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Expand Up @@ -234,3 +234,7 @@ profile (for example, `%prod`).

The [Polaris Evolution](../evolution) page discusses backward compatibility and
upgrade concerns.

### Configuring Polaris for Cloud Storages

For guidance on configuring cloud storage providers (such as Google Cloud Storage, Amazon S3, and Azure Blob Storage) for use with Polaris—including credential vending, IAM roles, ACL requirements, and best practices—see [Configuring Cloud Storage](./configuring-cloud-storage-specific/).

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Suggestion: For guidance on configuring cloud storage providers ... see child pages (links in the left-hand pane)

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cool!!

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title: Configuring Cloud Storage

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Suggestion: how about Configuring GCS Cloud Storage?

If AWS S3, etc. are added later, it will be a new page, not an edit to this page, which will be easier to maintain, IMHO... but current layout is ok too.

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sounds good!!

linkTitle: Configuring Cloud Storage
type: docs
weight: 600
---

This page provides guidance for configuring cloud storage providers (such as Google Cloud Storage, Amazon S3, and Azure Blob Storage) for use with Polaris.
It covers credential vending, IAM roles, ACL requirements, and best practices to ensure secure and reliable integration.

#### GCS

When using credential vending for Google Cloud Storage (GCS) with Apache Iceberg on
Polaris, ensure that both IAM roles and HNS ACLs (if HNS is enabled) are properly configured. Even with the correct IAM
role (e.g., `roles/storage.objectAdmin`), access to paths such as `gs://<bucket>/idsp_ns/sample_table4/` may fail with
403 errors if HNS ACLs are missing for scoped tokens. The original access token may work, but scoped (vended) tokens
require HNS ACLs on the base path or relevant subpath. Polaris does not require HNS to be enabled for basic operation,
but if HNS is enabled and credential vending is used, HNS ACLs are mandatory for scoped token access. Always verify HNS ACLs
in addition to IAM roles when troubleshooting GCS access issues with credential vending and HNS enabled.
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