data "aws_ami" "consul" { most_recent = true owners = var.ami_owners filter { name = "virtualization-type" values = ["hvm"] } filter { name = "is-public" values = ["false"] } filter { name = "name" values = ["consul-ubuntu-*"] } } # --------------------------------------------------------------------------------------------------------------------- # Deploy consul cluster # --------------------------------------------------------------------------------------------------------------------- module "consul_servers" { source = "git::git@github.com:hashicorp/terraform-aws-consul.git//modules/consul-cluster?ref=v0.8.0" cluster_name = "${var.cluster_name}-server" cluster_size = var.num_servers instance_type = var.instance_type cluster_tag_key = var.cluster_tag_key cluster_tag_value = var.cluster_name ami_id = var.consul_ami_id == null ? data.aws_ami.consul.id : var.consul_ami_id user_data = data.template_file.user_data_server.rendered vpc_id = module.vpc.vpc_id subnet_ids = module.vpc.public_subnets allowed_ssh_cidr_blocks = ["0.0.0.0/0"] allowed_inbound_cidr_blocks = ["0.0.0.0/0"] ssh_key_name = module.keys.key_name } module "consul_clients" { source = "git::git@github.com:hashicorp/terraform-aws-consul.git//modules/consul-cluster?ref=v0.8.0" cluster_name = "${var.cluster_name}-client" cluster_size = var.num_clients instance_type = var.instance_type cluster_tag_key = var.cluster_tag_key cluster_tag_value = var.cluster_name ami_id = var.consul_ami_id == null ? data.aws_ami.consul.id : var.consul_ami_id user_data = data.template_file.user_data_client.rendered vpc_id = module.vpc.vpc_id subnet_ids = module.vpc.public_subnets allowed_ssh_cidr_blocks = ["0.0.0.0/0"] allowed_inbound_cidr_blocks = ["0.0.0.0/0"] ssh_key_name = module.keys.key_name } # --------------------------------------------------------------------------------------------------------------------- # This script will configure and start Consul agents # --------------------------------------------------------------------------------------------------------------------- data "template_file" "user_data_server" { template = file("${path.module}/user-data-server.sh") vars = { consul_version = var.consul_version consul_download_url = var.consul_download_url cluster_tag_key = var.cluster_tag_key cluster_tag_value = var.cluster_name } } data "template_file" "user_data_client" { template = file("${path.module}/user-data-client.sh") vars = { consul_version = var.consul_version consul_download_url = var.consul_download_url cluster_tag_key = var.cluster_tag_key cluster_tag_value = var.cluster_name } } # # Set up ALB for test-servers to talk to consul clients # module "alb" { source = "terraform-aws-modules/alb/aws" version = "~> 5.0" name = "${var.cluster_name}-alb" load_balancer_type = "application" vpc_id = module.vpc.vpc_id subnets = module.vpc.public_subnets security_groups = [module.consul_clients.security_group_id] internal = true target_groups = [ { #name_prefix has a six char limit name_prefix = "test-" backend_protocol = "HTTP" backend_port = 8500 target_type = "instance" health_check = { interval = 5 timeout = 3 protocol = "HTTP" healthy_threshold = 2 path = "/v1/status/leader" } } ] http_tcp_listeners = [ { port = 8500 protocol = "HTTP" target_group_index = 0 } ] } # Attach ALB to Consul clients resource "aws_autoscaling_attachment" "asg_attachment_bar" { autoscaling_group_name = module.consul_clients.asg_name alb_target_group_arn = module.alb.target_group_arns[0] }