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GCP Associate Cloud Engineer Practice Question

A GKE cluster uses Workload Identity. You create a Google service account (GSA) named ar-writer@PROJECT_ID. Pods running with the Kubernetes service account (KSA) default in namespace prod must push container images to Artifact Registry without using key files. Which single configuration change lets the pods authenticate as ar-writer@PROJECT_ID?

  • Set the annotation iam.gke.io/gcp-service-account=serviceAccount:PROJECT_ID.svc.id.goog[prod/default] on ar-writer@PROJECT_ID; no IAM change is required.

  • Assign the roles/artifactregistry.writer role on the project directly to the KSA default in namespace prod.

  • Add an IAM policy binding on ar-writer@PROJECT_ID that grants the iam.workloadIdentityUser role to serviceAccount:PROJECT_ID.svc.id.goog[prod/default].

  • Grant the roles/iam.serviceAccountTokenCreator role on the project to ar-writer@PROJECT_ID.

GCP Associate Cloud Engineer
Configuring access and security
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