Auto Scaling triggers scale-in or scale-out events only in scaling groups that are in the Enabled state. If you disable scaling groups, Auto Scaling does not trigger scale-out or scale-in events in the scaling groups.
Usage notes
Before you enable a scaling group, make sure that the scaling group configurations and instance configuration source meet your business requirements. This ensures that scaling events are triggered as expected.
Before you disable a scaling group, consider the best time to do so. For example, you can disable a scaling group during off-peak periods or maintenance windows.
After you disable a scaling group, any ongoing scaling events still occur. However, any new requests to trigger scaling events in the scaling group will be denied. After you disable a scaling group, existing instances in the scaling group will not be released.
Procedure
Log on to the Auto Scaling console.
In the left-side navigation pane, click Scaling Groups.
In the top navigation bar, select a region.
Enable or disable a scaling group.
Enable a scaling group: Find the scaling group that you want to enable and choose
> Enable in the Actions column. In the Enable Scaling Group message, click OK. Then, the scaling group enters the Enabled state. Disable a scaling group: Find the scaling group that you want to disable and choose
> Disable in the Actions column. In the Disable Scaling Group message, click OK. Then, the scaling group enters the Disabled state.
References
For information about how to enable a scaling group by calling an API operation, see EnableScalingGroup.
For information about how to disable a scaling group by calling an API operation, see DisableScalingGroup.