Terraform：声明结构化/类型化的本地或变量

Question

我正在实现一个 Cloudflare Terraform 脚本，但在为 zone_settings 删除重复数据块时遇到问题：

resource "cloudflare_zone_settings_override" "my-domain-settings-1" {
  zone_id = cloudflare_zone.my_domain1.id
  settings {
    # very_long_list_of_settings
  }
}

resource "cloudflare_zone_settings_override" "my-domain-settings-2" {
  zone_id = cloudflare_zone.my_domain2.id
  settings {
    # very_long_list_of_settings
  }
}

设置块有大约 60 行，完全相等。我试图通过 foreach 来实现这个：

variable domains {
  default = [
    # ERROR: Variables may not be used here.
    cloudflare_zone.my_domain1,
    cloudflare_zone.my_domain2,
  ]
}

resource "cloudflare_zone_settings_override" "partners-zone-settings" {
  name = var.domains[count.index].name
  zone_id = var.domains[count.index].id
  settings {
    # very_long_list_of_settings
  }
}

（完整代码：https://gist.github.com/knyttl/ee10aa7d63adda866fe39151a9e015d9）

但这在变量块中使用Variables may not be used here. 失败。

所以我尝试了当地人：

locals {
  zone_settings {
    # very_long_list_of_settings
    # ERROR: cannot have nested blocks
  }
}

resource "cloudflare_zone_settings_override" "my-domain-settings-1" {
  zone_id = cloudflare_zone.divadlouhasicu_cz.id
  # ERROR: An argument named "settings" is not expected here. Did you mean to define a block of type "settings"?
  settings = var.zone_settings
}

resource "cloudflare_zone_settings_override" "my-domain-settings-2" {
  zone_id = cloudflare_zone.divadlouhasicu_net.id
  # ERROR: An argument named "settings" is not expected here. Did you mean to define a block of type "settings"?
  settings = var.zone_settings
}

（完整代码：https://gist.github.com/knyttl/76ff39f3baf68df19dfbd05a37eb0ea5）

但这以上面两个 cmets 中的错误结束。

有没有办法做到这一点？

Answer 1

考沃伊托，

如果您是 Terraform 12 或更高版本，您可以使用 for_each 构造。低版本是没有办法的。

https://www.hashicorp.com/blog/hashicorp-terraform-0-12-preview-for-and-for-each

代码看起来像这样（我没有对此进行测试，因此几乎可以肯定需要进行一些修改）：

variable domains {
  default = [
    # ERROR: Variables may not be used here.
    cloudflare_zone.my_domain1,
    cloudflare_zone.my_domain2,
  ]
}

resource "cloudflare_zone_settings_override" "my-domain-settings-1" {
  for_each = var.domains

  zone_id = each.value
  settings {
    # very_long_list_of_settings
  }
}