Awesome
<img src="ttlogo.png" width="300" alt="Terratag Logo">
<sub>Terratag is brought to you with ❤️ by <img src="logo.svg" width="150"> Let your team manage their own environment in AWS, Azure and Google. <br/> Governed by your policies and with complete visibility and cost management.
What?
Terratag is a CLI tool allowing for tags or labels to be applied across an entire set of OpenTofu/Terraform files. Terratag will apply tags or labels to any AWS, GCP and Azure resources.
Terratag in action
Why?
Maintaining tags across your application is hard, especially when done manually. Terratag enables you to easily add tags to your existing IaC and benefit from some cross-resource tag applications you wish you had thought of when you had just started writing your OpenTofu/Terraform, saving you tons of time and making future updates easy. Read more on why tagging is important.
How?
Prerequisites
- OpenTofu 1.x or Terraform 0.12 through 1.x.
Usage
-
Install from homebrew:
brew install env0/terratag/terratag
Or download the latest release binary .
-
Initialize Opentofu/Terraform modules to get provider schema and pull child modules:
tofu init
terraform init
-
Run Terratag
terratag -dir=foo/bar -tags={\"environment_id\": \"prod\"}
or
terratag -dir=foo/bar -tags="environment_id=prod,some-tag=value"
Example Output
Before Terratag
|- aws.tf
|- gcp.tf
# aws.tf
provider "aws" {
version = "~> 2.0"
region = "us-east-1"
}
resource "aws_s3_bucket" "b" {
bucket = "my-tf-test-bucket"
acl = "private"
tags {
Name = "My bucket"
}
}
#gcp.tf
resource "google_storage_bucket" "static-site" {
name = "image-store.com"
location = "EU"
force_destroy = true
bucket_policy_only = true
website {
main_page_suffix = "index.html"
not_found_page = "404.html"
}
cors {
origin = ["http://image-store.com"]
method = ["GET", "HEAD", "PUT", "POST", "DELETE"]
response_header = ["*"]
max_age_seconds = 3600
}
labels = {
"foo" = "bar"
}
}
After Terratag
Running terratag -tags={\"env0_environment_id\":\"dev\",\"env0_project_id\":\"clientA\"}
will output:
|- aws.terratag.tf
|- gcp.terratag.tf
|- aws.tf.bak
|- gcp.tf.bak
# aws.terratag.tf
provider "aws" {
version = "~> 2.0"
region = "us-east-1"
}
resource "aws_s3_bucket" "b" {
bucket = "my-tf-test-bucket"
acl = "private"
tags = merge( map("Name", "My bucket" ), local.terratag_added_main)
}
locals {
terratag_added_main = {"env0_environment_id"="dev","env0_project_id"="clientA"}
}
# gcp.terratag.tf
resource "google_storage_bucket" "static-site" {
name = "image-store.com"
location = "EU"
force_destroy = true
bucket_policy_only = true
website {
main_page_suffix = "index.html"
not_found_page = "404.html"
}
cors {
origin = ["http://image-store.com"]
method = ["GET", "HEAD", "PUT", "POST", "DELETE"]
response_header = ["*"]
max_age_seconds = 3600
}
labels = merge( map("foo" , "bar"), local.terratag_added_main)
}
locals {
terratag_added_main = {"env0_environment_id"="dev","env0_project_id"="clientA"}
}
Optional CLI flags
-dir=<path>
- defaults to.
. Sets the opentofu/terraform folder to tag.tf
files in-skipTerratagFiles=false
- Dont skip processing*.terratag.tf
files (when running terratag a second time for the same directory)-rename=false
- Instead of replacing files named<basename>.tf
with<basename>.terratag.tf
, keep the original filename-filter=<regular expression>
- defaults to.*
. Only apply tags to the resource types matched by the regular expression-type=<terraform or terragrunt>
- defaults toterraform
(andopentofu
). Ifterragrunt
is used, tags the files under.terragrunt-cache
folder. Note: if Terragrunt does not create a.terragrunt-cache
folder, use the default or omit.-verbose
- Turn on verbose logging-default-to-terraform
By default uses OpenTofu (if installed), if set will use Terraform even when Opentofu is installed
Setting options via enviroment variables is also supported. CLI flags have a precedence over envrionment variables.
TERRATAG_TAGS
TERRATAG_DIR
TERRATAG_SKIPTERRATAGFILES
TERRATAG_FILTER
TERRATAG_SKIP
TERRATAG_VERBOSE
TERRATAG_RENAME
TERRATAG_TYPE
TERRATAG_DEFAULT_TO_TERRAFORM
See more samples here
Notes
- Resources already having the exact same tag as the one being appended will be overridden
Develop
Issues and Pull Requests are very welcome!
Prerequisites
- Go > 1.21
Build
git clone https://github.com/env0/terratag
cd terratag
go mod tidy
go build ./cmd/terratag
Test
Structure
The test cases are located under test/tests
Each test case placed there should have the following directory structure:
my_test
|+ input
... // any depth under /input
|- main.tf // this is where we will run all terraform/terratag commands
|- expected
input
is where you should place the terraform files of your test. All commands will be executed wherever down the hierarchy wheremain.tf
is located. We do that to allow cases where complex nested submodule resolution may take place, and one would like to test how a directory higher up the hierarchy gets resolved.expected
is a directory in which all.terratag.tf
files will be matched with the output directory
Each terraform version has it's own config file containing the list of test suites to run.
The config file is under test/fixtures/terraform_xx/config.yaml
where xx
is the terraform version.
What's being tested?
Each test will run:
terraform init
terratag
terraform validate
And finally, will compare the results in out
with the expected
directory
Running Tests
Tests can only run on a specific Terraform version -
go test -run TestTerraformXX
We use tfenv to switch between versions. The exact versions used in the CI tests can be found under test/tfenvconf
.
Release
- Create and push a tag locally, in semver format -
git tag v0.1.32 && git push origin --tags
- Goto Github Releases and edit the draft created by Release Drafter Bot - it should contain the change log for the release (if not press on Auto-generate release notes). Make sure it's pointing at the tag you created in the previous step and publish the release.
- Binaries will be automatically generated by the Github action defined in
.github/workflows/release.yml
- NPM will automatically pick up on the new version.