360 lines
16 KiB
Markdown
360 lines
16 KiB
Markdown
# Google Cloud Folder Module
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This module allows the creation and management of folders, including support for IAM bindings, organization policies, and hierarchical firewall rules.
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## Basic example with IAM bindings
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```hcl
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module "folder" {
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source = "./fabric/modules/folder"
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parent = "organizations/1234567890"
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name = "Folder name"
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group_iam = {
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"cloud-owners@example.org" = [
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"roles/owner",
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"roles/resourcemanager.folderAdmin",
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"roles/resourcemanager.projectCreator"
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]
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}
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iam = {
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"roles/owner" = ["user:one@example.org"]
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}
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iam_additive = {
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"roles/compute.admin" = ["user:a1@example.org", "user:a2@example.org"]
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"roles/compute.viewer" = ["user:a2@example.org"]
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}
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iam_additive_members = {
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"user:am1@example.org" = ["roles/storage.admin"]
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"user:am2@example.org" = ["roles/storage.objectViewer"]
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}
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}
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# tftest modules=1 resources=9 inventory=iam.yaml
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```
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## Organization policies
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To manage organization policies, the `orgpolicy.googleapis.com` service should be enabled in the quota project.
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```hcl
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module "folder" {
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source = "./fabric/modules/folder"
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parent = "organizations/1234567890"
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name = "Folder name"
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org_policies = {
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"compute.disableGuestAttributesAccess" = {
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enforce = true
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}
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"constraints/compute.skipDefaultNetworkCreation" = {
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enforce = true
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}
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"iam.disableServiceAccountKeyCreation" = {
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enforce = true
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}
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"iam.disableServiceAccountKeyUpload" = {
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enforce = false
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rules = [
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{
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condition = {
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expression = "resource.matchTagId(\"tagKeys/1234\", \"tagValues/1234\")"
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title = "condition"
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description = "test condition"
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location = "somewhere"
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}
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enforce = true
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}
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]
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}
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"constraints/iam.allowedPolicyMemberDomains" = {
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allow = {
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values = ["C0xxxxxxx", "C0yyyyyyy"]
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}
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}
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"constraints/compute.trustedImageProjects" = {
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allow = {
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values = ["projects/my-project"]
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}
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}
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"constraints/compute.vmExternalIpAccess" = {
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deny = { all = true }
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}
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}
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}
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# tftest modules=1 resources=8 inventory=org-policies.yaml
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```
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### Organization policy factory
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See the [organization policy factory in the project module](../project#organization-policy-factory).
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## Logging Sinks
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```hcl
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module "gcs" {
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source = "./fabric/modules/gcs"
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project_id = "my-project"
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name = "gcs_sink"
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force_destroy = true
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}
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module "dataset" {
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source = "./fabric/modules/bigquery-dataset"
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project_id = "my-project"
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id = "bq_sink"
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}
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module "pubsub" {
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source = "./fabric/modules/pubsub"
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project_id = "my-project"
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name = "pubsub_sink"
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}
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module "bucket" {
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source = "./fabric/modules/logging-bucket"
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parent_type = "project"
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parent = "my-project"
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id = "bucket"
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}
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module "folder-sink" {
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source = "./fabric/modules/folder"
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parent = "folders/657104291943"
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name = "my-folder"
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logging_sinks = {
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warnings = {
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destination = module.gcs.id
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filter = "severity=WARNING"
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type = "storage"
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}
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info = {
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destination = module.dataset.id
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filter = "severity=INFO"
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type = "bigquery"
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}
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notice = {
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destination = module.pubsub.id
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filter = "severity=NOTICE"
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type = "pubsub"
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}
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debug = {
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destination = module.bucket.id
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filter = "severity=DEBUG"
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exclusions = {
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no-compute = "logName:compute"
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}
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type = "logging"
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}
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}
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logging_exclusions = {
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no-gce-instances = "resource.type=gce_instance"
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}
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}
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# tftest modules=5 resources=14 inventory=logging.yaml
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```
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## Hierarchical firewall policies
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Hierarchical firewall policies can be managed in two ways:
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- via the `firewall_policies` variable, to directly define policies and rules in Terraform
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- via the `firewall_policy_factory` variable, to leverage external YaML files via a simple "factory" embedded in the module ([see here](../../blueprints/factories) for more context on factories)
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Once you have policies (either created via the module or externally), you can associate them using the `firewall_policy_association` variable.
