Using Terragrunt’s generate block to make your Terraform DRY

As you write more Terraform modules for your Infrastructure as Code (IaC), you will notice some repetitions across all your modules. An example of this is the providerblock. Terragrunt’s generate block can be used to eliminate this repetition and keep your Terraform DRY.

Example Time

Let’s say you have the following directory structure for your IaC

terragrunt/
- terragrunt.hcl
- vpc/
  - terragrunt.hcl
- security_groups/
  - terragrunt.hcl
modules/
- vpc/
  - main.tf
…