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pd-ctl: add notice for member delete (#21374)#21385

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ti-chi-bot[bot] merged 4 commits intopingcap:release-7.5from
ti-chi-bot:cherry-pick-21374-to-release-7.5
Jul 14, 2025
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pd-ctl: add notice for member delete (#21374)#21385
ti-chi-bot[bot] merged 4 commits intopingcap:release-7.5from
ti-chi-bot:cherry-pick-21374-to-release-7.5

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This is an automated cherry-pick of #21374

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@ti-chi-bot ti-chi-bot added lgtm needs-1-more-lgtm Indicates a PR needs 1 more LGTM. ONCALL Relates to documentation oncall. size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. type/cherry-pick-for-release-7.5 This PR is cherry-picked to release-7.5 from a source PR. type/enhancement The issue or PR belongs to an enhancement. labels Jul 14, 2025
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Summary of Changes

Hello @ti-chi-bot, 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 enhances the documentation for the pd-ctl command-line tool by adding a crucial safety notice. The update aims to prevent potential misconfigurations or data loss in production environments by guiding users to the correct methods for managing PD nodes, rather than using a command that might be misused.

Highlights

  • Documentation Update: A new prominent warning note has been added to the documentation for the pd-ctl member delete command.
  • Operational Safety: The added note explicitly advises users NOT to use the member delete command to remove PD nodes in a production environment, directing them instead to the recommended procedures for scaling in a TiDB/PD/TiKV cluster or manually scaling TiDB on Kubernetes.
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Oreoxmt commented Jul 14, 2025

/approve

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ti-chi-bot bot commented Jul 14, 2025

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Oreoxmt

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@ti-chi-bot ti-chi-bot bot added the approved label Jul 14, 2025
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Code Review

This pull request adds an important warning to the pd-ctl documentation, advising against using member delete in production environments. My review focuses on improving the clarity and accuracy of the provided alternative instructions, ensuring users can easily find the correct procedure for their specific deployment type (TiUP or Kubernetes) as per the documentation style guide.


> **Note:**
>
> **DO NOT** use the `member delete` command to remove PD nodes in a production environment. To remove a PD node, see [Scale in a TiDB/PD/TiKV cluster](/scale-tidb-using-tiup.md#scale-in-a-tidbpdtikv-cluster) and [Manually Scale TiDB on Kubernetes](https://docs.pingcap.com/tidb-in-kubernetes/stable/scale-a-tidb-cluster/).
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medium

To enhance clarity and conciseness, rephrase the second sentence to guide users more directly to the relevant documentation based on their deployment type (TiUP or Kubernetes).12

Style Guide References

Suggested change
> **DO NOT** use the `member delete` command to remove PD nodes in a production environment. To remove a PD node, see [Scale in a TiDB/PD/TiKV cluster](/scale-tidb-using-tiup.md#scale-in-a-tidbpdtikv-cluster) and [Manually Scale TiDB on Kubernetes](https://docs.pingcap.com/tidb-in-kubernetes/stable/scale-a-tidb-cluster/).
> **DO NOT** use the `member delete` command to remove PD nodes in a production environment. To remove a PD node, refer to the scaling instructions for [TiUP](/scale-tidb-using-tiup.md#scale-in-a-tidbpdtikv-cluster) or [Kubernetes](https://docs.pingcap.com/tidb-in-kubernetes/stable/scale-a-tidb-cluster/) deployments.

Footnotes

  1. The documentation should be clear, simple, complete, and readable. (link)

  2. If something might confuse a new user, suggest a reword. (link)

@ti-chi-bot ti-chi-bot bot merged commit ced40d0 into pingcap:release-7.5 Jul 14, 2025
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