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### Directly defined firewall policies
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```hcl
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module "folder1" {
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source = "./fabric/modules/folder"
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parent = var.organization_id
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name = "policy-container"
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firewall_policies = {
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iap-policy = {
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allow-admins = {
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description = "Access from the admin subnet to all subnets"
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direction = "INGRESS"
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action = "allow"
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priority = 1000
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ranges = ["10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16"]
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ports = { all = [] }
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target_service_accounts = null
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target_resources = null
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logging = false
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}
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allow-iap-ssh = {
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description = "Always allow ssh from IAP"
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direction = "INGRESS"
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action = "allow"
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priority = 100
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ranges = ["35.235.240.0/20"]
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ports = { tcp = ["22"] }
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target_service_accounts = null
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target_resources = null
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logging = false
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}
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}
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}
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firewall_policy_association = {
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iap-policy = "iap-policy"
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}
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}
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module "folder2" {
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source = "./fabric/modules/folder"
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parent = var.organization_id
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name = "hf2"
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firewall_policy_association = {
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iap-policy = module.folder1.firewall_policy_id["iap-policy"]
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}
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}
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# tftest modules=2 resources=7 inventory=hfw.yaml
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```
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### Firewall policy factory
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The in-built factory allows you to define a single policy, using one file for rules, and an optional file for CIDR range substitution variables. Remember that non-absolute paths are relative to the root module (the folder where you run `terraform`).
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```hcl
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module "folder1" {
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source = "./fabric/modules/folder"
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parent = var.organization_id
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name = "policy-container"
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firewall_policy_factory = {
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cidr_file = "configs/firewall-policies/cidrs.yaml"
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policy_name = "iap-policy"
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rules_file = "configs/firewall-policies/rules.yaml"
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}
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firewall_policy_association = {
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iap-policy = "iap-policy"
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}
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}
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module "folder2" {
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source = "./fabric/modules/folder"
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parent = var.organization_id
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name = "hf2"
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firewall_policy_association = {
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iap-policy = module.folder1.firewall_policy_id["iap-policy"]
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}
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}
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# tftest modules=2 resources=7 files=cidrs,rules inventory=hfw.yaml
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```
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```yaml
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# tftest-file id=cidrs path=configs/firewall-policies/cidrs.yaml
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rfc1918:
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- 10.0.0.0/8
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- 172.16.0.0/12
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- 192.168.0.0/16
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```
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```yaml
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# tftest-file id=rules path=configs/firewall-policies/rules.yaml
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allow-admins:
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description: Access from the admin subnet to all subnets
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direction: INGRESS
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action: allow
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priority: 1000
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ranges:
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- $rfc1918
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ports:
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all: []
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target_resources: null
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logging: false
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allow-iap-ssh:
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description: "Always allow ssh from IAP"
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direction: INGRESS
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action: allow
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priority: 100
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ranges:
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- 35.235.240.0/20
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ports:
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tcp: ["22"]
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target_resources: null
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logging: false
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```
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## Tags
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Refer to the [Creating and managing tags](https://cloud.google.com/resource-manager/docs/tags/tags-creating-and-managing) documentation for details on usage.
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```hcl
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module "org" {
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source = "./fabric/modules/organization"
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organization_id = var.organization_id
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tags = {
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environment = {
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description = "Environment specification."
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iam = null
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values = {
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dev = null
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prod = null
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}
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}
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}
