Input Variables Deep Dive

Master variable types, validation, sensitive values

Input Variables Deep Dive

Beyond basic types, Terraform supports complex types:

hcl

variable "tags" {
  description = "Resource tags"
  type        = map(string)
  default     = { Environment = "dev", ManagedBy = "terraform" }
}

variable "vm_config" {
  type = object({
    size      = string
    disk_size = number
    image     = string
  })
}

variable "db_password" {
  type      = string
  sensitive = true
}

Use validation blocks for constraints and sensitive = true for secrets.

💡Need a hint? (3 available)

#1Complex types: list(), map(), object()

#2Validation uses condition + error_message

#3sensitive = true masks in logs

🔑Show solution (try it yourself first!)

variable "db_password" {
  description = "Database password"
  type        = string
  sensitive   = true
}

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📤 Output

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