Terraform配置GCP VM多扩缩容计划报错：重复设置name参数

错误原因 #

你在同一个scaling_schedules块内重复定义了name参数，Terraform要求每个块内的参数只能设置一次，这种写法违反了Terraform的块语法规则，导致报错。

解决方案 #

方案1：直接编写google_compute_autoscaler资源的正确配置 #

将两个扩缩容计划拆分为独立的scaling_schedules子块，每个块对应一个计划：

resource "google_compute_autoscaler" "default" {
  provider = google-beta
  name     = "my-autoscaler"
  zone     = "us-central1-f"
  target   = google_compute_instance_group_manager.default.id
  
  autoscaling_policy {
    max_replicas    = 5
    min_replicas    = 1
    cooldown_period = 60

    # 第一个扩缩容计划
    scaling_schedules {
      name                  = "every-weekday-morning-1"
      description           = "Increase to 2 every weekday at 7AM for 1 hour."
      min_required_replicas = 2
      schedule              = "0 7 * * MON-FRI"
      time_zone             = "America/New_York"
      duration_sec          = 3600
    }

    # 第二个扩缩容计划
    scaling_schedules {
      name                  = "every-weekday-morning-2"
      description           = "Increase to 3 every weekday at 8AM for 1 hour."
      min_required_replicas = 3
      schedule              = "0 8 * * MON-FRI"
      time_zone             = "America/New_York"
      duration_sec          = 3600
    }
  }
}

方案2：使用VM模块时的参数传递 #

如果是通过你参考的VM模块配置，需要按照变量定义的list(object)类型构造参数，将多个计划作为列表元素传入：

module "mig" {
  source = "terraform-google-modules/vm/google//modules/mig"
  # 其他必要参数（如实例模板、区域等）...

  scaling_schedules = [
    {
      name                  = "every-weekday-morning-1"
      disabled              = false
      duration_sec          = 3600
      min_required_replicas = 2
      schedule              = "0 7 * * MON-FRI"
      time_zone             = "America/New_York"
    },
    {
      name                  = "every-weekday-morning-2"
      disabled              = false
      duration_sec          = 3600
      min_required_replicas = 3
      schedule              = "0 8 * * MON-FRI"
      time_zone             = "America/New_York"
    }
  ]
}

关键说明 #

Terraform的嵌套块（如scaling_schedules）是多实例块，每个块代表一个独立的配置项，这和gcloud命令行通过多次添加参数或列表参数的逻辑不同，必须为每个扩缩容计划单独声明一个scaling_schedules块。

内容的提问来源于stack exchange，提问作者Paritosh Dubey