terraform - 从命令行为模块变量设置一个变量

Question

我有以下结构

main.tf
modules
--moduleA
----worker.tf
----variables.tf

main.tf 的内容：

module "moduleA" {
  source = "./modules/moduleA"
}

variables.tf 的内容：

variable "num_of_workers" {
  type        = number
  description = "This is number of workers"
  default     = 1

我想共同打电话terraform apply var="num_of_workers=12" 我收到一个错误：

Error: Value for undeclared variable
│ A variable named "num_of_workers" was assigned on the command line, but the root module does not declare a variable of that name. To use this value, add a "variable" block to the configuration.

有没有办法在模块的 variables.tf 中设置变量并从命令行设置它们？我在这里缺少什么？

Answer 1

您还需要在父级声明变量。然后你可以像这样将父级值传递给模块：

variable "num_of_workers" {
  type = number
}

module "moduleA" {
  source = "./modules/moduleA"
  num_of_workers = var.num_of_workers
}

然后你可以像这样在命令行设置父级值：

terraform apply -var num_of_workers=2

Answer 2

您可以从命令行分配一个变量，如下所示：

terraform apply -var num_of_workers=2

或者像这样：

terraform apply -var 'num_of_workers=2'

参考：Terraform docs