This topic describes how to apply a scaling configuration. You can create multiple scaling configurations for a scaling group and apply one as required.

Background information

After you apply a scaling configuration, the scaling configuration enters the Active state. Only one scaling configuration can be applied in a scaling group. After a scaling configuration is applied, if you apply another scaling configuration, the previous scaling configuration enters the Inactive state.


  1. Log on to the Auto Scaling console.
  2. In the top navigation bar, select a region.
  3. You can use either of the following methods to open the details page of a scaling group.
    • In the Scaling Group Name/ID column, click a scaling group name.
    • Click Manage in the Actions column corresponding to a scaling group.
  4. In the left-side navigation pane, click Instance Configuration Source.
  5. Find the target scaling configuration and click Apply in the Actions column.
  6. Click OK.


After you apply a scaling configuration, the scaling group creates ECS instances based on the scaling configuration when a scale-out activity is triggered.