Can TiDB be downgraded? For example, from 6.5 to 6.1

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1

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This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: TiDB可以降版本吗？例如从6.5降到6.1

| username: TiDBer_8aM3dZG6

[TiDB Usage Environment] Production Environment / Testing / PoC
[TiDB Version]
[Reproduction Path] What operations were performed when the issue occurred
[Encountered Issue: Issue Phenomenon and Impact]
Due to the CPU not supporting TiFlash version 6.5, I want to downgrade from version 6.5 to version 6.1. Is there any simple and quick method?
PD: 3 nodes, TiDB: 2 nodes, TiKV: 4 nodes.
[Resource Configuration]
[Attachments: Screenshots/Logs/Monitoring]

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| username: redgame | Original post link

Sure, sure, sure.

3
| username: redgame | Original post link

What’s not possible? Which software is not possible…

4
| username: redgame | Original post link

Just reinstall one.

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| username: 啦啦啦啦啦 | Original post link

Upgrading does not support rollback. You can consider setting up a new cluster and using TiCDC to synchronize data before switching.