导出google云配置

如果您已经在terraform之外创建了一些东西,并且希望terraform管理它,或者希望找出如何使用terraform对其进行最佳配置 Terraform's import command 任何支持它的资源。

所以如果你创造了一个 forwarding rule 打电话 terraform-test 通过google云控制台,想知道它是如何映射到terraform的 google_compute_forwarding_rule 资源,然后您可以运行 terraform import google_compute_forwarding_rule.default terraform-test 将其导入terraform的状态文件。

如果你运行一个计划,terraform会告诉你它有 google_compute_forwarding_rule.default 处于其状态,但代码中未定义资源,因此它将要删除该资源。

如果添加使计划生效所需的最小配置:

resource "google_compute_forwarding_rule" "default" {
  name = "terraform-test"
}

然后再次运行计划terraform将告诉您需要更改什么,以使导入的转发规则看起来像您定义的配置。假设你已经做了一些事情,比如在负载均衡器上设置描述,Terraform的计划会显示出这样的情况:

An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
  + create
  ~ update in-place
-/+ destroy and then create replacement

Terraform will perform the following actions:

  ~ google_compute_forwarding_rule.default
      description:                              "This is the description I added via the console" => ""

Plan: 5 to add, 5 to change, 3 to destroy.

这告诉您terraform想要删除转发规则的描述,使其与配置匹配。

如果随后将资源定义更新为:

resource "google_compute_forwarding_rule" "default" {
  name        = "terraform-test"
  description = "This is the description I added via the console"
}

TerraForm的计划将显示一个空的变更集:

No changes. Infrastructure is up-to-date.

This means that Terraform did not detect any differences between your
configuration and real physical resources that exist. As a result, no
actions need to be performed.

此时,您已经将terraform代码与google云中资源的实际情况对齐,并且应该能够轻松地看到需要在terraform端设置什么,以便在google云中控制台中按预期发生事情。