我想为我在 Google Cloud 中运行的虚拟机进行自动部署，作为其中的一部分，我正在尝试使用服务帐户将我的文件 SCP 到 GCP 中的虚拟机，但不幸的是，我可以似乎没有弄清楚正确的权限应该是什么。
搜索文档后，我有一个具有以下权限的服务帐户：
- 计算实例.get
- compute.instances.setMetadata
- 计算.项目.get
- compute.projects.setCommonInstanceMetadata
但是当我运行以下命令时，我得到以下输出：
+ ./google-cloud-sdk/bin/gcloud auth activate-service-account --key-file=./service-account.json
Activated service account credentials for: [scp-test@my-project.iam.gserviceaccount.com]
+ ./google-cloud-sdk/bin/gcloud beta compute scp hello.txt scp-test:c:/hello.txt --quiet --project=my-project --ssh-key-file=./.ssh/key --zone=us-east4-c
WARNING: The public SSH key file for gcloud does not exist.
WARNING: The private SSH key file for gcloud does not exist.
WARNING: You do not have an SSH key for gcloud.
WARNING: SSH keygen will be executed to generate a key.
Generating public/private rsa key pair.
Your identification has been saved in /Users/mac-user/Downloads/scp-test/.ssh/key.
Your public key has been saved in /Users/mac-user/Downloads/scp-test/.ssh/key.pub.
The key fingerprint is:
{OMMITED}
The key's randomart image is:
{OMMITED}
External IP address was not found; defaulting to using IAP tunneling.
Updating project ssh metadata...failed.
Updating instance ssh metadata...failed.
ERROR: (gcloud.beta.compute.scp) Could not add SSH key to instance metadata:
- The user does not have access to service account '{OMMITED}-compute@developer.gserviceaccount.com'. User: 'scp-test@my-project.iam.gserviceaccount.com'. Ask a project owner to grant you the iam.serviceAccountUser role on the service account
授予我的 scp-test 用户 iam.serviceAccountUser 角色有效，但这似乎是不好的做法，因为它使我的 scp-test 用户能够模拟默认帐户（'{OMMITED}-compute@developer.gserviceaccount.com'。 )，这似乎使它可以完全访问所有内容。
如何仅授予它 SCP 所需的权限？