Question 177659 in Azure Question posted in
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Azure – Terraform – is it a good idea to create a backend file automatically?

Could you advise me what is the best way to creation a new terraform project from scratch?

My idea was to create a project structure as below. I am not sure how to handle a terraform state file. I know that I should create e.g. storage account in Azure and then define a backend for each environment. But how to do that? Should I create it manually or create a completely separate module that will handle the creation of a storage account? Or is there any option to create it from the main project, then automatically create a backend.tf file?

├── environment
│   ├── dev
│   │   ├── main.tf
│   │   ├── variables.tf
│   │   └── outputs.tf
│   │   └── backend.tf
│   ├── test
│   │   ├── main.tf
│   │   ├── variables.tf
│   │   └── outputs.tf
│   │   └── backend.tf
│   └── prod
│       ├── main.tf
│       ├── variables.tf
│       └── outputs.tf
│   │   └── backend.tf
├── modules
│   └── aks
│       ├── main.tf
│       ├── variables.tf
│       └── outputs.tf
│   └── terraform_state_storage
│       ├── main.tf
│       ├── variables.tf
│       └── outputs.tf
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2

Answers


  1. 0

    Following your request, you should consider Workspaces.

    Awesome guide here by Yevgeniy Brikman

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  2. 0

    First, please use Terraform Workspaces to manage the deployment of duplicate infrastructure in different dev/test/prod environments.

    As for the creation of backend storage, you either need to split that out into a separate Terraform template, or simply create that outside of Terraform. The problems with creating the backend storage in Terraform are:

    • The backend has to exist before you run terraform init to initialize your Terraform project.
    • If you created the backend storage in another Terraform project, then THAT Terraform project will also need backend storage, and where will that be created?

    Given the above, I always create a backend AWS S3 Bucket, or Azure Blob Storage, manually. This is usually the only infrastructure I create in the AWS or Azure account outside of Terraform.

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