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ticdc: add mysql sink user privilege #6400

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ticdc: add mysql sink user privilege #6400

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ticdc: add mysql sink user privilege
amyangfei Jun 3, 2021
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Update ticdc/troubleshoot-ticdc.md
amyangfei Jul 5, 2021
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Expand Up @@ -415,3 +415,19 @@ mysql root@127.0.0.1:test> show create table test;
```

产生表结构不一致的原因是 `explicit_defaults_for_timestamp` 的[默认值在 TiDB 和 MySQL 5.7 不同](/mysql-compatibility.md#默认设置)。从 TiCDC v5.0.1/v4.0.13 版本开始，同步到 MySQL 会自动设置 session 变量 `explicit_defaults_for_timestamp = ON`，保证同步时间类型时上下游行为一致。对于 v5.0.1/v4.0.13 以前的版本，同步时间类型时需要注意 `explicit_defaults_for_timestamp` 默认值不同带来的兼容性问题。

## 数据同步下游的 Sink 为 TiDB 或 MySQL 时，下游数据库的用户需要哪些权限？

Sink 为 TiDB 或 MySQL 时，下游数据库的用户需要以下权限：

- `Select`
- `Index`
- `Insert`
- `Update`
- `Delete`
- `Create`
- `Drop`
- `Alter`
- `Create View`

如果要同步 `recover table` 到下游 TiDB，需要有 `Super` 权限。