Implement automatic resource monitoring by group based on tags

Step 1: Create instances that are bound with the same tag

You can create instances that are bound with the same tag or bind a tag to existing instances. For more information, see Create or bind a tag. Alternatively, you can perform the following operations to use Auto Scaling to bind a tag to the instances in a scaling group:

1. Log on to the Auto Scaling console.
2. Create a scaling group.
   For more information, see Create a scaling group. In this example:

   • Specify Multi-zone Scaling Policy to implement high-availability automatic scaling based on your business requirements.
   • Set Minimum Number of Instances to 4.

   
3. Create a scaling configuration.
   For more information, see Create a scaling configuration. You must bind the testKey:testValue tag on the System Configurations (Optional) page.
4. Go to the scaling group details page, click the Instances tab, and then view the ECS instances that are automatically created in the scaling group.
   

Step 2: Create a Cloud Monitor application group

1. Log on to the Cloud Monitor console.
2. Create a Cloud Monitor application group. For more information, see Create an application group.
   In this example, select Smart tag synchronization creation as the creation method and add the testKey:testValue tag to the matching rule to create an application group. Then, the instances that are bound with this tag are assigned to the created application group.
   1. Select Smart tag synchronization creation for Creation method.
      
   2. In the Match Rule section, set Resource Tag Key to testKey and specify the Tag Value parameter. You can set a tag value range. In this example, the tag value range is Contain testValue.
      

Step 3: View monitoring information about the ECS instances

You can use one of the following methods to view the information about the ECS instances:

Method 1: View the monitoring information about the ECS instances based on their application group in the Cloud Monitor console.

1. Log on to the Cloud Monitor console.
2. In the left-side navigation pane, click Application Groups.
3. In the search bar, select Resource tags and enter testKey to search for the application group.
   
4. Click testKey-testValue-53** / 22****** in the Group Name / Group ID column to view the resources in the group.
   The automatically created ECS instances in the scaling group are automatically assigned to the application group.

Method 2: View the monitoring information about the ECS instances in the ECS console.

1. Log on to the ECS console.
2. In the left-side navigation pane, click Tags.
3. In the top navigation bar, select a region.
4. On the Tags tab of the Tags page, click Custom Tags.
   On the All Custom Tags page, click Enable in the Automatically Create Cloud Monitoring Application Groups column to create a Cloud Monitor application group. In the Automatically Create Cloud Monitoring Application Groups column, Enabled is displayed with a green check mark for the tags for which application group are created.
5. Enter testKey in the search box to search for the tag.
6. Click View Monitoring Information in the Cloud Monitoring Application Group column.
   
   Go to the CloudMonitor tab to view the monitoring, alert, and event information about the ECS instances in the application group that correspond to this key.