> ## Documentation Index
> Fetch the complete documentation index at: https://gcore-doc-1046.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Copy CDN resources via Terraform

Terraform simplifies the duplication of CDN configurations across environments, ensuring consistency and reliability. By managing environment-specific variables and using workspaces, you can maintain identical setups across your staging and production environments.

<Tip>
  **Tip**

  To proceed with the following steps, you need to have [API keys](/account-settings/api-tokens#create-a-permanent-api-token) configured.
</Tip>

## Step 1: Define variables

One of the key benefits of Terraform is its ability to manage configurations through variables, making it easier to handle environment-specific settings.

Create a *variables.tf* file to define parameters that change between environments, such as API URL, token, or CDN resource names.

```
// variables.tf
variable "api_token" {
  description = "API token for access to your Gcore account"
  type        = string
  sensitive   = true
}
variable "api_endpoint" {
  description = "Gcore API url"
  type        = string
}
variable "cdn_resource_cname" {
  description = "Name of the CDN resource"
  type        = string
}
```

## Step 2: Configure environment variables

Create *.tfvars* file for each environment to set the variable values. For example, for preproduction:

```
// preprod.tfvars
api_token          = "your-preprod-api-token"
api_endpoint       = "https://api.preprod.world"
cdn_resource_cname = "preprod.example.com"
```

And for production:

```
// production.tfvars
api_token          = "your-production-api-token"
api_endpoint       = "https://api.gcore.com"
cdn_resource_cname = "prod.example.com"
```

## Step 3: Write configurarion for copying resources

Add the following Terraform configuration to the *main.tf* :

```
// main.tf
terraform {
  required_providers {
    gcore = {
      source  = "G-Core/gcore"
      version = ">= 0.8.20"
    }
  }
}
provider "gcore" {
  permanent_api_token = var.api_token
  api_endpoint = var.api_endpoint
}
resource "gcore_cdn_resource" "example" {
  cname  = var.cdn_resource_cname
  origin = "example.com"
}
```

## Step 4: Use Terraform workspaces

Terraform workspaces allow you to manage multiple environments using the same configuration.

Initialize Terraform: `terraform init`

Then create workspaces for preproduction and production:

```
terraform workspace new preprod
terraform workspace new production
```

## Step 5: Apply the configuration

Switch to the staging workspace and apply the configuration:

```
terraform workspace select staging
terraform apply -var-file=preprod.tfvars
```

Then switch to the production workspace and apply the configuration there as well:

```
terraform workspace select production
terraform apply -var-file=production.tfvars
```

By using Terraform workspaces and variable files, you can apply the same configuration to different environments with a few commands.