Update Autoscaling Groups

Overview

The Update Autoscaling Groups action allows you to update the minimum, maximum, and/or desired capacity of existing Autoscaling Groups.

Read more about AWS Autoscaling Groups

Permissions

The action uses the following AWS EC2 API endpoints to target and update Autoscaling Groups:

• DescribeAutoScalingGroups
• UpdateAutoScalingGroup

Configuring the action

Targeting

Tag groups are used to target Autoscaling Groups for update.

Capacity

You can choose to update the minimum, maximum, and/or desired capacity of the targeted Autoscaling Groups resources.

Existing Settings State

You can configure this action to store the existing min, max, and default values of the targeted Autoscaling Groups before updating them, or use previously stored values when updating.

To rescale an Auto Scaling Group temporarily and then restore it to its previous settings, follow these steps:

• Enable the Store Existing Auto Scaling Group Settings option in the rule that will temporarily rescale the Auto Scaling Group
• Enable the Restore to Pre-Existing Auto Scaling Group Settings option in a second rule that will restore the original settings

• Do at least one of the following so the second rule will still run when no settings are stored:

  • Define default Minimum, Maximum and Desired values in the second rule
  • Enable the Skip ASGs Without Cached Settings option in the second rule