cloud: Prometheus integration (Preview) becomes GA

[huoyao1125]

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[gemini-code-assist]

Summary of Changes

Hello @huoyao1125, 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 the documentation for TiDB Cloud's Prometheus and Grafana integration. The core changes reflect the upcoming General Availability (GA) of the cluster-level Prometheus integration, removing its 'Preview' status throughout the document, and introducing a clear deprecation timeline for the older project-level integration, encouraging users to transition to the newer, more robust solution.

Highlights

• Cluster-level Prometheus Integration GA: The documentation now announces that the cluster-level Prometheus integration will become Generally Available (GA) starting December 2, 2025.
• Removal of 'Preview' Status: The 'Preview' designation has been removed from all mentions of the cluster-level Prometheus integration, indicating its transition to a stable release.
• Legacy Integration Deprecation: A deprecation date of January 6, 2026, has been added for the legacy project-level Prometheus integration, along with a recommendation for users to migrate to the new cluster-level integrations.
• Expanded Availability: The previous note restricting cluster-level Prometheus integration (Preview) to AWS and Google Cloud has been removed, implying broader availability.

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[gemini-code-assist]

Code Review

This pull request updates the documentation to reflect that the cluster-level Prometheus integration is now Generally Available (GA), removing the 'Preview' labels throughout the document. The changes are consistent and correct. I have one suggestion to fix what appears to be a missing hyperlink for the migration guide, ensuring users can easily find the necessary instructions.

[hfxsd]

/retest

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-12-01 07:49:42.063875872 +0000 UTC m=+249726.877653454: ☑️ agreed by hfxsd.

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[hfxsd]

/approve

[hfxsd]

/approve

[hfxsd]

/approve

[hfxsd]

/approve

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[APPROVALNOTIFIER] This PR is APPROVED

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[purelind]

/test pull-verify

[purelind]

/test ?

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