In response to a failure in a Cloud Build job related to Terraform code, what is the recommended action to resolve a permissions error?

The recommended action to resolve a permissions error in a Cloud Build job related to Terraform code is to assign the Cloud Build service account the roles/storage.objectAdmin IAM role on the state file bucket.

This is because managing Terraform state files is crucial for storing and reflecting the infrastructure's current state in a cloud environment. When a Cloud Build job executes, it interacts with various resources, and if it needs to access a state file stored in a Cloud Storage bucket, the associated service account must have the necessary permissions to read or modify that file. By granting the roles/storage.objectAdmin IAM role, you provide the Cloud Build service account with the ability to perform operations such as reading, writing, and deleting objects within the specified storage bucket. This action directly addresses the permissions error by ensuring the Cloud Build job has the correct level of access to the resources it needs to work with.

Using local state (modifying the Terraform code) would not resolve issues pertaining to permissions with the Cloud Storage bucket, as it changes the backend but does not increase access permissions. Creating a storage bucket is unnecessary if one already exists for the state file, and assigning the roles/owner IAM role would provide excessive permissions, which is not a best practice for limiting access according to the principle of least