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.

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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

}

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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"

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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

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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.