Before you can configure an Auto Scaling group, you must first create a ‘Launch Configuration’.  This is the template that defines how each of the new instances will be provisioned.

Make sure you’ve already created a Load Balancer CLASSIC and Target Group

• it did not see my Application LB!

• EC2 > Auto Scaling > Launch Configurations > [Create Auto Scaling group] > [Create launch configuration]
• AWS Linux AMI > t2.micro
• Create Launch Configuration
  • Name: Autoscale
  • IAM role: S3Admin
  • Advanced Details
    • User data (This is your startup script)

    • #! /bin/bash
      yum update -y
      yum install httpd -y
      aws s3 cp s3://thomasandsofia /var/www/html --recursive
      service httpd start
      chkconfig httpd on

    • IP Address Type
      • Only assign a public IP
  • Add Storage
  • Select Security Group
• Create Auto Scaling Group
  • Create an Auto Scaling group from an existing launch configuration
    • Select you Launch Config
  • Group name: HelloAuto
  • Group size: start with [2] instances
  • Network (Defaults to your VPC)
  • Subnet (Select all AZ available!)
  • Advanced Details
    • [x] Load Balancing
    • Classic Load Balancers > Select your LB
    • Target Groups > Select your Target Group
  • [Next]
  • (*) Keep this group at its initial size