Terraform module to create an ALB, default ALB listener(s), and a default ALB target and related security groups.
Tip
Cloud Posse uses atmos
to easily orchestrate multiple environments using Terraform.
Works with Github Actions, Atlantis, or Spacelift.
Watch demo of using Atmos with Terraform

Example of running
atmos
to manage infrastructure from our Quick Start tutorial.
For a complete example, see examples/complete.
For automated test of the complete example using bats
and Terratest
, see test.
provider "aws" {
region = var.region
}
module "vpc" {
source = "cloudposse/vpc/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"
namespace = var.namespace
stage = var.stage
name = var.name
delimiter = var.delimiter
attributes = var.attributes
ipv4_primary_cidr_block = "10.0.0.0/16"
assign_generated_ipv6_cidr_block = true
tags = var.tags
}
module "subnets" {
source = "cloudposse/dynamic-subnets/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
delimiter = var.delimiter
availability_zones = var.availability_zones
vpc_id = module.vpc.vpc_id
igw_id = module.vpc.igw_id
cidr_block = module.vpc.vpc_cidr_block
nat_gateway_enabled = false
nat_instance_enabled = false
tags = var.tags
}
module "alb" {
source = "cloudposse/alb/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"
namespace = var.namespace
stage = var.stage
name = var.name
attributes = var.attributes
delimiter = var.delimiter
vpc_id = module.vpc.vpc_id
security_group_ids = [module.vpc.vpc_default_security_group_id]
subnet_ids = module.subnets.public_subnet_ids
internal = var.internal
http_enabled = var.http_enabled
http_redirect = var.http_redirect
access_logs_enabled = var.access_logs_enabled
cross_zone_load_balancing_enabled = var.cross_zone_load_balancing_enabled
http2_enabled = var.http2_enabled
idle_timeout = var.idle_timeout
ip_address_type = var.ip_address_type
deletion_protection_enabled = var.deletion_protection_enabled
deregistration_delay = var.deregistration_delay
health_check_path = var.health_check_path
health_check_timeout = var.health_check_timeout
health_check_healthy_threshold = var.health_check_healthy_threshold
health_check_unhealthy_threshold = var.health_check_unhealthy_threshold
health_check_interval = var.health_check_interval
health_check_matcher = var.health_check_matcher
target_group_port = var.target_group_port
target_group_target_type = var.target_group_target_type
stickiness = var.stickiness
alb_access_logs_s3_bucket_force_destroy = var.alb_access_logs_s3_bucket_force_destroy
alb_access_logs_s3_bucket_force_destroy_enabled = var.alb_access_logs_s3_bucket_force_destroy_enabled
tags = var.tags
}
Important
In Cloud Posse's examples, we avoid pinning modules to specific versions to prevent discrepancies between the documentation and the latest released versions. However, for your own projects, we strongly advise pinning each module to the exact version you're using. This practice ensures the stability of your infrastructure. Additionally, we recommend implementing a systematic approach for updating versions to avoid unexpected changes.
Check out these related projects.
- terraform-aws-alb-ingress - Terraform module to provision an HTTP style ingress rule based on hostname and path for an ALB
Tip
Use Cloud Posse's ready-to-go terraform architecture blueprints for AWS to get up and running quickly.
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