add storage access configuration

[wildpcww]

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What is changed, added or deleted? (Required)

Add storage access configuration for backup and restore

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• v8.1 (TiDB 8.1 versions)
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[gemini-code-assist]

Summary of Changes

Hello @wildpcww, 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 introduces essential documentation for configuring storage access credentials for TiDB Cloud's backup and restore features. It provides clear, step-by-step instructions for both AWS S3 and Alibaba Cloud OSS, focusing on secure practices like using IAM/RAM users and granting least-privilege permissions. This enhancement aims to improve user experience and security when integrating TiDB Cloud with external cloud storage for data management.

Highlights

• Storage Access Configuration Documentation: New comprehensive documentation has been added to guide users on configuring secure storage access for backup and restore operations in TiDB Cloud.
• AWS S3 Access Key Setup: Detailed instructions are now available for setting up AWS S3 access keys, including creating IAM users, generating access keys, and defining granular permissions with an example JSON policy for data restoration.
• Alibaba Cloud OSS Access Key Setup: New guidance is provided for configuring Alibaba Cloud Object Storage Service (OSS) access, covering RAM user creation, AccessKey pair generation, and custom policy definition for restore operations.

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[gemini-code-assist]

Code Review

This pull request adds documentation for configuring storage access for backup and restore operations. The changes are clear and add valuable information for users. I've provided a few suggestions to improve formatting, consistency, and technical accuracy, including fixing an invalid JSON example and adding a missing permission. Overall, this is a great addition to the documentation.

[ti-chi-bot]

@grovecai: adding LGTM is restricted to approvers and reviewers in OWNERS files.

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-12-29 08:26:11.606268716 +0000 UTC m=+2671116.420046298: ☑️ agreed by hfxsd.
• 2025-12-29 08:33:53.538929408 +0000 UTC m=+2671578.352706980: ☑️ agreed by Oreoxmt.

[hfxsd]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hfxsd

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• OWNERS [hfxsd]

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