variables.tf.tmpl

/**
 * Copyright 2018 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.
 */

{{ autogeneration_note }}

variable "project_id" {
  type        = string
  description = "The project ID to host the cluster in (required)"
}

variable "name" {
  type        = string
  description = "The name of the cluster (required)"
}

variable "description" {
  type        = string
  description = "The description of the cluster"
  default     = ""
}

variable "regional" {
  type        = bool
  description = "Whether is a regional cluster (zonal cluster if set false. WARNING: changing this after cluster creation is destructive!)"
  default     = true
}

variable "region" {
  type        = string
  description = "The region to host the cluster in (optional if zonal cluster / required if regional)"
  default     = null
}

variable "zones" {
  type        = list(string)
  description = "The zones to host the cluster in (optional if regional cluster / required if zonal)"
  default     = []
}

variable "network" {
  type        = string
  description = "The VPC network to host the cluster in (required)"
}

variable "network_project_id" {
  type        = string
  description = "The project ID of the shared VPC's host (for shared vpc support)"
  default     = ""
}

variable "subnetwork" {
  type        = string
  description = "The subnetwork to host the cluster in (required)"
}

variable "kubernetes_version" {
  type        = string
  description = "The Kubernetes version of the masters. If set to 'latest' it will pull latest available version in the selected region."
  default     = "latest"
}

variable "master_authorized_networks" {
  type        = list(object({ cidr_block = string, display_name = string }))
  description = "List of master authorized networks. If none are provided, disallow external access (except the cluster node IPs, which GKE automatically whitelists)."
  default     = []
}

variable "horizontal_pod_autoscaling" {
  type        = bool
  description = "Enable horizontal pod autoscaling addon"
  default     = true
}

variable "http_load_balancing" {
  type        = bool
  description = "Enable httpload balancer addon"
  default     = true
}

variable "network_policy" {
  type        = bool
  description = "Enable network policy addon"
  default     = true
}

variable "network_policy_provider" {
  type        = string
  description = "The network policy provider."
  default     = "CALICO"
}

variable "maintenance_start_time" {
  type        = string
  description = "Time window specified for daily or recurring maintenance operations in RFC3339 format"
  default     = "05:00"
}

{% if beta_cluster %}
variable "maintenance_end_time" {
  type        = string
  description = "Time window specified for recurring maintenance operations in RFC3339 format"
  default     = ""
}

variable "maintenance_recurrence" {
  type        = string
  description = "Frequency of the recurring maintenance window in RFC5545 format."
  default     = ""
}
{% endif %}

variable "ip_range_pods" {
  type        = string
  description = "The _name_ of the secondary subnet ip range to use for pods"
}

variable "ip_range_services" {
  type        = string
  description = "The _name_ of the secondary subnet range to use for services"
}

variable "initial_node_count" {
  type        = number
  description = "The number of nodes to create in this cluster's default node pool."
  default     = 0
}

variable "remove_default_node_pool" {
  type        = bool
  description = "Remove default node pool while setting up the cluster"
  default     = false
}

variable "disable_legacy_metadata_endpoints" {
  type        = bool
  description = "Disable the /0.1/ and /v1beta1/ metadata server endpoints on the node. Changing this value will cause all node pools to be recreated."
  default     = true
}

variable "node_pools" {
  type        = list(map(string))
  description = "List of maps containing node pools"

  default = [
    {
      name = "default-node-pool"
    },
  ]
}

variable "node_pools_labels" {
  type        = map(map(string))
  description = "Map of maps containing node labels by node-pool name"

  # Default is being set in variables_defaults.tf
  default = {
    all               = {}
    default-node-pool = {}
  }
}

variable "node_pools_metadata" {
  type        = map(map(string))
  description = "Map of maps containing node metadata by node-pool name"

  # Default is being set in variables_defaults.tf
  default = {
    all               = {}
    default-node-pool = {}
  }
}

variable "resource_usage_export_dataset_id" {
  type        = string
  description = "The ID of a BigQuery Dataset for using BigQuery as the destination of resource usage export."
  default     = ""
}

variable "enable_network_egress_export" {
  type        = bool
  description = "Whether to enable network egress metering for this cluster. If enabled, a daemonset will be created in the cluster to meter network egress traffic."
  default     = false
}

variable "enable_resource_consumption_export" {
  type        = bool
  description = "Whether to enable resource consumption metering on this cluster. When enabled, a table will be created in the resource export BigQuery dataset to store resource consumption data. The resulting table can be joined with the resource usage table or with BigQuery billing export."
  default     = true
}
{% if beta_cluster %}

variable "enable_kubernetes_alpha" {
  type        = bool
  description = "Whether to enable Kubernetes Alpha features for this cluster. Note that when this option is enabled, the cluster cannot be upgraded and will be automatically deleted after 30 days."
  default     = false
}

