module code for terraform

You can refer the following example for building google cloud resource

git clone https://github.com/terraform-google-modules/terraform-google-network
cd terraform-google-network

 

1. directory structure

├── LICENSE
├── README.md
├── main.tf
├── variables.tf
├── outputs.tf

LICESE : describe the license like apache or gpl

README.md : explain the source code

main.tf : call the module in .terraform directory

variables.tf : define variables using module api

outputs.tf : define output result after making the resource

 

In addition, the .terraform directory includes module directory calling main and plugin directory.

 

2.  main.tf

module "test-vpc-module" {
  source       = "terraform-google-modules/network/google"
  version      = "~> 6.0"
  project_id   = var.project_id # Replace this with your project ID
  network_name = var.network_name
  mtu          = 1460
  subnets = [
    {
      subnet_name   = "subnet-01"
      subnet_ip     = "10.10.10.0/24"
      subnet_region = "us-west1"
    },
    {
      subnet_name           = "subnet-02"
      subnet_ip             = "10.10.20.0/24"
      subnet_region         = "us-west1"
      subnet_private_access = "true"
      subnet_flow_logs      = "true"
    },
    {
      subnet_name               = "subnet-03"
      subnet_ip                 = "10.10.30.0/24"
      subnet_region             = "us-west1"
      subnet_flow_logs          = "true"
      subnet_flow_logs_interval = "INTERVAL_10_MIN"
      subnet_flow_logs_sampling = 0.7
      subnet_flow_logs_metadata = "INCLUDE_ALL_METADATA"
      subnet_flow_logs_filter   = "false"
    }
  ]
}

 

3. variables.tf

variable "project_id" {
  description = "The project ID to host the network in"
  default     = "FILL IN YOUR PROJECT ID HERE"
}

variable "network_name" {
  description = "The name of the VPC network being created"
  default     = "examplevpc"
}

 

4. output.tf

output "network_name" {
  value       = module.test-vpc-module.network_name
  description = "The name of the VPC being created"
}
output "network_self_link" {
  value       = module.test-vpc-module.network_self_link
  description = "The URI of the VPC being created"
}
output "project_id" {
  value       = module.test-vpc-module.project_id
  description = "VPC project id"
}
output "subnets_names" {
  value       = module.test-vpc-module.subnets_names
  description = "The names of the subnets being created"
}
output "subnets_ips" {
  value       = module.test-vpc-module.subnets_ips
  description = "The IP and cidrs of the subnets being created"
}
output "subnets_regions" {
  value       = module.test-vpc-module.subnets_regions
  description = "The region where subnets will be created"
}
output "subnets_private_access" {
  value       = module.test-vpc-module.subnets_private_access
  description = "Whether the subnets will have access to Google API's without a public IP"
}
output "subnets_flow_logs" {
  value       = module.test-vpc-module.subnets_flow_logs
  description = "Whether the subnets will have VPC flow logs enabled"
}
output "subnets_secondary_ranges" {
  value       = module.test-vpc-module.subnets_secondary_ranges
  description = "The secondary ranges associated with these subnets"
}
output "route_names" {
  value       = module.test-vpc-module.route_names
  description = "The routes associated with this VPC"
}

 

5. terraform command when above resource make

# in advance, the module is making into .terraform directory like below command

terraform init

 

#and then, we make the resource regarding modules.

terraform apply