AWS Administration Cookbook

How to do it...

1. Start by defining the template version and description:

      AWSTemplateFormatVersion: "2010-09-09"      Description: Create an Auto Scaling Group

2. Add a Parameters section with the required parameters that will be used later in the template:

      Parameters:        SubnetIds:          Description: Subnet IDs where instances can be launched          Type: List<AWS::EC2::Subnet::Id>

3. Still under the Parameters section, add the optional instance configuration parameters:

      AmiId:         Description: The application server's AMI ID         Type: AWS::EC2::Image::Id         Default: ami-9be6f38c # AWS Linux in us-east-1       InstanceType:         Description: The type of instance to launch         Type: String         Default: t2.micro

4. Still under the Parameters section, add the optional auto scaling ...