gke-cluster

GKE cluster module

This module allows simplified creation and management of GKE clusters and should be used together with the GKE nodepool module, as the default nodepool is turned off here and cannot be re-enabled. Some sensible defaults are set initially, in order to allow less verbose usage for most use cases.

Example

GKE Cluster

module "cluster-1" {
  source     = "./fabric/modules/gke-cluster"
  project_id = "myproject"
  name       = "cluster-1"
  location   = "europe-west1-b"
  vpc_config = {
    network    = var.vpc.self_link
    subnetwork = var.subnet.self_link
    secondary_range_names = {
      pods     = "pods"
      services = "services"
    }
    master_authorized_ranges = {
      internal-vms = "10.0.0.0/8"
    }
    master_ipv4_cidr_block = "192.168.0.0/28"
  }
  max_pods_per_node = 32
  private_cluster_config = {
    enable_private_endpoint = true
    master_global_access    = false
  }
  labels = {
    environment = "dev"
  }
}
# tftest modules=1 resources=1 inventory=basic.yaml

GKE Cluster with Dataplane V2 enabled

module "cluster-1" {
  source     = "./fabric/modules/gke-cluster"
  project_id = "myproject"
  name       = "cluster-dataplane-v2"
  location   = "europe-west1-b"
  vpc_config = {
    network    = var.vpc.self_link
    subnetwork = var.subnet.self_link
    secondary_range_names = {
      pods     = "pods"
      services = "services"
    }
    master_authorized_ranges = {
      internal-vms = "10.0.0.0/8"
    }
    master_ipv4_cidr_block = "192.168.0.0/28"
  }
  private_cluster_config = {
    enable_private_endpoint = true
    master_global_access    = false
  }
  enable_features = {
    dataplane_v2      = true
    workload_identity = true
  }
  labels = {
    environment = "dev"
  }
}
# tftest modules=1 resources=1 inventory=dataplane-v2.yaml

Autopilot Cluster

module "cluster-autopilot" {
  source     = "./fabric/modules/gke-cluster"
  project_id = "myproject"
  name       = "cluster-autopilot"
  location   = "europe-west1-b"
  vpc_config = {
    network    = var.vpc.self_link
    subnetwork = var.subnet.self_link
    secondary_range_names = {
      pods     = "pods"
      services = "services"
    }
    master_authorized_ranges = {
      internal-vms = "10.0.0.0/8"
    }
    master_ipv4_cidr_block = "192.168.0.0/28"
  }
  enable_features = {
    autopilot = true
  }
}
# tftest modules=1 resources=1 inventory=autopilot.yaml

Cloud DNS

This example shows how to use Cloud DNS as a Kubernetes DNS provider for GKE Standard clusters.

module "cluster-1" {
  source     = "./fabric/modules/gke-cluster"
  project_id = var.project_id
  name       = "cluster-1"
  location   = "europe-west1-b"
  vpc_config = {
    network               = var.vpc.self_link
    subnetwork            = var.subnet.self_link
    secondary_range_names = { pods = "pods", services = "services" }
  }
  enable_features = {
    dns = {
      provider = "CLOUD_DNS"
      scope    = "CLUSTER_SCOPE"
      domain   = "gke.local"
    }
  }
}
# tftest modules=1 resources=1 inventory=dns.yaml

Variables

name	description	type	required	default
location	Cluster zone or region.	string	✓
name	Cluster name.	string	✓
project_id	Cluster project id.	string	✓
vpc_config	VPC-level configuration.	object({…})	✓
cluster_autoscaling	Enable and configure limits for Node Auto-Provisioning with Cluster Autoscaler.	object({…})		null
description	Cluster description.	string		null
enable_addons	Addons enabled in the cluster (true means enabled).	object({…})		{…}
enable_features	Enable cluster-level features. Certain features allow configuration.	object({…})		{…}
issue_client_certificate	Enable issuing client certificate.	bool		false
labels	Cluster resource labels.	map(string)		null
logging_config	Logging configuration.	list(string)		["SYSTEM_COMPONENTS"]
maintenance_config	Maintenance window configuration.	object({…})		{…}
max_pods_per_node	Maximum number of pods per node in this cluster.	number		110
min_master_version	Minimum version of the master, defaults to the version of the most recent official release.	string		null
monitoring_config	Monitoring components.	object({…})		{…}
node_locations	Zones in which the cluster's nodes are located.	list(string)		[]
private_cluster_config	Private cluster configuration.	object({…})		null
release_channel	Release channel for GKE upgrades.	string		null
tags	Network tags applied to nodes.	list(string)		null

Outputs

name	description	sensitive
ca_certificate	Public certificate of the cluster (base64-encoded).	✓
cluster	Cluster resource.	✓
endpoint	Cluster endpoint.
id	Cluster ID.
location	Cluster location.
master_version	Master version.
name	Cluster name.
notifications	GKE PubSub notifications topic.
self_link	Cluster self link.	✓
workload_identity_pool	Workload identity pool.