variable "cluster_autoscaling" {
  type = object({
    enabled             = bool
    autoscaling_profile = string
    min_cpu_cores       = number
    max_cpu_cores       = number
    min_memory_gb       = number
    max_memory_gb       = number
  })
  default = {
    enabled             = false
    autoscaling_profile = "BALANCED"
    max_cpu_cores       = 0
    min_cpu_cores       = 0
    max_memory_gb       = 0
    min_memory_gb       = 0
  }
  description = "Cluster autoscaling configuration. See [more details](https://cloud.google.com/kubernetes-engine/docs/reference/rest/v1beta1/projects.locations.clusters#clusterautoscaling)"
}

variable "node_pools_taints" {
  type        = map(list(object({ key = string, value = string, effect = string })))
  description = "Map of lists containing node taints by node-pool name"

  # Default is being set in variables_defaults.tf
  default = {
    all               = []
    default-node-pool = []
  }
}

{% endif %}
variable "node_pools_tags" {
  type        = map(list(string))
  description = "Map of lists containing node network tags by node-pool name"

  # Default is being set in variables_defaults.tf
  default = {
    all               = []
    default-node-pool = []
  }
}

variable "node_pools_oauth_scopes" {
  type        = map(list(string))
  description = "Map of lists containing node oauth scopes by node-pool name"

  # Default is being set in variables_defaults.tf
  default = {
    all               = ["https://www.googleapis.com/auth/cloud-platform"]
    default-node-pool = []
  }
}

variable "stub_domains" {
  type        = map(list(string))
  description = "Map of stub domains and their resolvers to forward DNS queries for a certain domain to an external DNS server"
  default     = {}
}

variable "upstream_nameservers" {
  type        = list(string)
  description = "If specified, the values replace the nameservers taken by default from the node’s /etc/resolv.conf"
  default     = []
}

variable "non_masquerade_cidrs" {
  type        = list(string)
  description = "List of strings in CIDR notation that specify the IP address ranges that do not use IP masquerading."
  default     = ["10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16"]
}

variable "ip_masq_resync_interval" {
  type        = string
  description = "The interval at which the agent attempts to sync its ConfigMap file from the disk."
  default     = "60s"
}

variable "ip_masq_link_local" {
  type        = bool
  description = "Whether to masquerade traffic to the link-local prefix (169.254.0.0/16)."
  default     = false
}

variable "configure_ip_masq" {
  description = "Enables the installation of ip masquerading, which is usually no longer required when using aliasied IP addresses. IP masquerading uses a kubectl call, so when you have a private cluster, you will need access to the API server."
  default     = false
}

variable "logging_service" {
  type        = string
  description = "The logging service that the cluster should write logs to. Available options include logging.googleapis.com, logging.googleapis.com/kubernetes (beta), and none"
  default     = "logging.googleapis.com/kubernetes"
}

variable "monitoring_service" {
  type        = string
  description = "The monitoring service that the cluster should write metrics to. Automatically send metrics from pods in the cluster to the Google Cloud Monitoring API. VM metrics will be collected by Google Compute Engine regardless of this setting Available options include monitoring.googleapis.com, monitoring.googleapis.com/kubernetes (beta) and none"
  default     = "monitoring.googleapis.com/kubernetes"
}

variable "create_service_account" {
  type        = bool
  description = "Defines if service account specified to run nodes should be created."
  default     = true
}

variable "grant_registry_access" {
  type        = bool
  description = "Grants created cluster-specific service account storage.objectViewer role."
  default     = false
}

variable "registry_project_id" {
  type        = string
  description = "Project holding the Google Container Registry. If empty, we use the cluster project. If grant_registry_access is true, storage.objectViewer role is assigned on this project."
  default     = ""
}

variable "service_account" {
  type        = string
  description = "The service account to run nodes as if not overridden in `node_pools`. The create_service_account variable default value (true) will cause a cluster-specific service account to be created."
  default     = ""
}

variable "basic_auth_username" {
  type        = string
  description = "The username to be used with Basic Authentication. An empty value will disable Basic Authentication, which is the recommended configuration."
  default     = ""
}

variable "basic_auth_password" {
  type        = string
  description = "The password to be used with Basic Authentication."
  default     = ""
}

variable "issue_client_certificate" {
  type        = bool
  description = "Issues a client certificate to authenticate to the cluster endpoint. To maximize the security of your cluster, leave this option disabled. Client certificates don't automatically rotate and aren't easily revocable. WARNING: changing this after cluster creation is destructive!"
  default     = false
}

variable "cluster_ipv4_cidr" {
  default     = null
  description = "The IP address range of the kubernetes pods in this cluster. Default is an automatically assigned CIDR."
}

variable "cluster_resource_labels" {
  type        = map(string)
  description = "The GCE resource labels (a map of key/value pairs) to be applied to the cluster"
  default     = {}
}

