Needs approval from an approver in each of these files:
- ~~[OWNERS](https://github.com/pingcap/docs-tidb-operator/blob/release-1.4/OWNERS)~~ [ran-huang]
Approvers can indicate their approval by writing `/approve` in a comment
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This is an automated cherry-pick of #2475
First-time contributors' checklist
What is changed, added, or deleted? (Required)
When using alive PD to recreate pd cluster, there is no need to restart TiDB and TiKV, see TiUP related doc https://docs.pingcap.com/zh/tidb/stable/pd-recover#%E7%AC%AC-5-%E6%AD%A5%E6%89%A9%E5%AE%B9-pd-%E5%B9%B6%E5%90%AF%E5%8A%A8%E9%9B%86%E7%BE%A4
Which TiDB Operator version(s) do your changes apply to? (Required)
What is the related PR or file link(s)?