variable "project_id" {
  description = "OVH public cloud project id (service_name). Defaults to the OVH_CLOUD_PROJECT_SERVICE variable of the runner environment, derived from the cloud account configuration."
  type        = string
  default     = null
}

variable "region" {
  description = "OVH region for all cluster instances and the private network, for example SBG5 or GRA11"
  type        = string
}

variable "deployment_id" {
  description = "Unique deployment identifier, used to build resource names"
  type        = string
}

variable "cloud_account" {
  description = "Cloud account (environment) name, second segment of the Vault credentials path"
  type        = string
}

variable "requester_unique_id" {
  description = "Requester unique id, third segment of the Vault credentials path"
  type        = string
}

variable "name_prefix" {
  description = "Prefix for all resource names"
  type        = string
  default     = "simpl"
}

variable "username" {
  description = "Consumer username on the head node, last segment of the Vault credentials path. The user exists on every node with the same uid (Slurm runs jobs under it), but can only log in on the head node."
  type        = string
  default     = "simpl_user"
}

variable "admin_username" {
  description = "Management username created on all nodes with SSH key access only"
  type        = string
  default     = "simpladmin"
}

variable "credentials_version" {
  description = "Opaque rotation marker for the consumer credential. Changing the value regenerates the consumer password, applies it on the head node over SSH and republishes the fresh credential to Vault in the same apply, without touching the cluster nodes. Managed by the credential renewal workflow, not by the deployment script author."
  type        = string
  default     = "1"
}

variable "image" {
  description = "Image name for every cluster node, must be a cloud-init enabled image"
  type        = string
  default     = "Ubuntu 24.04"
}

variable "head_flavor" {
  description = "Instance flavor for the head node, for example b3-8"
  type        = string
  default     = "b3-8"
}

variable "compute_flavor" {
  description = "Instance flavor for the compute nodes, for example b3-8"
  type        = string
  default     = "b3-8"
}

variable "compute_node_count" {
  description = "Number of compute nodes in the cluster"
  type        = number
  default     = 2

  validation {
    condition     = var.compute_node_count >= 1
    error_message = "The cluster needs at least one compute node."
  }
}

variable "compute_cpus" {
  description = "Number of schedulable CPUs per compute node, declared to the Slurm controller. Must not exceed the vCPUs of compute_flavor."
  type        = number
  default     = 2
}

variable "cluster_cidr" {
  description = "CIDR of the private cluster network. The head node takes the 50th host address, compute nodes take the 60th onward (lower pool addresses are left to the DHCP agent ports)."
  type        = string
  default     = "192.168.100.0/24"
}

variable "vlan_id" {
  description = "vRack VLAN id for the private cluster network, must be unused in the project"
  type        = number
  default     = 212
}

variable "gateway_model" {
  description = "Model (size) of the cloud gateway providing internet egress to the cluster"
  type        = string
  default     = "s"
}