• Auto Scaling

  1. Help Center
  2. Auto Scaling
  3. User Guide
  4. AS Management
  5. AS Groups
  6. Modifying an AS Group

Modifying an AS Group

You can modify an AS group as needed. The values of the following parameters can be changed: NameMax. InstancesMin. InstancesExpected InstancesCooldown Period, Health Check MethodHealth Check IntervalHealth Check Grace PeriodInstance Removal Policy, EIP, and Notification Mode.


Changing the value of Expected Instances will trigger a scaling action. Then, AS automatically increases or decreases the number of instances to the value of Expected Instances.

If the AS group is not enabled and does not contain any ECS instances, and no scaling action is being performed, you can also modify AZSubnet, and ELB configurations.


  1. Log in to the management console.
  2. Click in the upper left corner and select the desired region and project.
  3. Under Computing, click Auto Scaling. In the navigation pane on the left, choose Instance Scaling.
  1. In the AS group list, locate the row containing the target AS group and click the AS group name to switch to the Basic Information page of the AS group.

    Click Modify in the upper right corner of the Basic Information page.

    You can also locate the row containing the target AS group and choose More > Modify in the Operation column.

  2. Change parameter settings. For example, change the value of Expected Instances.
  3. Click OK.