An image contains information that is required to create Elastic Compute Service (ECS) instances, such as the system and application environments, and related software configurations. Images in scaling configurations must be frequently updated to meet changing business requirements. This topic describes how to manually update an image in a scaling configuration.

Background information

You can manually update images only for scaling groups that contain ECS instances. You cannot update images for scaling groups that contain elastic container instances.


  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. Find a scaling group and go to the details page of the scaling group. You can use one of the following methods to go to the details page:
    • Click the ID of the scaling group in the Scaling Group Name/ID column.
    • Click Details in the Actions column of the scaling group.
  5. In the upper part of the page, click the Instance Configuration Sources tab.
  6. On the page that appears, click the Scaling Configurations tab.
  7. On the Scaling Groups page, find the scaling group that you want to manage and click Edit Image in the Actions column.
    Note You can edit the image regardless of whether the scaling configuration is in the Active or Inactive state.
  8. In the Edit Image dialog box, select an image type and an image of the selected type. Then, click OK.
    The following image types are supported: Public Image, Custom Image, and Shared Image.
    After the image is updated, you can view the Image column that corresponds to the scaling configuration. If the name of the new image is displayed, the image is updated.