feat!: Add support for additional pod secondary ranges at the cluster…

… level (terraform-google-modules#1738) Co-authored-by: Maksym Kursin <[email protected]> Co-authored-by: Bharath KKB <[email protected]>
WALTER-GROUP · Sep 23, 2023 · 78865b4 · 78865b4
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diff --git a/README.md b/README.md
@@ -135,6 +135,7 @@ Then perform the following commands on the root folder:
 | add\_cluster\_firewall\_rules | Create additional firewall rules | `bool` | `false` | no |
 | add\_master\_webhook\_firewall\_rules | Create master\_webhook firewall rules for ports defined in `firewall_inbound_ports` | `bool` | `false` | no |
 | add\_shadow\_firewall\_rules | Create GKE shadow firewall (the same as default firewall rules with firewall logs enabled). | `bool` | `false` | no |
+| additional\_ip\_range\_pods | List of _names_ of the additional secondary subnet ip ranges to use for pods | `list(string)` | `[]` | no |
 | authenticator\_security\_group | The name of the RBAC security group for use with Google security groups in Kubernetes RBAC. Group name must be in format [email protected] | `string` | `null` | no |
 | cluster\_autoscaling | Cluster autoscaling configuration. See [more details](https://cloud.google.com/kubernetes-engine/docs/reference/rest/v1beta1/projects.locations.clusters#clusterautoscaling) | <pre>object({<br>    enabled       = bool<br>    min_cpu_cores = number<br>    max_cpu_cores = number<br>    min_memory_gb = number<br>    max_memory_gb = number<br>    gpu_resources = list(object({ resource_type = string, minimum = number, maximum = number }))<br>    auto_repair   = bool<br>    auto_upgrade  = bool<br>    disk_size     = optional(number)<br>    disk_type     = optional(string)<br>  })</pre> | <pre>{<br>  "auto_repair": true,<br>  "auto_upgrade": true,<br>  "disk_size": 100,<br>  "disk_type": "pd-standard",<br>  "enabled": false,<br>  "gpu_resources": [],<br>  "max_cpu_cores": 0,<br>  "max_memory_gb": 0,<br>  "min_cpu_cores": 0,<br>  "min_memory_gb": 0<br>}</pre> | no |
 | cluster\_dns\_domain | The suffix used for all cluster service records. | `string` | `""` | no |

diff --git a/autogen/main/cluster.tf.tmpl b/autogen/main/cluster.tf.tmpl
@@ -337,6 +337,12 @@ resource "google_container_cluster" "primary" {
   ip_allocation_policy {
     cluster_secondary_range_name  = var.ip_range_pods
     services_secondary_range_name = var.ip_range_services
+    dynamic "additional_pod_ranges_config" {
+      for_each = length(var.additional_ip_range_pods) != 0 ? [1] : []
+      content {
+        pod_range_names = var.additional_ip_range_pods
+      }
+    }
   }
 
   maintenance_policy {

diff --git a/autogen/main/main.tf.tmpl b/autogen/main/main.tf.tmpl
@@ -90,9 +90,9 @@ locals {
   cluster_subnet_cidr       = var.add_cluster_firewall_rules ? data.google_compute_subnetwork.gke_subnetwork[0].ip_cidr_range : null
   cluster_alias_ranges_cidr = var.add_cluster_firewall_rules ? { for range in toset(data.google_compute_subnetwork.gke_subnetwork[0].secondary_ip_range) : range.range_name => range.ip_cidr_range } : {}
 {% if autopilot_cluster != true %}
-  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? compact(concat([local.cluster_alias_ranges_cidr[var.ip_range_pods]], [for k, v in merge(local.node_pools, local.windows_node_pools): local.cluster_alias_ranges_cidr[v.pod_range] if length(lookup(v, "pod_range", "")) > 0] )) : []
+  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? compact(concat([local.cluster_alias_ranges_cidr[var.ip_range_pods]], [for range in var.additional_ip_range_pods : local.cluster_alias_ranges_cidr[range] if length(range) > 0], [for k, v in merge(local.node_pools, local.windows_node_pools) : local.cluster_alias_ranges_cidr[v.pod_range] if length(lookup(v, "pod_range", "")) > 0])) : []
 {% else %}
-  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? [local.cluster_alias_ranges_cidr[var.ip_range_pods]] : []
+  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? compact(concat([local.cluster_alias_ranges_cidr[var.ip_range_pods]], [for range in var.additional_ip_range_pods : local.cluster_alias_ranges_cidr[range] if length(range) > 0])) : []
 {% endif %}
 
