Autoscaling Group Settings

Answer - A and C.

You can temporarily suspend the creation of new instances by either reducing the maximum capacity to 2 so that the current instances running which is 2 matches the maximum limit.

Secondly, you can suspend the launch process of the Autoscaling Groups.

The AWS Documentation mentions.

Scaling Processes.

Amazon EC2 Auto Scaling supports the following scaling processes:

Launch.

Adds a new EC2 instance to the group, increasing its capacity.

Warning.

If you suspend Launch, this disrupts other processes.

For example, you can't return an instance in a standby state to service if the Launch process is suspended, because the group can't scale.

For more information on Autoscaling Suspend and Resume, please visit the below URL:

http://docs.aws.amazon.com/autoscaling/latest/userguide/as-suspend-resume-processes.html

To choose the correct answer, we first need to understand the purpose of each setting:

• Minimum capacity: The minimum number of instances that should be running in the Autoscaling group at all times.
• Desired capacity: The desired number of instances that should be running in the Autoscaling group at any given time.
• Maximum capacity: The maximum number of instances that can be launched in the Autoscaling group.

Based on these definitions, here's an explanation of each answer option:

A. Change the Maximum capacity to 2 This option will limit the number of instances that can be launched in the Autoscaling group to 2. However, if the current Desired capacity is higher than 2, this setting won't have any effect on reducing the number of instances.

B. Change the Desired capacity to 4 This option will increase the Desired capacity of the Autoscaling group to 4. If the current number of instances is less than 4, new instances will be launched. If the current number of instances is greater than 4, the Autoscaling group will terminate the excess instances.

C. Suspend the Launch process of the Autoscaling Group This option will stop the Autoscaling group from launching new instances. It's useful when you want to prevent new instances from being launched temporarily. However, it won't have any effect on the current instances running in the group.

D. Change the Minimum capacity to 2 This option will increase the minimum number of instances in the Autoscaling group to 2. If the current number of instances is less than 2, new instances will be launched. If the current number of instances is greater than 2, the Autoscaling group won't terminate any instances.

Based on the current settings and the available options, the best option to reduce the number of instances in the Autoscaling group is option D - Change the Minimum capacity to 2. This will reduce the number of instances in the group to 2 if there are currently more than 2 instances running. Once the group's size is reduced, you can consider changing the Desired capacity to a lower number to prevent the Autoscaling group from launching new instances.