使用 GCP 的 Terraform：将 vm 实例复制到不同的 gcp 项目

Question

背景

我有两个 Google 云项目：[project1] 和 [project2]。 [project1] 有一个名为 my-vm 的虚拟机实例。我想将 my-vm 复制到 [project2].

我完成的步骤

因此，我创建了这个地形文件 (main.tf)：

provider "google" {
  credentials = "${file("service-account.json")}"
  project     = "[project2]"
  region      = "us-central1"
}

已将其保存到新目录中。现在，运行这个命令：

$ terraform init
$ terraform import google_compute_instance.my-vm [project1]/us-central1-a/my-vm
Error: resource address "google_compute_instance.my-vm" does not exist in the configuration.

Before importing this resource, please create its configuration in the root module. For example:

resource "google_compute_instance" "my-vm" {
  # (resource arguments)
}

此时我发现我错过了resource "google_compute_instance" "my-vm"语句。所以，我将它添加到 main.tf。现在看起来像这样：

provider "google" {
  credentials = "${file("service-account.json")}"
  project     = "[project2]"
  region      = "us-central1"
}
resource "google_compute_instance" "my-vm" {

}

现在，我运行再次使用相同的 terraform import 命令，并且成功了。已创建 terraform.tfstate 文件。但是，main.tf 文件未更改。我期待在其中看到 vm 导入的数据，但是 resource "google_compute_instance" "my-vm" 是空的 。奇怪...

现在，我正在运行执行命令 plan 并得到了这个：

$terraform plan

Error: Insufficient network_interface blocks

  on  line 0:
  (source code not available)

At least 1 "network_interface" blocks are required.


Error: Insufficient boot_disk blocks

  on  line 0:
  (source code not available)

At least 1 "boot_disk" blocks are required.


Error: Missing required argument

  on main.tf line 7, in resource "google_compute_instance" "my-vm":
   7: resource "google_compute_instance" "my-vm" {

The argument "name" is required, but no definition was found.


Error: Missing required argument

  on main.tf line 7, in resource "google_compute_instance" "my-vm":
   7: resource "google_compute_instance" "my-vm" {

The argument "machine_type" is required, but no definition was found.

问题：

为什么导入资源后无法调用plan方法？
我看到了一些使用 terraform 复制和部署的示例。所有这些示例都是根据机器的基本图像复制机器。因此，如果开发人员对虚拟机实例添加了一些更改，它不会出现在重复资源 ([project2]) 中。是否可以复制 vm-disk 而不是 vm-image？

Answer 1

Terraform 目前无法为您生成配置，import 只能将数据保存到状态文件。

文档：https://www.terraform.io/docs/import/

The current implementation of Terraform import can only import resources into the state. It does not generate configuration. A future version of Terraform will also generate configuration.

Because of this, prior to running terraform import it is necessary to write manually a resource configuration block for the resource, to which the imported object will be mapped.

While this may seem tedious, it still gives Terraform users an avenue for importing existing resources. A future version of Terraform will fully generate configuration, significantly simplifying this process.

有 third-party 种工具可以为现有资源生成 Terrafrom 配置：

GoogleCloudPlatform/terraformer

用于从现有基础设施生成 Terraform 文件的 CLI 工具（反向 Terraform）。

Is this possible to duplicate the vm-disk, instead of vm-image?

您可以从您的 VM 创建 instance template 并使用它来创建新的 VM：

使用 GCP 的 Terraform：将 vm 实例复制到不同的 gcp 项目

Terraform with GCP: copy vm instance to different gcp project

terraform

terraform-provider-gcp

背景

我完成的步骤

问题：