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}
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module "folder" {
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source = "./fabric/modules/folder"
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name = "Test"
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parent = module.org.organization_id
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tag_bindings = {
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env-prod = module.org.tag_values["environment/prod"].id
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foo = "tagValues/12345678"
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}
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}
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# tftest modules=2 resources=6 inventory=tags.yaml
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```
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<!-- TFDOC OPTS files:1 -->
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<!-- BEGIN TFDOC -->
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## Files
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| name | description | resources |
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| [firewall-policies.tf](./firewall-policies.tf) | None | <code>google_compute_firewall_policy</code> · <code>google_compute_firewall_policy_association</code> · <code>google_compute_firewall_policy_rule</code> |
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| [iam.tf](./iam.tf) | IAM bindings, roles and audit logging resources. | <code>google_folder_iam_binding</code> · <code>google_folder_iam_member</code> |
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| [logging.tf](./logging.tf) | Log sinks and supporting resources. | <code>google_bigquery_dataset_iam_member</code> · <code>google_logging_folder_exclusion</code> · <code>google_logging_folder_sink</code> · <code>google_project_iam_member</code> · <code>google_pubsub_topic_iam_member</code> · <code>google_storage_bucket_iam_member</code> |
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| [main.tf](./main.tf) | Module-level locals and resources. | <code>google_essential_contacts_contact</code> · <code>google_folder</code> |
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| [organization-policies.tf](./organization-policies.tf) | Folder-level organization policies. | <code>google_org_policy_policy</code> |
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| [outputs.tf](./outputs.tf) | Module outputs. | |
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| [tags.tf](./tags.tf) | None | <code>google_tags_tag_binding</code> |
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| [variables.tf](./variables.tf) | Module variables. | |
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| [versions.tf](./versions.tf) | Version pins. | |
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## Variables
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| name | description | type | required | default |
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| [contacts](variables.tf#L17) | List of essential contacts for this resource. Must be in the form EMAIL -> [NOTIFICATION_TYPES]. Valid notification types are ALL, SUSPENSION, SECURITY, TECHNICAL, BILLING, LEGAL, PRODUCT_UPDATES. | <code>map(list(string))</code> | | <code>{}</code> |
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| [firewall_policies](variables.tf#L24) | Hierarchical firewall policies created in this folder. | <code title="map(map(object({ action = string description = string direction = string logging = bool ports = map(list(string)) priority = number ranges = list(string) target_resources = list(string) target_service_accounts = list(string) })))">map(map(object({…})))</code> | | <code>{}</code> |
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| [firewall_policy_association](variables.tf#L41) | The hierarchical firewall policy to associate to this folder. Must be either a key in the `firewall_policies` map or the id of a policy defined somewhere else. | <code>map(string)</code> | | <code>{}</code> |
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| [firewall_policy_factory](variables.tf#L48) | Configuration for the firewall policy factory. | <code title="object({ cidr_file = string policy_name = string rules_file = string })">object({…})</code> | | <code>null</code> |
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| [folder_create](variables.tf#L58) | Create folder. When set to false, uses id to reference an existing folder. | <code>bool</code> | | <code>true</code> |
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| [group_iam](variables.tf#L64) | Authoritative IAM binding for organization groups, in {GROUP_EMAIL => [ROLES]} format. Group emails need to be static. Can be used in combination with the `iam` variable. | <code>map(list(string))</code> | | <code>{}</code> |
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| [iam](variables.tf#L71) | IAM bindings in {ROLE => [MEMBERS]} format. | <code>map(list(string))</code> | | <code>{}</code> |
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| [iam_additive](variables.tf#L78) | Non authoritative IAM bindings, in {ROLE => [MEMBERS]} format. | <code>map(list(string))</code> | | <code>{}</code> |
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| [iam_additive_members](variables.tf#L85) | IAM additive bindings in {MEMBERS => [ROLE]} format. This might break if members are dynamic values. | <code>map(list(string))</code> | | <code>{}</code> |
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| [id](variables.tf#L92) | Folder ID in case you use folder_create=false. | <code>string</code> | | <code>null</code> |
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| [logging_exclusions](variables.tf#L98) | Logging exclusions for this folder in the form {NAME -> FILTER}. | <code>map(string)</code> | | <code>{}</code> |
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| [logging_sinks](variables.tf#L105) | Logging sinks to create for the organization. | <code title="map(object({ bq_partitioned_table = optional(bool) description = optional(string) destination = string disabled = optional(bool, false) exclusions = optional(map(string), {}) filter = string include_children = optional(bool, true) type = string }))">map(object({…}))</code> | | <code>{}</code> |
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| [name](variables.tf#L135) | Folder name. | <code>string</code> | | <code>null</code> |
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| [org_policies](variables.tf#L141) | Organization policies applied to this folder keyed by policy name. | <code title="map(object({ inherit_from_parent = optional(bool) # for list policies only. reset = optional(bool) allow = optional(object({ all = optional(bool) values = optional(list(string)) })) deny = optional(object({ all = optional(bool) values = optional(list(string)) })) enforce = optional(bool, true) # for boolean policies only. rules = optional(list(object({ allow = optional(object({ all = optional(bool) values = optional(list(string)) })) deny = optional(object({ all = optional(bool) values = optional(list(string)) })) enforce = optional(bool, true) # for boolean policies only. condition = object({ description = optional(string) expression = optional(string) location = optional(string) title = optional(string) }) })), []) }))">map(object({…}))</code> | | <code>{}</code> |
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| [org_policies_data_path](variables.tf#L181) | Path containing org policies in YAML format. | <code>string</code> | | <code>null</code> |
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| [parent](variables.tf#L187) | Parent in folders/folder_id or organizations/org_id format. | <code>string</code> | | <code>null</code> |
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| [tag_bindings](variables.tf#L197) | Tag bindings for this folder, in key => tag value id format. | <code>map(string)</code> | | <code>null</code> |
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## Outputs
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| name | description | sensitive |
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|---|---|:---:|
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| [firewall_policies](outputs.tf#L16) | Map of firewall policy resources created in this folder. | |
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| [firewall_policy_id](outputs.tf#L21) | Map of firewall policy ids created in this folder. | |
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| [folder](outputs.tf#L26) | Folder resource. | |
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| [id](outputs.tf#L31) | Folder id. | |
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| [name](outputs.tf#L40) | Folder name. | |
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| [sink_writer_identities](outputs.tf#L45) | Writer identities created for each sink. | |
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<!-- END TFDOC -->
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