```shell-session $ gcloud iam service-accounts keys create FILE_NAME.json --iam-account=NAME@PROJECT_ID.iam.gserviceaccount.com ``` ```shell-session $ gcloud iam service-accounts keys create /tmp/microservices-experiment.json --iam-account=microservices-experiment@$PROJECT_ID.iam.gserviceaccount.com ``` 参考: [Getting started with authentication  |  Authentication  |  Google Cloud](https://cloud.google.com/docs/authentication/getting-started#command-line) [[GKEのWorkload Identityの設定]] の使用がおすすめ。