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update the tidb configuration documents #4820

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Nov 5, 2020
Merged

update the tidb configuration documents #4820

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15 changes: 15 additions & 0 deletions command-line-flags-for-tidb-configuration.md
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Expand Up @@ -25,6 +25,16 @@ aliases: ['/docs-cn/dev/command-line-flags-for-tidb-configuration/','/docs-cn/de
+ 默认：""
+ 如果你指定了配置文件，TiDB 会首先读取配置文件的配置。如果对应的配置在命令行参数里面也存在，TiDB 就会使用命令行参数的配置来覆盖配置文件中的配置。详细的配置项请参阅 [TiDB 配置文件描述](/tidb-configuration-file.md)。

## `--config-check`

- 检查配置文件的有效性并退出
- 默认：false

## `--config-strict`

- 增强配置文件的有效性
- 默认：false

## `--cors`

+ 用于设置 TiDB HTTP 状态服务的 Access-Control-Allow-Origin
Expand All @@ -47,6 +57,11 @@ aliases: ['/docs-cn/dev/command-line-flags-for-tidb-configuration/','/docs-cn/de
+ 默认："info"
+ 可选项为：debug、info、warn、error、fatal

## `--lease`

- Schema lease 的持续时间。除非你知道更改该值带来的后果，否则你的更改操作是**危险的**。
- 默认：45s

## `--log-file`

+ Log 文件
Expand Down