EC2 Auto Scaling

Question 1

Can I launch different types of EC2 instances in the same EC2 Auto Scaling Group?

Answer 1

Yes, but Auto Scaling Groups optimize for the case when all instance types are the same.

If you want to launch new instances, you must first update the launch configuration. This doesn’t affect existing instances.

Question 2

What happens to my EC2 instances if I delete my Auto Scaling Group?

Answer 2

The instances will be terminated.

Question 3

What is a launch configuration?

Answer 3

A template that an EC2 Auto Scaling Group uses to launch EC2 instances.

Question 4

What is the mechanism that enables you to perform custom actions by pausing instances as an Auto Scaling Group launches or terminates them.

Answer 4

Lifecycle hooks.

Question 5

What are lifecycle hooks?

Answer 5

They enable you to perform custom actions by pausing instances as an Auto Scaling Group launches or terminates them.

Question 6

Can EC2 Auto Scaling Groups span multiple regions?

Answer 6

No, but they can span AZs within a region.

Question 7

True or False: You can configure EC2 Auto Scaling to send an SNS notification whenever your Auto Scaling group scales.

Answer 7

True.