 {% if autopilot_cluster != true %}

diff --git a/autogen/main/variables.tf.tmpl b/autogen/main/variables.tf.tmpl
@@ -139,6 +139,12 @@ variable "ip_range_pods" {
   description = "The _name_ of the secondary subnet ip range to use for pods"
 }
 
+variable "additional_ip_range_pods" {
+  type        = list(string)
+  description = "List of _names_ of the additional secondary subnet ip ranges to use for pods"
+  default     = []
+}
+
 variable "ip_range_services" {
   type        = string
   description = "The _name_ of the secondary subnet range to use for services"

diff --git a/autogen/main/versions.tf.tmpl b/autogen/main/versions.tf.tmpl
@@ -24,11 +24,11 @@ terraform {
   required_providers {
     google = {
       source  = "hashicorp/google"
-      version = ">= 4.76.0, < 5.0, !=4.65.0, !=4.65.1"
+      version = ">= 4.80.0, < 5.0, !=4.65.0, !=4.65.1"
     }
     google-beta = {
       source  = "hashicorp/google-beta"
-      version = ">= 4.76.0, < 5.0, !=4.65.0, !=4.65.1"
+      version = ">= 4.80.0, < 5.0, !=4.65.0, !=4.65.1"
     }
     kubernetes = {
       source  = "hashicorp/kubernetes"
@@ -46,7 +46,7 @@ terraform {
   required_providers {
     google = {
       source  = "hashicorp/google"
-      version = ">= 4.51.0, < 5.0, !=4.65.0, !=4.65.1"
+      version = ">= 4.80.0, < 5.0, !=4.65.0, !=4.65.1"
     }
     kubernetes = {
       source  = "hashicorp/kubernetes"

diff --git a/cluster.tf b/cluster.tf
@@ -220,6 +220,12 @@ resource "google_container_cluster" "primary" {
   ip_allocation_policy {
     cluster_secondary_range_name  = var.ip_range_pods
     services_secondary_range_name = var.ip_range_services
+    dynamic "additional_pod_ranges_config" {
+      for_each = length(var.additional_ip_range_pods) != 0 ? [1] : []
+      content {
+        pod_range_names = var.additional_ip_range_pods
+      }
+    }
   }
 
   maintenance_policy {

diff --git a/main.tf b/main.tf
@@ -79,7 +79,7 @@ locals {
 
   cluster_subnet_cidr       = var.add_cluster_firewall_rules ? data.google_compute_subnetwork.gke_subnetwork[0].ip_cidr_range : null
   cluster_alias_ranges_cidr = var.add_cluster_firewall_rules ? { for range in toset(data.google_compute_subnetwork.gke_subnetwork[0].secondary_ip_range) : range.range_name => range.ip_cidr_range } : {}
-  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? compact(concat([local.cluster_alias_ranges_cidr[var.ip_range_pods]], [for k, v in merge(local.node_pools, local.windows_node_pools) : local.cluster_alias_ranges_cidr[v.pod_range] if length(lookup(v, "pod_range", "")) > 0])) : []
+  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? compact(concat([local.cluster_alias_ranges_cidr[var.ip_range_pods]], [for range in var.additional_ip_range_pods : local.cluster_alias_ranges_cidr[range] if length(range) > 0], [for k, v in merge(local.node_pools, local.windows_node_pools) : local.cluster_alias_ranges_cidr[v.pod_range] if length(lookup(v, "pod_range", "")) > 0])) : []
 
