Scaling Notification Configuration
         Notification Settings	The default value is Set Notification Group Directly. You can also select Set Notification Group by Severity Level for more granular notifications.	Set Notification Group Directly
         Contact Group	Select the alert contact group that you created in Step 1.	test-group

   2. Configure Custom Notification Method. You can configure different notification templates and alert levels for different notification methods as required.

   Push notifications to other cloud products

   If you created a push channel in Step 1 to push notifications to other cloud products, follow these steps to configure Push & Integration.

   Under Push & Integration > Push Channel, click Add Channel and select the push channel that you created in Step 1 from the drop-down list.

7. Review the configuration and click Submit to create the event subscription policy.