scottslowe-learning-tools/terraform/aws/ic-module-asg/modules/ic-asg/main.tf

# Create a launch configuration for the instance cluster
resource "aws_launch_configuration" "lc" {
  name                        = "${var.name}-lc"
  associate_public_ip_address = "${var.assign_pub_ip}"
  image_id                    = "${var.ami}"
  instance_type               = "${var.type}"
  key_name                    = "${var.ssh_key}"
  security_groups             = ["${var.sec_group_list}"]

  lifecycle {
    create_before_destroy = true
  }
}

# Create an Auto Scaling group for the instance cluster
resource "aws_autoscaling_group" "asg" {
  name                 = "${var.name}-asg"
  min_size             = "${var.min_size}"
  max_size             = "${var.max_size}"
  desired_capacity     = "${var.min_size}"
  vpc_zone_identifier  = ["${var.subnet_list}"]
  launch_configuration = "${aws_launch_configuration.lc.name}"

  lifecycle {
    create_before_destroy = true
  }
}