Troubleshooting auto-scaling group

Question 1

True or false: An EC2 instance will not launch if the associated key pair does not exist?

Answer 1

True. There must always be a Key Pair for an EC2 instance to launch

Question 2

True or False: If a security group no longer exists but is configured as part of an autoscaling group, AWS will automatically recreate it?

Answer 2

False. If the security group no longer exists, new EC2 instances will fail to launch.

Question 3

True or false, if an instance type is no longer supported in an AZ, but is part of an autoscaling config, the EC2 instance will fail to launch?

Answer 3

True

Question 4

True or False: If an EBS device mapping becomes invalid, AWS will create a new EBS volume of the same type and the EC2 instance will launch as expected

Answer 4

False. An invalid EBS volume device mapping will lead to a failed instance launch.

Question 5

True or False: It is possible to attach an EBS block device to the AMI instance store

Answer 5

False. EBS volumes must be separate from the instance store. Attempting to attach EBS to instance store will result in a failed autoscaling group launch.

Question 6

True or False: If Autoscaling config is not working, current autoscaling launches will still succeed.

Answer 6

False. If Autoscaling config is not working, all instance launch attempts will fail.

Question 7

True or False: If your autoscaling group can no longer be found, your auto scaling groups instance launch will fail.

Answer 7

True

Question 8

True or False: If an AZ is no longer supported by AWS, will your autoscaling group continue to launch instances?

Answer 8

No. Your auto-scaling group will need to be updated to a new AZ.

Question 9

True or False: Autoscaling is available to all IAM users regardless of role?

Answer 9

False. Autoscaling groups created by an IAM role without autoscaling permissions will fail to run.