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Automated: Migrate {target_path} from gsutil to gcloud storage

This CL is part of the on going effort to migrate from the legacy gsutil tool to the new and improved gcloud storage command-line interface.
gcloud storage is the recommended and modern tool for interacting with Google Cloud Storage, offering better performance, unified authentication, and a more consistent command structure with other gcloud components. 🚀

Automation Details

This change was generated automatically by an agent that targets users of gsutil.
The transformations applied are based on the gsutil to gcloud storage migration guide.

⚠️ Action Required: Please Review and Test Carefully

While we have based the automation on the migration guide, every use case is unique.
It is crucial that you thoroughly test these changes in environments appropriate to your use-case before merging.
Be aware of potential differences between gsutil and gcloud storage that could impact your workflows.
For instance, the structure of command output may have changed, requiring updates to any scripts that parse it. Similarly, command behavior can differ subtly; the gcloud storage rsync command has a different file deletion logic than gsutil rsync, which could lead to unintended file deletions.

Our migration guides can help guide you through a list of mappings and some notable differences between the two tools.

Standard presubmit tests are run as part of this CL's workflow. If you need to target an additional test workflow or require assistance with testing, please let us know.

Please verify that all your Cloud Storage operations continue to work as expected to avoid any potential disruptions in production.

Support and Collaboration

The GCS CLI team is here to help! If you encounter any issues, have a complex use case that this automated change doesn't cover, or face any other blockers, please don't hesitate to reach out.
We are happy to work with you to test and adjust these changes as needed.

Contact: gcs-cli-hyd@google.com

We appreciate your partnership in this important migration effort!

#gsutil-migration

@bhandarivijay-png bhandarivijay-png requested review from a team as code owners January 9, 2026 07:37
@bhandarivijay-png
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Hi @engelke, Can we get your review on this PR? Thanks!

@product-auto-label product-auto-label bot added samples Issues that are directly related to samples. api: appengine Issues related to the App Engine Admin API API. labels Jan 9, 2026
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Summary of Changes

Hello @bhandarivijay-png, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request updates documentation to reflect the migration from the legacy gsutil command-line tool to the modern gcloud storage interface for interacting with Google Cloud Storage. This change is part of an ongoing effort to standardize on gcloud storage, which offers improved performance, unified authentication, and a more consistent user experience across Google Cloud tools. The changes were automatically generated and require careful review and testing to ensure compatibility with existing workflows.

Highlights

  • Command Migration: Replaced gsutil commands with their gcloud storage equivalents in documentation examples for creating Cloud Storage buckets and setting default ACLs.
  • Documentation Update: Updated README.md files in appengine/flexible/storage and appengine/flexible_python37_and_earlier/storage to reflect the new gcloud storage syntax.
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Code Review

This pull request migrates gsutil commands to gcloud storage in the README files. The automated migration is a good start, but it missed a critical detail regarding bucket creation. The new gcloud storage buckets create command enables Uniform Bucket-Level Access (UBLA) by default, which is a change from the old gsutil mb command. This change will break the subsequent steps in the README that rely on ACLs. I've added comments with suggestions to explicitly disable UBLA to maintain the original functionality of the sample.

2. Create a Cloud Storage Bucket. You can do this with the [Google Cloud SDK](https://cloud.google.com/sdk) with the following command:

$ gsutil mb gs://[your-bucket-name]
$ gcloud storage buckets create gs://[your-bucket-name]
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critical

The gcloud storage buckets create command enables Uniform Bucket-Level Access (UBLA) by default. This is a change from gsutil mb, which created buckets with fine-grained access controls (ACLs enabled) by default.

When UBLA is enabled, ACLs are disabled. This will cause the next step, gcloud storage buckets update ... --predefined-default-object-acl=public-read, to fail. The application code, which uses blob.make_public(), would also fail.

To maintain the original behavior and ensure the sample works as described, you should explicitly disable UBLA during bucket creation.

Suggested change
$ gcloud storage buckets create gs://[your-bucket-name]
$ gcloud storage buckets create gs://[your-bucket-name] --uniform-bucket-level-access=false

2. Create a Cloud Storage Bucket. You can do this with the [Google Cloud SDK](https://cloud.google.com/sdk) with the following command:

$ gsutil mb gs://[your-bucket-name]
$ gcloud storage buckets create gs://[your-bucket-name]
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critical

The gcloud storage buckets create command enables Uniform Bucket-Level Access (UBLA) by default. This is a change from gsutil mb, which created buckets with fine-grained access controls (ACLs enabled) by default.

When UBLA is enabled, ACLs are disabled. This will cause the next step, gcloud storage buckets update ... --predefined-default-object-acl=public-read, to fail. The application code, which uses blob.make_public(), would also fail.

To maintain the original behavior and ensure the sample works as described, you should explicitly disable UBLA during bucket creation.

Suggested change
$ gcloud storage buckets create gs://[your-bucket-name]
$ gcloud storage buckets create gs://[your-bucket-name] --uniform-bucket-level-access=false

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