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

To proceed with the following steps, you need to have API keys configured.

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.