#terragrunt - May 2019

Is it me or do the terragrunt docs seem lacking? I've been having to dig through git issues to find out more. Any external doc references are appreciated

we (cloudposse) don't use terragrunt

I really think the tool is great for what it's trying to do, it's just a bit frustrating

what do you guys use?

terraform natively supports intialization of projects using the -from-module parameter

you can pass that as an environment variable too

so we define all of our root module invocations here: https://github.com/cloudposse/terraform-root-modules

we wrote an "env mapper" to make setting envs for terraform easier (but it's not required)

here's how we put it together:

the .envrc indicates the module we want to use

then we just call terraform init and it automatically imports the remote module

no wrappers required

damn that's nice

I was worried about what happens when terraform is updated when using terragrunt

I'm gonna need to dig through all of this

yea, that's what i like about this.

what about all the state stuff that terragrunt does for you, how are you guys handling that?

terragrunt is basically a task runner

there are a lot of task runners out there.

we use make predominantly with terraform

terragrunt helps keep your code DRY, but if you decompose thee different things that terragrunt does, you can easily accomplish it other ways

we use direnv to keep project level settings

we use make for a task runner

we use tfenv to make mapping envs easier (totally optional)

we use terraform init -from-module=... (using the TF_CLI_ARGS_init=-from-module=... env), to keep things DRY.

the combination of these things create a generalizable pattern that works formore than terraform

for example, we use helm and helmfile

we package all the tools in geodesic, which is our cloud automation image

we also use variant to define cli tools specific to our organization.

this is all really good stuff to take back to my team

cool! happy to share more or answer any questions.

this is a great start, thank you

Thanks for the feedbacl & Rex. Good call on these