   cluster_network_policy = var.network_policy ? [{
     enabled  = true

diff --git a/modules/beta-autopilot-private-cluster/README.md b/modules/beta-autopilot-private-cluster/README.md
@@ -74,6 +74,7 @@ Then perform the following commands on the root folder:
 | add\_cluster\_firewall\_rules | Create additional firewall rules | `bool` | `false` | no |
 | add\_master\_webhook\_firewall\_rules | Create master\_webhook firewall rules for ports defined in `firewall_inbound_ports` | `bool` | `false` | no |
 | add\_shadow\_firewall\_rules | Create GKE shadow firewall (the same as default firewall rules with firewall logs enabled). | `bool` | `false` | no |
+| additional\_ip\_range\_pods | List of _names_ of the additional secondary subnet ip ranges to use for pods | `list(string)` | `[]` | no |
 | authenticator\_security\_group | The name of the RBAC security group for use with Google security groups in Kubernetes RBAC. Group name must be in format [email protected] | `string` | `null` | no |
 | cluster\_ipv4\_cidr | The IP address range of the kubernetes pods in this cluster. Default is an automatically assigned CIDR. | `string` | `null` | no |
 | cluster\_resource\_labels | The GCE resource labels (a map of key/value pairs) to be applied to the cluster | `map(string)` | `{}` | no |

diff --git a/modules/beta-autopilot-private-cluster/cluster.tf b/modules/beta-autopilot-private-cluster/cluster.tf
@@ -138,6 +138,12 @@ resource "google_container_cluster" "primary" {
   ip_allocation_policy {
     cluster_secondary_range_name  = var.ip_range_pods
     services_secondary_range_name = var.ip_range_services
+    dynamic "additional_pod_ranges_config" {
+      for_each = length(var.additional_ip_range_pods) != 0 ? [1] : []
+      content {
+        pod_range_names = var.additional_ip_range_pods
+      }
+    }
   }
 
   maintenance_policy {

diff --git a/modules/beta-autopilot-private-cluster/main.tf b/modules/beta-autopilot-private-cluster/main.tf
@@ -62,7 +62,7 @@ locals {
 
   cluster_subnet_cidr       = var.add_cluster_firewall_rules ? data.google_compute_subnetwork.gke_subnetwork[0].ip_cidr_range : null
   cluster_alias_ranges_cidr = var.add_cluster_firewall_rules ? { for range in toset(data.google_compute_subnetwork.gke_subnetwork[0].secondary_ip_range) : range.range_name => range.ip_cidr_range } : {}
-  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? [local.cluster_alias_ranges_cidr[var.ip_range_pods]] : []
+  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? compact(concat([local.cluster_alias_ranges_cidr[var.ip_range_pods]], [for range in var.additional_ip_range_pods : local.cluster_alias_ranges_cidr[range] if length(range) > 0])) : []
 
 
   cluster_authenticator_security_group = var.authenticator_security_group == null ? [] : [{

diff --git a/modules/beta-autopilot-private-cluster/variables.tf b/modules/beta-autopilot-private-cluster/variables.tf
@@ -131,6 +131,12 @@ variable "ip_range_pods" {
   description = "The _name_ of the secondary subnet ip range to use for pods"
 }
 
+variable "additional_ip_range_pods" {
+  type        = list(string)
+  description = "List of _names_ of the additional secondary subnet ip ranges to use for pods"
+  default     = []
+}
+
 variable "ip_range_services" {
   type        = string
   description = "The _name_ of the secondary subnet range to use for services"

diff --git a/modules/beta-autopilot-private-cluster/versions.tf b/modules/beta-autopilot-private-cluster/versions.tf
@@ -21,11 +21,11 @@ terraform {
   required_providers {
     google = {
       source  = "hashicorp/google"
-      version = ">= 4.76.0, < 5.0, !=4.65.0, !=4.65.1"
+      version = ">= 4.80.0, < 5.0, !=4.65.0, !=4.65.1"
     }
     google-beta = {
       source  = "hashicorp/google-beta"
-      version = ">= 4.76.0, < 5.0, !=4.65.0, !=4.65.1"
+      version = ">= 4.80.0, < 5.0, !=4.65.0, !=4.65.1"
     }
     kubernetes = {
       source  = "hashicorp/kubernetes"

