gistfile1.txt

resource "aws_launch_configuration" "gocd_agent" {
    image_id = "${var.ami}"
    name_prefix = "gocd-agent-launch-configuration"
    instance_type = "${var.instance_type}"
    security_groups = ["${aws_security_group.gocd_agent.id}"]
    associate_public_ip_address = false
    ebs_optimized = false
    key_name = "${var.key_name}"
    iam_instance_profile = "${aws_iam_instance_profile.gocd_agent.id}"
    user_data = "${template_file.init.rendered}"
    lifecycle {create_before_destroy = true}
}

resource "aws_autoscaling_group" "gocd_agent" {
    launch_configuration = "${aws_launch_configuration.gocd_agent.id}"
    vpc_zone_identifier = ["${split(",", var.public_subnets)}"]
    lifecycle { create_before_destroy = true }
    health_check_grace_period = "900"
    health_check_type = "EC2"
    load_balancers = ["${aws_elb.gocd_elb.name}"]

    name = "gocd-agent-autoscaling-group - ${aws_launch_configuration.gocd_agent.id}"

    max_size = "${var.number_of_instances}"
    min_size = "${var.minimum_number_of_instances}"
    desired_capacity = "${var.number_of_instances}"
    default_cooldown = 30
    
    tag {
        key = "Name"
        value = "gocd-agent"
        propagate_at_launch = true
    }

    tag {
        key = "role"
        value = "gocd-agent"
        propagate_at_launch = true
    }
}