Support running multiple modules

[salemgolemugoo]

Would be nice to have a feature to run multiple modules at once https://terragrunt.gruntwork.io/docs/features/execute-terraform-commands-on-multiple-modules-at-once/

[corrieriluca]

What you mean is having the possibility to run a terragrunt run-all ... command?

Currently you can create one TerraformLayer for each of your module, the only downside is that the execution order of plan & apply commands will not respect Terragrunt dependencies between your modules.

Respecting rules such as "Layer A must be planned/applied before Layer B" is in our roadmap.

[salemgolemugoo]

Yes, exactly. I would like to associate a TerraformLayer with the whole environment live/dev for the current structure:

├── live
│   ├── common.hcl
│   ├── dev
│   │   ├── account.hcl
│   │   ├── environment.hcl
│   │   └── us-east-1
│   │       ├── eks
│   │       │   ├── apps
│   │       │   └── cluster
│   │       │       └── terragrunt.hcl
│   │       ├── network
│   │       │   └── terragrunt.hcl
│   │       ├── region.hcl
│   │       └── route53
│   │           └── terragrunt.hcl

terragrunt run-all apply allows me to do that.
I see couple of solutions here:

1. Allow user to customise arguments to the running binary terraform/terragrunt/opentofu
2. Create a simple utility which is generating TerraformLayer respecting the order of the dependencies and your unreleased feature
3. Add support for run-all