diff --git a/modules/beta-autopilot-public-cluster/README.md b/modules/beta-autopilot-public-cluster/README.md
@@ -68,6 +68,7 @@ Then perform the following commands on the root folder:
 | add\_cluster\_firewall\_rules | Create additional firewall rules | `bool` | `false` | no |
 | add\_master\_webhook\_firewall\_rules | Create master\_webhook firewall rules for ports defined in `firewall_inbound_ports` | `bool` | `false` | no |
 | add\_shadow\_firewall\_rules | Create GKE shadow firewall (the same as default firewall rules with firewall logs enabled). | `bool` | `false` | no |
+| additional\_ip\_range\_pods | List of _names_ of the additional secondary subnet ip ranges to use for pods | `list(string)` | `[]` | no |
 | authenticator\_security\_group | The name of the RBAC security group for use with Google security groups in Kubernetes RBAC. Group name must be in format [email protected] | `string` | `null` | no |
 | cluster\_ipv4\_cidr | The IP address range of the kubernetes pods in this cluster. Default is an automatically assigned CIDR. | `string` | `null` | no |
 | cluster\_resource\_labels | The GCE resource labels (a map of key/value pairs) to be applied to the cluster | `map(string)` | `{}` | no |

diff --git a/modules/beta-autopilot-public-cluster/cluster.tf b/modules/beta-autopilot-public-cluster/cluster.tf
@@ -138,6 +138,12 @@ resource "google_container_cluster" "primary" {
   ip_allocation_policy {
     cluster_secondary_range_name  = var.ip_range_pods
     services_secondary_range_name = var.ip_range_services
+    dynamic "additional_pod_ranges_config" {
+      for_each = length(var.additional_ip_range_pods) != 0 ? [1] : []
+      content {
+        pod_range_names = var.additional_ip_range_pods
+      }
+    }
   }
 
   maintenance_policy {

diff --git a/modules/beta-autopilot-public-cluster/main.tf b/modules/beta-autopilot-public-cluster/main.tf
@@ -62,7 +62,7 @@ locals {
 
   cluster_subnet_cidr       = var.add_cluster_firewall_rules ? data.google_compute_subnetwork.gke_subnetwork[0].ip_cidr_range : null
   cluster_alias_ranges_cidr = var.add_cluster_firewall_rules ? { for range in toset(data.google_compute_subnetwork.gke_subnetwork[0].secondary_ip_range) : range.range_name => range.ip_cidr_range } : {}
-  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? [local.cluster_alias_ranges_cidr[var.ip_range_pods]] : []
+  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? compact(concat([local.cluster_alias_ranges_cidr[var.ip_range_pods]], [for range in var.additional_ip_range_pods : local.cluster_alias_ranges_cidr[range] if length(range) > 0])) : []
 
 
   cluster_authenticator_security_group = var.authenticator_security_group == null ? [] : [{

diff --git a/modules/beta-autopilot-public-cluster/variables.tf b/modules/beta-autopilot-public-cluster/variables.tf
@@ -131,6 +131,12 @@ variable "ip_range_pods" {
   description = "The _name_ of the secondary subnet ip range to use for pods"
 }
 
+variable "additional_ip_range_pods" {
+  type        = list(string)
+  description = "List of _names_ of the additional secondary subnet ip ranges to use for pods"
+  default     = []
+}
+
 variable "ip_range_services" {
   type        = string
   description = "The _name_ of the secondary subnet range to use for services"

diff --git a/modules/beta-autopilot-public-cluster/versions.tf b/modules/beta-autopilot-public-cluster/versions.tf
@@ -21,11 +21,11 @@ terraform {
   required_providers {
     google = {
       source  = "hashicorp/google"
-      version = ">= 4.76.0, < 5.0, !=4.65.0, !=4.65.1"
+      version = ">= 4.80.0, < 5.0, !=4.65.0, !=4.65.1"
     }
     google-beta = {
       source  = "hashicorp/google-beta"
-      version = ">= 4.76.0, < 5.0, !=4.65.0, !=4.65.1"
+      version = ">= 4.80.0, < 5.0, !=4.65.0, !=4.65.1"
     }
     kubernetes = {
       source  = "hashicorp/kubernetes"

