terraeasy

Easy Terraform wrapper

Purpose / main ideas

1. Make terraform DRY

Avoid repeating of terraform code across environments, put all common (across environments) resources in common directory, put differentiating variables and resources to environment specific directories (eg. stage or prod)

2. Use goodness for terraform graphs

Unlike terragrunt, idea here is NOT to split infrastructure to as many states as possible, this allows easier consumption of resource outputs within a single apply / plan

3. Keep it simple and expandable

It's bash, how much easier can it get? :)

4. Got a lot of custom modules in git? Save time!

This is optional to use this, in terraeasy.sh terraeasy.sh will clone / pull given git repository on every run. Idea behind this is that when there is a repository with multiple custom terraform modules, we clone/pull it once (effectively cache) and refer to module source by relative path (prefixed with ../.terraform-modules/)

How does it work

terraeasy.sh has built in help, so just run it without any arguments for help

When you run terraeasy.sh for a given environment (eg. stage) it will:

1. Create working directory (tf-working-dir by default)
2. Create symbolic links for *tf* files (so eg. .tf, .tfvars) from common and stage (in this example) to tf-working-dir
3. Will run terraform init -reconfigure with -chdir tf-working-dir
4. Will run your command (eg. plan or apply) with -chdir tf-working-dir and will include state.tfvars from stage directory