Hierarchical firewall policies for folders
This commit is contained in:
Julio Castillo
parent
2ea59d2ee4
commit
779f585d1d
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@ -41,6 +41,48 @@ module "folder" {
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# tftest:modules=1:resources=4
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```
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### Hierarchical firewall policies
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```hcl
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module "folder1" {
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source = "./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-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 = {
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tcp = ["22"]
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}
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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_attachments = {
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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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module "folder2" {
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source = "./modules/folder"
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parent = var.organization_id
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name = "hf2"
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firewall_policy_attachments = {
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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=6
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```
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<!-- BEGIN TFDOC -->
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## Variables
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@ -48,6 +90,8 @@ module "folder" {
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|---|---|:---: |:---:|:---:|
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| name | Folder name. | <code title="">string</code> | ✓ | |
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| parent | Parent in folders/folder_id or organizations/org_id format. | <code title="string validation { condition = can(regex("(organizations|folders)/[0-9]+", var.parent)) error_message = "Parent must be of the form folders/folder_id or organizations/organization_id." }">string</code> | ✓ | |
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| *firewall_policies* | Hierarchical firewall policies to *create* in this folder. | <code title="map(map(object({ description = string direction = string action = string priority = number ranges = list(string) ports = map(list(string)) target_service_accounts = list(string) target_resources = list(string) logging = bool })))">map(map(object({...})))</code> | | <code title="">{}</code> |
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| *firewall_policy_attachments* | List of hierarchical firewall policy IDs to *attach* to this folder. | <code title="set(string)">set(string)</code> | | <code title="">[]</code> |
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| *iam* | IAM bindings in {ROLE => [MEMBERS]} format. | <code title="map(set(string))">map(set(string))</code> | | <code title="">{}</code> |
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| *policy_boolean* | Map of boolean org policies and enforcement value, set value to null for policy restore. | <code title="map(bool)">map(bool)</code> | | <code title="">{}</code> |
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| *policy_list* | Map of list org policies, status is true for allow, false for deny, null for restore. Values can only be used for allow or deny. | <code title="map(object({ inherit_from_parent = bool suggested_value = string status = bool values = list(string) }))">map(object({...}))</code> | | <code title="">{}</code> |
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@ -56,6 +100,8 @@ module "folder" {
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| name | description | sensitive |
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|---|---|:---:|
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| firewall_policies | Map of firewall policy resources created in this folder. | |
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| firewall_policy_id | Map of firewall policy ids created in this folder. | |
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| folder | Folder resource. | |
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| id | Folder id. | |
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| name | Folder name. | |
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@ -14,6 +14,18 @@
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* limitations under the License.
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*/
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locals {
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extended_rules = flatten([
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for policy, rules in var.firewall_policies : [
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for rule_name, rule in rules :
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merge(rule, { policy = policy, name = rule_name })
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]
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])
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rules_map = {
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for rule in local.extended_rules :
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"${rule.policy}-${rule.name}" => rule
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}
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}
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resource "google_folder" "folder" {
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display_name = var.name
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@ -99,3 +111,48 @@ resource "google_folder_organization_policy" "list" {
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}
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}
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}
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resource "google_compute_organization_security_policy" "policy" {
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provider = google-beta
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for_each = var.firewall_policies
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display_name = each.key
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parent = google_folder.folder.id
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}
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resource "google_compute_organization_security_policy_rule" "rule" {
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provider = google-beta
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for_each = local.rules_map
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policy_id = google_compute_organization_security_policy.policy[each.value.policy].id
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action = each.value.action
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direction = each.value.direction
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priority = each.value.priority
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target_resources = each.value.target_resources
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target_service_accounts = each.value.target_service_accounts
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enable_logging = each.value.logging
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# preview = each.value.preview
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match {
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description = each.value.description
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config {
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src_ip_ranges = each.value.direction == "INGRESS" ? each.value.ranges : null
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dest_ip_ranges = each.value.direction == "EGRESS" ? each.value.ranges : null
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dynamic "layer4_config" {
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for_each = each.value.ports
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iterator = port
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content {
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ip_protocol = port.key
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ports = port.value
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}
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}
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}
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}
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}
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resource "google_compute_organization_security_policy_association" "attachment" {
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provider = google-beta
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for_each = var.firewall_policy_attachments
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name = "${google_folder.folder.id}-${each.key}"
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attachment_id = google_folder.folder.id
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policy_id = each.value
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}
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@ -33,3 +33,19 @@ output "name" {
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description = "Folder name."
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value = google_folder.folder.display_name
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}
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output "firewall_policies" {
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description = "Map of firewall policy resources created in this folder."
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value = {
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for name, _ in var.firewall_policies :
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name => google_compute_organization_security_policy.policy[name]
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}
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}
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output "firewall_policy_id" {
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description = "Map of firewall policy ids created in this folder."
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value = {
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for name, _ in var.firewall_policies :
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name => google_compute_organization_security_policy.policy[name].id
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}
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}
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@ -50,3 +50,27 @@ variable "policy_list" {
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}))
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default = {}
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}
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variable "firewall_policies" {
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description = "Hierarchical firewall policies to *create* in this folder."
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type = map(map(object({
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description = string
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direction = string
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action = string
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priority = number
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ranges = list(string)
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ports = map(list(string))
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target_service_accounts = list(string)
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target_resources = list(string)
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logging = bool
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#preview = bool
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})))
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default = {}
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}
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variable "firewall_policy_attachments" {
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description = "List of hierarchical firewall policy IDs to *attach* to this folder."
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# set to avoid manual casting with toset()
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type = map(string)
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default = {}
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}
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@ -15,7 +15,7 @@
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# common variables used for examples
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variable "organization_id" {
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default = "organization/organization"
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default = "organizations/1122334455"
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}
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variable "project_id" {
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