Modifying an AS Group

Scenarios

You can modify an AS group if needed. The settings of the following parameters can be changed: Name, Max. Instances, Min. Instances, Expected Instances, Health Check Method, Health Check Interval, Instance Removal Policy, Cooldown Period, and Multi-AZ Scaling Policy.

Changing the value of Expected Instances will trigger a scaling action. AS will automatically increase or decrease the number of instances to the value of Expected Instances.

If the AS group is not enabled, contains no instance, and has no scaling action ongoing, you can modify Subnet configurations. If an AS group has no scaling action ongoing, you can modify its AZ and Load Balancing configurations.

Procedure

1. Log in to the management console.
2. Under Compute, click Auto Scaling. In the navigation pane on the left, choose Instance Scaling. Then click the AS Groups tab.

3. In the AS group list, locate the AS group you want to modify and choose More > Modify in the Operation column.

   You can also click the AS group name to switch to the Overview page, and click Modify in the upper right corner.

4. In the Modify AS Group dialog box, modify related data, for example, the expected number of instances.
5. Click OK.