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sa.tf
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sa.tf
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/**
* Copyright 2022 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
locals {
parent_type = var.parent_folder == "" ? "organization" : "folder"
parent_id = var.parent_folder == "" ? var.org_id : var.parent_folder
granular_sa = {
"bootstrap" = "Foundation Bootstrap SA. Managed by Terraform.",
"org" = "Foundation Organization SA. Managed by Terraform.",
"env" = "Foundation Environment SA. Managed by Terraform.",
"net" = "Foundation Network SA. Managed by Terraform.",
"proj" = "Foundation Projects SA. Managed by Terraform.",
}
common_roles = [
"roles/browser", // Required for gcloud beta terraform vet to be able to read the ancestry of folders
]
granular_sa_org_level_roles = {
"bootstrap" = distinct(concat([
"roles/resourcemanager.organizationAdmin",
"roles/accesscontextmanager.policyAdmin",
"roles/serviceusage.serviceUsageConsumer",
], local.common_roles)),
"org" = distinct(concat([
"roles/orgpolicy.policyAdmin",
"roles/logging.configWriter",
"roles/resourcemanager.organizationAdmin",
"roles/securitycenter.notificationConfigEditor",
"roles/resourcemanager.organizationViewer",
"roles/accesscontextmanager.policyAdmin",
"roles/essentialcontacts.admin",
"roles/resourcemanager.tagAdmin",
"roles/resourcemanager.tagUser",
"roles/cloudasset.owner",
"roles/securitycenter.sourcesEditor",
], local.common_roles)),
"env" = distinct(concat([
"roles/resourcemanager.tagUser",
"roles/assuredworkloads.admin",
], local.common_roles)),
"net" = distinct(concat([
"roles/accesscontextmanager.policyAdmin",
"roles/compute.xpnAdmin",
], local.common_roles)),
"proj" = distinct(concat([
"roles/accesscontextmanager.policyAdmin",
"roles/resourcemanager.organizationAdmin",
"roles/serviceusage.serviceUsageConsumer",
], local.common_roles)),
}
granular_sa_parent_level_roles = {
"bootstrap" = [
"roles/resourcemanager.folderAdmin",
],
"org" = [
"roles/resourcemanager.folderAdmin",
],
"env" = [
"roles/resourcemanager.folderAdmin"
],
"net" = [
"roles/resourcemanager.folderViewer",
"roles/compute.networkAdmin",
"roles/compute.securityAdmin",
"roles/compute.orgSecurityPolicyAdmin",
"roles/compute.orgSecurityResourceAdmin",
"roles/dns.admin",
],
"proj" = [
"roles/resourcemanager.folderAdmin",
"roles/artifactregistry.admin",
"roles/compute.networkAdmin",
"roles/compute.xpnAdmin",
],
}
// Roles required to manage resources in the Seed project
granular_sa_seed_project = {
"bootstrap" = [
"roles/storage.admin",
"roles/iam.serviceAccountAdmin",
"roles/resourcemanager.projectDeleter",
"roles/cloudkms.admin",
],
"org" = [
"roles/storage.objectAdmin",
],
"env" = [
"roles/storage.objectAdmin"
],
"net" = [
"roles/storage.objectAdmin",
],
"proj" = [
"roles/storage.objectAdmin",
],
}
// Roles required to manage resources in the CI/CD project
granular_sa_cicd_project = {
"bootstrap" = [
"roles/storage.admin",
"roles/compute.networkAdmin",
"roles/cloudbuild.builds.editor",
"roles/cloudbuild.workerPoolOwner",
"roles/artifactregistry.admin",
"roles/source.admin",
"roles/iam.serviceAccountAdmin",
"roles/workflows.admin",
"roles/cloudscheduler.admin",
"roles/resourcemanager.projectDeleter",
"roles/dns.admin",
"roles/iam.workloadIdentityPoolAdmin",
],
}
bootstrap_projects = {
"seed" = module.seed_bootstrap.seed_project_id,
"cicd" = local.cicd_project_id,
}
}
resource "google_service_account" "terraform-env-sa" {
for_each = local.granular_sa
project = module.seed_bootstrap.seed_project_id
account_id = "sa-terraform-${each.key}"
display_name = each.value
}
module "org_iam_member" {
source = "./modules/parent-iam-member"
for_each = local.granular_sa_org_level_roles
member = "serviceAccount:${google_service_account.terraform-env-sa[each.key].email}"
parent_type = "organization"
parent_id = var.org_id
roles = each.value
}
module "parent_iam_member" {
source = "./modules/parent-iam-member"
for_each = local.granular_sa_parent_level_roles
member = "serviceAccount:${google_service_account.terraform-env-sa[each.key].email}"
parent_type = local.parent_type
parent_id = local.parent_id
roles = each.value
}
module "seed_project_iam_member" {
source = "./modules/parent-iam-member"
for_each = local.granular_sa_seed_project
member = "serviceAccount:${google_service_account.terraform-env-sa[each.key].email}"
parent_type = "project"
parent_id = module.seed_bootstrap.seed_project_id
roles = each.value
}
module "cicd_project_iam_member" {
source = "./modules/parent-iam-member"
for_each = local.granular_sa_cicd_project
member = "serviceAccount:${google_service_account.terraform-env-sa[each.key].email}"
parent_type = "project"
parent_id = local.cicd_project_id
roles = each.value
}
// When the bootstrap projects are created, the Compute Engine
// default service account is disabled but it still has the Editor
// role associated with the service account. This default SA is the
// only member with the editor role.
// This module will remove all editors from both projects.
module "bootstrap_projects_remove_editor" {
source = "./modules/parent-iam-remove-role"
for_each = local.bootstrap_projects
parent_type = "project"
parent_id = each.value
roles = ["roles/editor"]
depends_on = [
module.seed_project_iam_member,
module.cicd_project_iam_member
]
}
resource "google_billing_account_iam_member" "tf_billing_user" {
for_each = local.granular_sa
billing_account_id = var.billing_account
role = "roles/billing.user"
member = "serviceAccount:${google_service_account.terraform-env-sa[each.key].email}"
depends_on = [
google_service_account.terraform-env-sa
]
}
resource "google_billing_account_iam_member" "billing_admin_user" {
for_each = local.granular_sa
billing_account_id = var.billing_account
role = "roles/billing.admin"
member = "serviceAccount:${google_service_account.terraform-env-sa[each.key].email}"
depends_on = [
google_billing_account_iam_member.tf_billing_user
]
}
resource "google_billing_account_iam_member" "billing_account_sink" {
billing_account_id = var.billing_account
role = "roles/logging.configWriter"
member = "serviceAccount:${google_service_account.terraform-env-sa["org"].email}"
}