variable "instance_type" {
  description = "type d'une machine"
  type = string
}

variable "zone" {
  description = "je ne sais pas"
  type = string
}

variable "frontend_subnet_id" {
  description = "id du sous-réseau frontend"
  type = string
}

variable "backend_subnet_id" {
  description = "id du sous-réseau backend"
  type = string 
}

variable "database_subnet_id"{
  description = "id du sous-réseau database"
  type = string
}