https://github.com/benoit74/terraform-split-state

A lean Python tool to split Terraform state file
https://github.com/benoit74/terraform-split-state

Last synced: 9 days ago
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A lean Python tool to split Terraform state file

• Host: GitHub
• URL: https://github.com/benoit74/terraform-split-state
• Owner: benoit74
• License: mit
• Created: 2023-06-06T13:50:49.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2023-06-06T14:01:48.000Z (over 1 year ago)
• Last Synced: 2024-11-25T17:48:29.621Z (about 2 months ago)
• Language: Python
• Size: 3.91 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
Terraform split state

====

## Purpose

This tool is meant to split a Terraform state from one file to many. See demo for sample configuration.$

This tool probably does not work if workspaces are used.

This tool assumes that you might have direct access to Terraform state file from a local environment + that you have write access to `/tmp` folder on this local environment.

## Demo

Create an S3 bucket (empty preferably) to store your Terraform states and store its name in `shared_s3.tfbackend`

Setup AWS credentials to access this bucket (here we use an AWS_PROFILE, but it could be anything else - or even nothing if your environment is already ready)

```

export AWS_PROFILE=xxxx

```

```

cd tool

python -m venv venv

source venv/bin/activate

pip install --upgrade pip

pip install --upgrade -r requirements.txt

cd ..

```

Provision original infrastructure + init new workspaces

```

cd demo/orig_project

terraform init --backend-config=../shared_s3.tfbackend

terraform apply --auto-approve

cd ../1_new_project

terraform init --backend-config=../shared_s3.tfbackend

cd ../2_new_project

terraform init --backend-config=../shared_s3.tfbackend

cd ../orig_project_after

terraform init --backend-config=../shared_s3.tfbackend

cd ../..

```

Apply demo moves (as configured in config.yaml)

```

cd demo

python ../tool/main.py

cd ..

```

Check that everything has been moved with following actions which should all display nothing to do ("no changes"):

```

cd demo/orig_project_after

terraform plan

cd ../1_new_project

terraform plan

cd ../2_new_project

terraform plan

cd ../..

```