This topic describes how to modify a scaling configuration. You can modify the parameters of a scaling configuration based on your actual needs after it is created.

Background information

For more information about the parameters of a scaling configuration, see Create an instance by using the provided wizard. Modifying a scaling configuration does not affect the ECS instances that have been created by using the scaling configuration. These ECS instances can still run properly.

Procedure

  1. Log on to the Auto Scaling console.
  2. In the left-side navigation pane, click Scaling Groups.
  3. In the top navigation bar, select a region.
  4. 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.
  5. In the left-side navigation pane, click Instance Configuration Source.
  6. Find the target scaling configuration and click Modify in the Actions column.
  7. On the Basic Configurations page that appears, configure Billing Method, Instance Type, Image, Storage, Network Billing Method, and Security Group. Click Next: System Configurations.
    Note In the basic configurations:
    • Billing method: only Pay-As-You-Go and Preemptible Instance are supported.
    • Instance: Multiple instance types are supported. When the inventory of a specific instance type is insufficient, alternate instance types will be used to improve the scaling success rate.
  8. On the System Configurations page, configure Tags (optional), Resource Groups (optional), Logon Credentials, Instance Name (optional), and advanced options (optional). Click Next: Preview.
    Note Advanced options are available only for scaling configurations in a VPC-type scaling group. The options include RAM Role and User Data.
  9. Check you configurations, enter the name of the scaling configuration, and click Modify.
    Note Modifying a scaling configuration does not affect the ECS instances that have been created by using the scaling configuration. These ECS instances can still run properly.