diff --git a/modules/beta-private-cluster-update-variant/README.md b/modules/beta-private-cluster-update-variant/README.md
@@ -167,6 +167,7 @@ Then perform the following commands on the root folder:
 | add\_cluster\_firewall\_rules | Create additional firewall rules | `bool` | `false` | no |
 | add\_master\_webhook\_firewall\_rules | Create master\_webhook firewall rules for ports defined in `firewall_inbound_ports` | `bool` | `false` | no |
 | add\_shadow\_firewall\_rules | Create GKE shadow firewall (the same as default firewall rules with firewall logs enabled). | `bool` | `false` | no |
+| additional\_ip\_range\_pods | List of _names_ of the additional secondary subnet ip ranges to use for pods | `list(string)` | `[]` | no |
 | authenticator\_security\_group | The name of the RBAC security group for use with Google security groups in Kubernetes RBAC. Group name must be in format [email protected] | `string` | `null` | no |
 | cloudrun | (Beta) Enable CloudRun addon | `bool` | `false` | no |
 | cloudrun\_load\_balancer\_type | (Beta) Configure the Cloud Run load balancer type. External by default. Set to `LOAD_BALANCER_TYPE_INTERNAL` to configure as an internal load balancer. | `string` | `""` | no |

diff --git a/modules/beta-private-cluster-update-variant/cluster.tf b/modules/beta-private-cluster-update-variant/cluster.tf
@@ -277,6 +277,12 @@ resource "google_container_cluster" "primary" {
   ip_allocation_policy {
     cluster_secondary_range_name  = var.ip_range_pods
     services_secondary_range_name = var.ip_range_services
+    dynamic "additional_pod_ranges_config" {
+      for_each = length(var.additional_ip_range_pods) != 0 ? [1] : []
+      content {
+        pod_range_names = var.additional_ip_range_pods
+      }
+    }
   }
 
   maintenance_policy {

diff --git a/modules/beta-private-cluster-update-variant/main.tf b/modules/beta-private-cluster-update-variant/main.tf
@@ -79,7 +79,7 @@ locals {
 
   cluster_subnet_cidr       = var.add_cluster_firewall_rules ? data.google_compute_subnetwork.gke_subnetwork[0].ip_cidr_range : null
   cluster_alias_ranges_cidr = var.add_cluster_firewall_rules ? { for range in toset(data.google_compute_subnetwork.gke_subnetwork[0].secondary_ip_range) : range.range_name => range.ip_cidr_range } : {}
-  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? compact(concat([local.cluster_alias_ranges_cidr[var.ip_range_pods]], [for k, v in merge(local.node_pools, local.windows_node_pools) : local.cluster_alias_ranges_cidr[v.pod_range] if length(lookup(v, "pod_range", "")) > 0])) : []
+  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? compact(concat([local.cluster_alias_ranges_cidr[var.ip_range_pods]], [for range in var.additional_ip_range_pods : local.cluster_alias_ranges_cidr[range] if length(range) > 0], [for k, v in merge(local.node_pools, local.windows_node_pools) : local.cluster_alias_ranges_cidr[v.pod_range] if length(lookup(v, "pod_range", "")) > 0])) : []
 
   cluster_network_policy = var.network_policy ? [{
     enabled  = true

diff --git a/modules/beta-private-cluster-update-variant/variables.tf b/modules/beta-private-cluster-update-variant/variables.tf
@@ -137,6 +137,12 @@ variable "ip_range_pods" {
   description = "The _name_ of the secondary subnet ip range to use for pods"
 }
 
+variable "additional_ip_range_pods" {
+  type        = list(string)
+  description = "List of _names_ of the additional secondary subnet ip ranges to use for pods"
+  default     = []
+}
+
 variable "ip_range_services" {
   type        = string
   description = "The _name_ of the secondary subnet range to use for services"

diff --git a/modules/beta-private-cluster-update-variant/versions.tf b/modules/beta-private-cluster-update-variant/versions.tf
@@ -21,11 +21,11 @@ terraform {
   required_providers {
     google = {
       source  = "hashicorp/google"
-      version = ">= 4.76.0, < 5.0, !=4.65.0, !=4.65.1"
+      version = ">= 4.80.0, < 5.0, !=4.65.0, !=4.65.1"
     }
     google-beta = {
       source  = "hashicorp/google-beta"
-      version = ">= 4.76.0, < 5.0, !=4.65.0, !=4.65.1"
+      version = ">= 4.80.0, < 5.0, !=4.65.0, !=4.65.1"
     }
     kubernetes = {
       source  = "hashicorp/kubernetes"

