launch_configuration.tf

resource "aws_launch_configuration" "demo_launch_conf" {
    name = "demo-launch-conf"
    image_id = "${var.frontend_ami}"
    instance_type = "t2.micro"
    security_groups = ["${aws_security_group.demo_frontend_alb_sg.id}"]
    key_name = "${var.key_name}"
    lifecycle {
        create_before_destroy = true
    }
}