Reusable Terraform Modules
Each module should be in its own directory.
Each module directory should contain a README documenting variables, outputs, and showing some sample code.
Variables should be split out into variables.tf and outputs into
outputs.tf. Group other resources together however you think is
reasonable. For a very small, simple state, it might be fine to put
everything in one main.tf. For a larger one, you might want to split
it by resource type.
If a resource supports tags or labels, add a Terraform = true
label/tag on it (this makes it easier for us to see what resources are
managed by terraform when we're in a console).
Create independent tags for each module. Eg,
$ git tag health-check-0.1.0
$ git push origin --tags
So that module can then be used as
github.com/appsembler/tfmodules//health_check?ref=health-check-0.1.0. This
is a little odd, but necessary since these modules all live in the
same github repo but should be independantly versioned.