tests/int: Update terraform config to use tags

Update the terraform configurations for all the cloud providers to use
tags. The tags are provided with input variables "tags" which is common
across the cloud providers.

Signed-off-by: Sunny <[email protected]>

Author: darkowlzz

tests/integration/.env.sample

@@ -2,13 +2,40 @@
 # export AWS_ACCESS_KEY_ID=
 # export AWS_SECRET_ACCESS_KEY=
 # export AWS_REGION=us-east-2
+## This random value is needed for AWS only to prevent
+## https://github.com/hashicorp/terraform-provider-aws/issues/19583 which
+## happens when using dynamic "name" value in presence of more than one tag.
+# export TF_VAR_rand=${RANDOM}
 
 ## Azure
 # export TF_VAR_azure_location=eastus
+## Set the following only when authenticating using Service Principal (suited
+## for CI environment).
+# export ARM_CLIENT_ID=
+# export ARM_CLIENT_SECRET=
+# export ARM_SUBSCRIPTION_ID=
+# export ARM_TENANT_ID=
 
 ## GCP
 # export TF_VAR_gcp_project_id=
 # export TF_VAR_gcp_region=us-central1
 # export TF_VAR_gcp_zone=us-central1-c
 ## Leave GCR region empty to use gcr.io. Else set it to `us`, `eu` or `asia`.
 # export TF_VAR_gcr_region=
+## Set the following only when using service account.
+## Provide absolute path to the service account JSON key file.
+# export GOOGLE_APPLICATION_CREDENTIALS=
+
+## Common variables
+# export TF_VAR_tags='{"environment"="dev"}'
+#
+## WARNING: For AWS, also set the "createdat" tag to overwrite the default
+## timestamp and use a static value. Dynamic tag value causes the issue
+## https://github.com/hashicorp/terraform-provider-aws/issues/19583.
+## The date format is based on the format defined in
+## fluxcd/test-infra/tf-modules/utils/tags tf-module that's compatible with the
+## tags/labels value in all the cloud providers.
+## Also, since "createdat" is a dynamic value, its value changes on subsequent
+## apply. Overriding it with a static value helps avoid modifying the resource
+## tags during development when the configurations are applied frequently.
+# export TF_VAR_tags='{"environment"="dev", "createdat"='"\"$(date -u +x%Y-%m-%d_%Hh%Mm%Ss)\""'}'

tests/integration/terraform/aws/main.tf

@@ -3,23 +3,26 @@ provider "aws" {}
 resource "random_pet" "suffix" {}
 
 locals {
-  name = "flux-test-${random_pet.suffix.id}"
+  name = "flux-test-${var.rand}"
 }
 
 module "eks" {
   source = "git::https://github.com/fluxcd/test-infra.git//tf-modules/aws/eks"
 
   name = local.name
+  tags = var.tags
 }
 
 module "test_ecr" {
   source = "git::https://github.com/fluxcd/test-infra.git//tf-modules/aws/ecr"
 
   name = "test-repo-${local.name}"
+  tags = var.tags
 }
 
 module "image_reflector_ecr" {
   source = "git::https://github.com/fluxcd/test-infra.git//tf-modules/aws/ecr"
 
   name = "test-image-reflector-${local.name}"
+  tags = var.tags
 }

tests/integration/terraform/aws/variables.tf

@@ -0,0 +1,8 @@
+variable "rand" {
+  type = string
+}
+
+variable "tags" {
+  type    = map(string)
+  default = {}
+}

tests/integration/terraform/azure/main.tf

@@ -17,6 +17,7 @@ module "aks" {
 
   name     = local.name
   location = var.azure_location
+  tags     = var.tags
 }
 
 module "acr" {
@@ -26,6 +27,7 @@ module "acr" {
   location         = var.azure_location
   aks_principal_id = module.aks.principal_id
   resource_group   = module.aks.resource_group
+  tags             = var.tags
 
   depends_on = [module.aks]
 }

tests/integration/terraform/azure/variables.tf

@@ -2,3 +2,8 @@ variable "azure_location" {
   type    = string
   default = "eastus"
 }
+
+variable "tags" {
+  type    = map(string)
+  default = {}
+}

tests/integration/terraform/gcp/main.tf

@@ -14,10 +14,12 @@ module "gke" {
   source = "git::https://github.com/fluxcd/test-infra.git//tf-modules/gcp/gke"
 
   name = local.name
+  tags = var.tags
 }
 
 module "gcr" {
   source = "git::https://github.com/fluxcd/test-infra.git//tf-modules/gcp/gcr"
 
   name = local.name
+  tags = var.tags
 }

tests/integration/terraform/gcp/variables.tf

@@ -16,3 +16,8 @@ variable "gcr_region" {
   type    = string
   default = "" // Empty default to use gcr.io.
 }
+
+variable "tags" {
+  type    = map(string)
+  default = {}
+}