variable "skip_provisioners" {
  type        = bool
  description = "Flag to skip all local-exec provisioners. It breaks `stub_domains` and `upstream_nameservers` variables functionality."
  default     = false
}

variable "default_max_pods_per_node" {
  description = "The maximum number of pods to schedule per node"
  default     = 110
}
{% if private_cluster %}

variable "deploy_using_private_endpoint" {
  type        = bool
  description = "(Beta) A toggle for Terraform and kubectl to connect to the master's internal IP address during deployment."
  default     = false
}

variable "enable_private_endpoint" {
  type        = bool
  description = "(Beta) Whether the master's internal IP address is used as the cluster endpoint"
  default     = false
}

variable "enable_private_nodes" {
  type        = bool
  description = "(Beta) Whether nodes have internal IP addresses only"
  default     = false
}

variable "master_ipv4_cidr_block" {
  type        = string
  description = "(Beta) The IP range in CIDR notation to use for the hosted master network"
  default     = "10.0.0.0/28"
}
{% endif %}
{% if beta_cluster %}

variable "istio" {
  description = "(Beta) Enable Istio addon"
  default     = false
}

variable "istio_auth" {
  type        = string
  description = "(Beta) The authentication type between services in Istio."
  default     = "AUTH_MUTUAL_TLS"
}

variable "dns_cache" {
  type        = bool
  description = "(Beta) The status of the NodeLocal DNSCache addon."
  default     = false
}

variable "gce_pd_csi_driver" {
  type        = bool
  description = "(Beta) Whether this cluster should enable the Google Compute Engine Persistent Disk Container Storage Interface (CSI) Driver."
  default     = false
}

variable "kalm_config" {
  type        = bool
  description = "(Beta) Whether KALM is enabled for this cluster."
  default     = false
}

variable "config_connector" {
  type        = bool
  description = "(Beta) Whether ConfigConnector is enabled for this cluster."
  default     = false
}

variable "database_encryption" {
  description = "Application-layer Secrets Encryption settings. The object format is {state = string, key_name = string}. Valid values of state are: \"ENCRYPTED\"; \"DECRYPTED\". key_name is the name of a CloudKMS key."
  type        = list(object({ state = string, key_name = string }))

  default = [{
    state    = "DECRYPTED"
    key_name = ""
  }]
}

variable "cloudrun" {
  description = "(Beta) Enable CloudRun addon"
  default     = false
}

variable "enable_binary_authorization" {
  description = "Enable BinAuthZ Admission controller"
  default     = false
}

variable "pod_security_policy_config" {
  type        = list(object({ enabled = bool }))
  description = "enabled - Enable the PodSecurityPolicy controller for this cluster. If enabled, pods must be valid under a PodSecurityPolicy to be created."

  default = [{
    "enabled" = false
  }]
}

variable "node_metadata" {
  description = "Specifies how node metadata is exposed to the workload running on the node"
  default     = "GKE_METADATA_SERVER"
  type        = string
}

variable "sandbox_enabled" {
  type        = bool
  description = "(Beta) Enable GKE Sandbox (Do not forget to set `image_type` = `COS_CONTAINERD` to use it)."
  default     = false
}

variable "enable_intranode_visibility" {
  type        = bool
  description = "Whether Intra-node visibility is enabled for this cluster. This makes same node pod to pod traffic visible for VPC network"
  default     = false
}

variable "enable_vertical_pod_autoscaling" {
  type        = bool
  description = "Vertical Pod Autoscaling automatically adjusts the resources of pods controlled by it"
  default     = false
}

variable "identity_namespace" {
  description = "Workload Identity namespace. (Default value of `enabled` automatically sets project based namespace `[project_id].svc.id.goog`)"
  type        = string
  default     = "enabled"
}

variable "authenticator_security_group" {
  type        = string
  description = "The name of the RBAC security group for use with Google security groups in Kubernetes RBAC. Group name must be in format gke-security-groups@yourdomain.com"
  default     = null
}

variable "release_channel" {
  type        = string
  description = "(Beta) The release channel of this cluster. Accepted values are `UNSPECIFIED`, `RAPID`, `REGULAR` and `STABLE`. Defaults to `UNSPECIFIED`."
  default     = null
}

variable "enable_shielded_nodes" {
  type        = bool
  description = "Enable Shielded Nodes features on all nodes in this cluster"
  default     = true
}
{% endif %}


variable "add_cluster_firewall_rules" {
  type        = bool
  description = "Create additional firewall rules"
  default     = false
}

variable "firewall_priority" {
  type        = number
  description = "Priority rule for firewall rules"
  default     = 1000
}

variable "firewall_inbound_ports" {
  type        = list(string)
  description = "List of TCP ports for admission/webhook controllers"
  default     = ["8443", "9443", "15017"]
}