TofuGu: Inventory manager for OpenTofu or Terraform

[alt-dima]

Hello!
I'm developing an inventory manager for OpenTofu or Terraform. It dynamically generates tfvars files based on JSONs in an inventory repository and executes either Tofu or Terraform.
This tool helps avoid Terraform code duplication by allowing reuse with dynamic configuration. For example, you can create multiple identical environments with varying configurations (like CIDR blocks).
The alpha version (proof-of-concept) is ready! If you're interested in trying it out, let me know. This is a personal project I'm working on to learn Golang.
https://github.com/alt-dima/tofugu

[flightlesstux]

Hello @alt-dima,

You should definitely check the terragrunt on https://github.com/gruntwork-io/terragrunt !

[alt-dima]

Thanks! Checked terragrunt.
Not sure, but for me looks like same general idea, but for different cases.
For example: https://terragrunt.gruntwork.io/docs/features/keep-your-terraform-code-dry/#keep-your-terraform-code-dry

In a separate repo, called, for example, live, you define the code for all of your environments, which now consists of just one terragrunt.hcl file per component (e.g. app/terragrunt.hcl, mysql/terragrunt.hcl, etc).

And you need to configure/copy terragrunt.hcl (and maybe other files) to each folder/environment (prod,qa, stage) with subfolders like app,mysql,vpc
But if I have 20 environments (stage1-stage20) and 50 units (app,mysql,vpc,eks,redis,....) then, if I need to add stage21 I will need to copy all of the files again.

I think, better when TF code and inventory split by the repos and adding new environment does not require any changes in the TF repo, only add stage21.json in the inventory repo and deploy every unit
like

./tofugu cook -o demo-org -d account:test-account -d datacenter:staging21 -t vpc -- init
./tofugu cook -o demo-org -d account:test-account -d datacenter:staging21 -t vpc -- apply -auto-approve

./tofugu cook -o demo-org -d account:test-account -d datacenter:staging21 -t eks -- init
./tofugu cook -o demo-org -d account:test-account -d datacenter:staging21 -t eks -- apply -auto-approve

P.S. I very respect terragrunt it is prod-grade tool! My "tool" is just go-learning :)