variables.tf

/**
 * Copyright 2019 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.
 */

variable "project_id" {
  type        = string
  description = "The GCP project ID"
  default     = null
}

variable "name_prefix" {
  description = "Name prefix for the instance template"
  default     = "default-instance-template"
}

variable "machine_type" {
  description = "Machine type to create, e.g. n1-standard-1"
  default     = "n1-standard-1"
}

variable "min_cpu_platform" {
  description = "Specifies a minimum CPU platform. Applicable values are the friendly names of CPU platforms, such as Intel Haswell or Intel Skylake. See the complete list: https://cloud.google.com/compute/docs/instances/specify-min-cpu-platform"
  type        = string
  default     = null
}

variable "can_ip_forward" {
  description = "Enable IP forwarding, for NAT instances for example"
  default     = "false"
}

variable "tags" {
  type        = list(string)
  description = "Network tags, provided as a list"
  default     = []
}

variable "labels" {
  type        = map(string)
  description = "Labels, provided as a map"
  default     = {}
}

variable "preemptible" {
  type        = bool
  description = "Allow the instance to be preempted"
  default     = false
}

variable "on_host_maintenance" {
  type        = string
  description = "Instance availability Policy"
  default     = "MIGRATE"
}

variable "region" {
  type        = string
  description = "Region where the instance template should be created."
  default     = null
}

#######
# disk
#######
variable "source_image" {
  description = "Source disk image. If neither source_image nor source_image_family is specified, defaults to the latest public CentOS image."
  default     = ""
}

variable "source_image_family" {
  description = "Source image family. If neither source_image nor source_image_family is specified, defaults to the latest public CentOS image."
  default     = "centos-7"
}

variable "source_image_project" {
  description = "Project where the source image comes from. The default project contains CentOS images."
  default     = "centos-cloud"
}

variable "disk_size_gb" {
  description = "Boot disk size in GB"
  default     = "100"
}

variable "disk_type" {
  description = "Boot disk type, can be either pd-ssd, local-ssd, or pd-standard"
  default     = "pd-standard"
}

variable "disk_labels" {
  description = "Labels to be assigned to boot disk, provided as a map"
  type        = map(string)
  default     = {}
}

variable "disk_encryption_key" {
  description = "The self link of the encryption key that is stored in Google Cloud KMS to use to encrypt all the disks on this instance"
  type        = string
  default     = null
}

variable "auto_delete" {
  description = "Whether or not the boot disk should be auto-deleted"
  default     = "true"
}

variable "additional_disks" {
  description = "List of maps of additional disks. See https://www.terraform.io/docs/providers/google/r/compute_instance_template.html#disk_name"
  type = list(object({
    disk_name    = string
    device_name  = string
    auto_delete  = bool
    boot         = bool
    disk_size_gb = number
    disk_type    = string
    disk_labels  = map(string)
  }))
  default = []
}

####################
# network_interface
####################
variable "network" {
  description = "The name or self_link of the network to attach this interface to. Use network attribute for Legacy or Auto subnetted networks and subnetwork for custom subnetted networks."
  default     = ""
}

variable "subnetwork" {
  description = "The name of the subnetwork to attach this interface to. The subnetwork must exist in the same region this instance will be created in. Either network or subnetwork must be provided."
  default     = ""
}

variable "subnetwork_project" {
  description = "The ID of the project in which the subnetwork belongs. If it is not provided, the provider project is used."
  default     = ""
}

variable "network_ip" {
  description = "Private IP address to assign to the instance if desired."
  default     = ""
}

###########
# metadata
###########

variable "startup_script" {
  description = "User startup script to run when instances spin up"
  default     = ""
}

variable "metadata" {
  type        = map(string)
  description = "Metadata, provided as a map"
  default     = {}
}

##################
# service_account
##################

variable "service_account" {
  type = object({
    email  = string
    scopes = set(string)
  })
  description = "Service account to attach to the instance. See https://www.terraform.io/docs/providers/google/r/compute_instance_template.html#service_account."
}

###########################
# Shielded VMs
###########################
variable "enable_shielded_vm" {
  default     = false
  description = "Whether to enable the Shielded VM configuration on the instance. Note that the instance image must support Shielded VMs. See https://cloud.google.com/compute/docs/images"
}

variable "shielded_instance_config" {
  description = "Not used unless enable_shielded_vm is true. Shielded VM configuration for the instance."
  type = object({
    enable_secure_boot          = bool
    enable_vtpm                 = bool
    enable_integrity_monitoring = bool
  })

  default = {
    enable_secure_boot          = true
    enable_vtpm                 = true
    enable_integrity_monitoring = true
  }
}

###########################
# Confidential Compute VMs
###########################
variable "enable_confidential_vm" {
  default     = false
  description = "Whether to enable the Confidential VM configuration on the instance. Note that the instance image must support Confidential VMs. See https://cloud.google.com/compute/docs/images"
}

###########################
# Public IP
###########################
variable "access_config" {
  description = "Access configurations, i.e. IPs via which the VM instance can be accessed via the Internet."
  type = list(object({
    nat_ip       = string
    network_tier = string
  }))
  default = []
}

###########################
# Guest Accelerator (GPU)
###########################
variable "gpu" {
  description = "GPU information. Type and count of GPU to attach to the instance template. See https://cloud.google.com/compute/docs/gpus more details"
  type = object({
    type  = string
    count = number
  })
  default = null
}