gistfile1.txt

resource "aws_security_group" "consul_server" {
    name = "consul-server-security-group"
    description = "Consul internal traffic + maintenance."

    // These are for internal traffic
    ingress {
        from_port = 0
        to_port = 65535
        protocol = "tcp"
        self = true
    }

    ingress {
        from_port = 0
        to_port = 65535
        protocol = "udp"
        self = true
    }

    // These are for maintenance
    ingress {
        from_port = 22
        to_port = 22
        protocol = "tcp"
        cidr_blocks = ["0.0.0.0/0"]
    }

    // This is for outbound internet access
    egress {
        from_port = 0
        to_port = 0
        protocol = "-1"
        cidr_blocks = ["0.0.0.0/0"]
    }
}

// ##########################################################################################
// CREATE THE CONSUL SERVER LEADER
// ##########################################################################################
resource "template_file" "leader" {
    template = "${file("${path.module}/leader_user_data.sh")}"
    vars {
        leader_dns_name = "${var.consul_domain_name_one}"
        follower_one_dns_name = "${var.consul_domain_name_two}"
        follower_two_dns_name = "${var.consul_domain_name_three}"
    }
}

resource "aws_instance" "consul_server_leader" {
    ami = "${var.ami}"
    instance_type = "${var.instance_type}"
    key_name = "${var.key_name}"
    
    tags { Name = "consul-leader" } 
    security_groups = ["${aws_security_group.consul_server.name}"]
    user_data = "${template_file.leader.rendered}"
}

resource "aws_route53_record" "consul-server-1" {
  zone_id = "Z3820KW3201KHJ"
  name = "${var.consul_domain_name_one}"
  type = "A"
  records = ["${aws_instance.consul_server_leader.private_ip}"]
}

// ##########################################################################################
// CREATE THE FIRST AND SECOND CONSUL SERVER FOLLOWERS
// ##########################################################################################
resource "template_file" "follower" {
    template = "${file("${path.module}/follower_user_data.sh")}"
    vars {
        leader_dns_name = "${var.consul_domain_name_one}"
        follower_one_dns_name = "${var.consul_domain_name_two}"
        follower_two_dns_name = "${var.consul_domain_name_three}"
    }
}

resource "aws_instance" "consul_server_follower_one" {
    ami = "${var.ami}"
    instance_type = "${var.instance_type}"
    key_name = "${var.key_name}"
    
    tags { Name = "consul-follower-one" } 
    security_groups = ["${aws_security_group.consul_server.name}"]
    user_data = "${template_file.follower.rendered}"
}

resource "aws_route53_record" "consul-server-2" {
  zone_id = "Z3820KW3201KHJ"
  name = "${var.consul_domain_name_two}"
  type = "A"
  records = ["${aws_instance.consul_server_follower_one.private_ip}"]
}

resource "aws_instance" "consul_server_follower_two" {
    ami = "${var.ami}"
    instance_type = "${var.instance_type}"
    key_name = "${var.key_name}"
    
    tags { Name = "consul-follower-two" } 
    security_groups = ["${aws_security_group.consul_server.name}"]
    user_data = "${template_file.follower.rendered}"
}

resource "aws_route53_record" "consul-server-3" {
  zone_id = "Z3820KW3201KHJ"
  name = "${var.consul_domain_name_three}"
  type = "A"
  records = ["${aws_instance.consul_server_follower_two.private_ip}"]
}