Terraform 如何修复预期类型'；字符串'；，获取了无法转换的类型'；[]接口{}'；？

下面是我使用的代码示例：

main.tf

module "bar" {
   ...
   nets   = "${module.foo.nets_ids}"
}

variable "nets" {
  description = "nets desc."
  type        = "list"
}

data "template_file" "k8s_yaml" {
  template = "${file("${path.module}/car.tpl")}"

  vars = {
    ...
    nets     = "${var.nets}"
    ...
  }
}

resource "null_resource" "k8s" {
  provisioner "local-exec" {
    command = "echo '${data.template_file.k8s_yaml.rendered}' | ... "
  }
}

variable "nets" {
  description = "nets desc."
  type        = "list"
}

variables.tf

module "bar" {
   ...
   nets   = "${module.foo.nets_ids}"
}

variable "nets" {
  description = "nets desc."
  type        = "list"
}

data "template_file" "k8s_yaml" {
  template = "${file("${path.module}/car.tpl")}"

  vars = {
    ...
    nets     = "${var.nets}"
    ...
  }
}

resource "null_resource" "k8s" {
  provisioner "local-exec" {
    command = "echo '${data.template_file.k8s_yaml.rendered}' | ... "
  }
}

variable "nets" {
  description = "nets desc."
  type        = "list"
}

模块栏的main.tf

module "bar" {
   ...
   nets   = "${module.foo.nets_ids}"
}

variable "nets" {
  description = "nets desc."
  type        = "list"
}

data "template_file" "k8s_yaml" {
  template = "${file("${path.module}/car.tpl")}"

  vars = {
    ...
    nets     = "${var.nets}"
    ...
  }
}

resource "null_resource" "k8s" {
  provisioner "local-exec" {
    command = "echo '${data.template_file.k8s_yaml.rendered}' | ... "
  }
}

variable "nets" {
  description = "nets desc."
  type        = "list"
}

模块栏的变量。tf

module "bar" {
   ...
   nets   = "${module.foo.nets_ids}"
}

variable "nets" {
  description = "nets desc."
  type        = "list"
}

data "template_file" "k8s_yaml" {
  template = "${file("${path.module}/car.tpl")}"

  vars = {
    ...
    nets     = "${var.nets}"
    ...
  }
}

resource "null_resource" "k8s" {
  provisioner "local-exec" {
    command = "echo '${data.template_file.k8s_yaml.rendered}' | ... "
  }
}

variable "nets" {
  description = "nets desc."
  type        = "list"
}

在我尝试制定地形计划后，我收到：

* module.bar.data.template_file.k8s_yaml: vars: 1 error(s) decoding:

* '[nets]' expected type 'string', got unconvertible type '[]interface {}'

我发现它真的很奇怪，因为我在所有的vars定义中指定了

type:list

，为什么它认为它需要一个字符串呢

这是我的tpl文件的一个片段：

    netsIDs:
    - ${element(var.nets, 0)}
    - ${element(var.nets, 1)}
    - ${element(var.nets, 2)}

---

显然

netsIDs:${nets}

和

nets=“${jsonecode（var.nets）}”

解决了这个问题。

我想这是相关的：@Grzegorz Oledzki确实看起来很有希望，但我没有成功地使它工作起来。

template_文件

（我从未使用过）似乎强制输入字符串：/