Compute - Components of EC2 Auto Scaling

Question 1

What are the two steps involved in configuring EC2 auto scaling?

Answer 1

• Creation of launch configuration or launch template
• Creation of an auto scaling group

Question 2

What are the main differences between a launch configuration and a launch template?

Answer 2

• Launch template is a newer and more advanced version of the launch configuration.
• Launch template allows for a standard configuration to simplify instance launches for auto scaling groups.
• Launch template provides more advanced features and options.

Question 3

How do you create a launch template?

Answer 3

• Go to the EC2 section in the AWS Management Console.
• Select “Launch Templates” under the “Instances” menu.
• Click on “Create Launch Template” button.
• Provide a name, description, and configure the launch template contents (e.g., AMI, instance type, security groups).
• Specify additional details such as network interfaces, storage volumes, instance tags, and advanced options.
• Click on “Create Launch Template” to create the template.

Question 4

How do you create a launch configuration?

Answer 4

• Go to the EC2 section in the AWS Management Console.
• Select “Launch Configurations” under the “Auto Scaling” menu.
• Click on “Create Launch Configuration” button.
• Select an AMI, instance type, security groups, and other configuration options.
• Configure advanced options, if needed.
• Optionally, associate a key pair.
• Click on “Create Launch Configuration” to create the configuration.

Question 5

Why is a launch configuration or launch template necessary for auto scaling?

Answer 5

• Auto scaling relies on the launch configuration or launch template to know which instance to launch and how to configure it.
• It defines the parameters required for launching instances in an auto scaling group.

Question 6

What does an auto scaling group define?

Answer 6

• Desired capacity and limitations of the group
• Scaling policies for increasing or decreasing the group size
• Resource scaling details such as availability zone selection

Question 7

How do you create an auto scaling group?

Answer 7

• Go to the EC2 section in the AWS Management Console.
• Select “Auto Scaling Groups” under the “Auto Scaling” menu.
• Click on “Create Auto Scaling Group” button.
• Choose a launch template or launch configuration.
• Configure the group name, fleet, group size, VPC, and other options.
• Set up scaling policies for increasing or decreasing group size.
• Configure notifications, tags, and review the settings.
• Click on “Create Auto Scaling Group” to create the group.