diff --git a/modules/beta-private-cluster/README.md b/modules/beta-private-cluster/README.md
@@ -145,6 +145,7 @@ Then perform the following commands on the root folder:
 | add\_cluster\_firewall\_rules | Create additional firewall rules | `bool` | `false` | no |
 | add\_master\_webhook\_firewall\_rules | Create master\_webhook firewall rules for ports defined in `firewall_inbound_ports` | `bool` | `false` | no |
 | add\_shadow\_firewall\_rules | Create GKE shadow firewall (the same as default firewall rules with firewall logs enabled). | `bool` | `false` | no |
+| additional\_ip\_range\_pods | List of _names_ of the additional secondary subnet ip ranges to use for pods | `list(string)` | `[]` | no |
 | authenticator\_security\_group | The name of the RBAC security group for use with Google security groups in Kubernetes RBAC. Group name must be in format [email protected] | `string` | `null` | no |
 | cloudrun | (Beta) Enable CloudRun addon | `bool` | `false` | no |
 | cloudrun\_load\_balancer\_type | (Beta) Configure the Cloud Run load balancer type. External by default. Set to `LOAD_BALANCER_TYPE_INTERNAL` to configure as an internal load balancer. | `string` | `""` | no |

diff --git a/modules/beta-private-cluster/cluster.tf b/modules/beta-private-cluster/cluster.tf
@@ -277,6 +277,12 @@ resource "google_container_cluster" "primary" {
   ip_allocation_policy {
     cluster_secondary_range_name  = var.ip_range_pods
     services_secondary_range_name = var.ip_range_services
+    dynamic "additional_pod_ranges_config" {
+      for_each = length(var.additional_ip_range_pods) != 0 ? [1] : []
+      content {
+        pod_range_names = var.additional_ip_range_pods
+      }
+    }
   }
 
   maintenance_policy {

diff --git a/modules/beta-private-cluster/main.tf b/modules/beta-private-cluster/main.tf
@@ -79,7 +79,7 @@ locals {
 
   cluster_subnet_cidr       = var.add_cluster_firewall_rules ? data.google_compute_subnetwork.gke_subnetwork[0].ip_cidr_range : null
   cluster_alias_ranges_cidr = var.add_cluster_firewall_rules ? { for range in toset(data.google_compute_subnetwork.gke_subnetwork[0].secondary_ip_range) : range.range_name => range.ip_cidr_range } : {}
-  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? compact(concat([local.cluster_alias_ranges_cidr[var.ip_range_pods]], [for k, v in merge(local.node_pools, local.windows_node_pools) : local.cluster_alias_ranges_cidr[v.pod_range] if length(lookup(v, "pod_range", "")) > 0])) : []
+  pod_all_ip_ranges         = var.add_cluster_firewall_rules ? compact(concat([local.cluster_alias_ranges_cidr[var.ip_range_pods]], [for range in var.additional_ip_range_pods : local.cluster_alias_ranges_cidr[range] if length(range) > 0], [for k, v in merge(local.node_pools, local.windows_node_pools) : local.cluster_alias_ranges_cidr[v.pod_range] if length(lookup(v, "pod_range", "")) > 0])) : []
 
   cluster_network_policy = var.network_policy ? [{
     enabled  = true

diff --git a/modules/beta-private-cluster/variables.tf b/modules/beta-private-cluster/variables.tf
@@ -137,6 +137,12 @@ variable "ip_range_pods" {
   description = "The _name_ of the secondary subnet ip range to use for pods"
 }
 
+variable "additional_ip_range_pods" {
+  type        = list(string)
+  description = "List of _names_ of the additional secondary subnet ip ranges to use for pods"
+  default     = []
+}
+
 variable "ip_range_services" {
   type        = string
   description = "The _name_ of the secondary subnet range to use for services"