UPGRADES.md

Terraform Manifest Upgrades

Step-01: c10-02-ELB-classic-loadbalancer.tf

# Terraform AWS Classic Load Balancer (ELB-CLB)
module "elb" {
 source  = "terraform-aws-modules/elb/aws"
 #version = "2.5.0"
 version = "4.0.1"
 name = "${local.name}-myelb"
 subnets         = [
   module.vpc.public_subnets[0],
   module.vpc.public_subnets[1]
 ]
 #security_groups = [module.loadbalancer_sg.this_security_group_id]
 security_groups = [module.loadbalancer_sg.security_group_id]
 #internal        = false

 listener = [
   {
     instance_port     = 80
     instance_protocol = "HTTP"
     lb_port           = 80
     lb_protocol       = "HTTP"
   },
   {
     instance_port     = 80
     instance_protocol = "HTTP"
     lb_port           = 81
     lb_protocol       = "HTTP"
   },
 ]

 health_check = {
   target              = "HTTP:80/"
   interval            = 30
   healthy_threshold   = 2
   unhealthy_threshold = 2
   timeout             = 5
 }

 # ELB attachments
 number_of_instances = var.private_instance_count
 #instances           = [module.ec2_private.id[0],module.ec2_private.id[1]]
 instances = [for ec2private in module.ec2_private: ec2private.id ]  
 tags = local.common_tags
}

Step-02: c10-03-ELB-classic-loadbalancer-outputs.tf

# Terraform AWS Classic Load Balancer (ELB-CLB) Outputs
output "elb_id" {
 description = "The name of the ELB"
 value       = module.elb.elb_id
}

output "elb_name" {
 description = "The name of the ELB"
 value       = module.elb.elb_name
}

output "elb_dns_name" {
 description = "The DNS name of the ELB"
 value       = module.elb.elb_dns_name
}

output "elb_instances" {
 description = "The list of instances in the ELB (if may be outdated, because instances are attached using elb_attachment resource)"
 value       = module.elb.elb_instances
}

output "elb_source_security_group_id" {
 description = "The ID of the security group that you can use as part of your inbound rules for your load balancer's back-end application instances"
 value       = module.elb.elb_source_security_group_id
}

output "elb_zone_id" {
 description = "The canonical hosted zone ID of the ELB (to be used in a Route 53 Alias record)"
 value       = module.elb.elb_zone_id
}