当我想把一个map列表传递给Terraform变量时（我使用动态块来迭代这个列表），我得到了这个错误：

│ for_each中不能使用字符串值，需要可迭代集合。

我在Azure Devops中的变量组中的Map列表：

{ "host" = "mysite1.com", "name" = "healthprobe1", "path" = "/healthcheck1" },
{ "host" = "mysite2.com", "name" = "healthprobe2", "path" = "/healthcheck2" },
{ "host" = "mysite2.com", "name" = "healthprobe3", "path" = "/healthcheck3" }

变量组中的变量：

我的Terraform配置，它迭代了一系列Map：

The variable:
variable "PROBES" {
  default     = [{}]
}

动态块：

dynamic "probe" {
    for_each = var.PROBES

    content {
      host                                      = probe.value.host
      interval                                  = 30
      minimum_servers                           = 0
      name                                      = probe.value.name
      path                                      = probe.value.path
      pick_host_name_from_backend_http_settings = false
      protocol                                  = local.protocol
      timeout                                   = 30
      unhealthy_threshold                       = 3
      match {
        status_code = ["200-399"]
      }
    }
  }