variables.tf

variable "hcloud_token" {
  type        = string
  sensitive   = true
  description = "Hetzner Cloud API token"
}

variable "labels" {
  type        = map(string)
  description = "Labels to apply to all resources"
  default     = {
    environment = "production"
  }
}

variable "environment" {
  description = "The name to use for all the cluster resources"
  type        = string
}

variable "cluster_name" {
  description = "The name to use for all the cluster resources"
  type        = string
}

variable "cluster_server_os" {
  description = "The OS to use for the cluster servers"
  type        = string
  default     = "ubuntu-24.04"
}

variable "cluster_master_node_type" {
  description = "The server type to use for the master node"
  type        = string
  default     = "cax11"
}

variable "cluster_location" {
  description = "The location to use for the cluster"
  type        = string
  default     = "hel1"
  validation {
    condition     = can(regex("^[a-z0-9]+$", var.cluster_location))
    error_message = "The cluster location must be lowercase."
  }
}

variable "cluster_worker_node_count" {
  description = "The number of worker nodes to create"
  type        = number
  default     = 1
  validation {
    condition     = var.cluster_worker_node_count >= 0
    error_message = "The number of worker nodes must be greater than or equal to 0."
  }
}

variable "cluster_worker_node_type" {
  description = "The server type to use for the worker nodes"
  type        = string
  default     = "cax11"
}

variable "ssh_port" {
  description = "The main SSH port to connect to the nodes."
  type        = number
  default     = 22

  validation {
    condition     = var.ssh_port >= 0 && var.ssh_port <= 65535
    error_message = "The SSH port must use a valid range from 0 to 65535."
  }
}

variable "ssh_user" {
  description = "The SSH user to connect to the nodes."
  type        = string
  default     = "root"
}

variable "firewall_ids" {
  description = "List of firewall IDs to attach to the nodes."
  type        = list(string)
  default     = []
}

variable "cluster_private_network_name" {
  description = "The name to use for the private network."
  type        = string
  default     = "kubernetes-cluster"
}

variable "cluster_private_network_ip_range" {
  description = "The IP range to use for the private network."
  type        = string
  default     = "10.0.0.0/16"
}

variable "cluster_private_network_subnet_ip_range" {
  description = "The IP range to use for the private network."
  type        = string
  default     = "10.0.1.0/24"
}

variable "cluster_private_network_subnet_zone" {
  description = "The IP range to use for the private network."
  type        = string
  default     = "eu-central"
}

variable "cluster_master_node_private_ip" {
  description = "The private IP address of the master node."
  type        = string
  default     = "10.0.1.1"
}

variable "k3s_file_path" {
  description = "The path to the k3s.yaml file."
  type        = string
  default     = "/etc/rancher/k3s/k3s.yaml"
}

variable "generated_ssh_key_name" {
  type        = string
  default     = "terraform-key-pair"
  description = "Key-pair generated by Terraform"
}

variable "ssh_key_algorithm" {
  description = "The SSH key algorithm to use."
  type        = string
  default     = "RSA"
}

variable "cluster_firewall_name" {
  description = "The name to use for the firewall."
  type        = string
  default     = "k3s-firewall"
}