egarbi/terraform-aws-alb-per-host

This create an internet-facing ALB with support to forward traffic based on host field in the HTTP header.

AWS ALB per Host Terraform module

Terraform module which create an internet-facing ALB supporting host-based routing. This can be used to expose that need public access. For instance, an ngnix proxy, or your own web app. The same ALB can be shared with several different public services. If you plan to use it for more than 1 service make sure your SSL certificate match all your domain name services, This is seen as Certificate Subject Alt Name field.

Usage

variable "hosts" {
  description = "This hosts will be added as dns names and rules for forwarding traffic"
  default = {
    "diminutive" = "bundles"
    "phineas"    = "rates"
    "microbots"  = "payments"
    "django"     = "calls"
  }
}


// Please keep the same order on maps here and above
variable "ports" {
  description = "This ports will be used in the ALB listener definition for each service"
  default = {
    "diminutive" = "80"
    "phineas"    = "8080"
    "microbots"  = "8000"
    "django"     = "8080"
  }
}

module "webALB" {
  source                = "git::https://github.com/egarbi/terraform-aws-alb-per-host"
  name                = "web-example"
  subnet_ids          = [ "subnet-AZa", "subnet-AZb", "subnet-AZc" ]
  environment         = "testing"
  security_groups     = [ "sg-3546635" ]
  vpc_id              = "vpc-183763"
  log_bucket          = "alb-logs"
  zone_id             = "ZDOXX02XXUITZ"
  ssl_arn             = "arn:aws:acm:eu-west-1:12345678901:certificate/abcd54-06sbdh5-js64-hsg36sjsm34"
  ssl_policy          = "ELBSecurityPolicy-2015-05"
  hosts               = "${values(var.hosts)}"
  ports               = "${values(var.ports)}"
  services            = "${keys(var.hosts)}"
}