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tikv: add command line flag --config-info #10615

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Jul 27, 2022
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tikv: add command line flag --config-info #10615

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807b1ea
add config-info
glorv Jul 21, 2022
cc71b4e
apply review comments
glorv Jul 25, 2022
1b0b225
fix blank
glorv Jul 25, 2022
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Oreoxmt Jul 26, 2022
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25 changes: 25 additions & 0 deletions command-line-flags-for-tikv-configuration.md
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,31 @@ TiKV 的命令行参数支持一些可读性好的单位转换。
+ 默认：0（无限）
+ PD 需要使用这个值来对整个集群做 balance 操作。（提示：你可以使用 10GB 来替代 10737418240，从而简化参数的传递）。

## `--config-info <FORMAT>`

+ 按照指定的 `FORMAT` 输出各个配置项的取值信息并退出。
+ `FORMAT` 可选值：`json`。
+ 目前仅支持以 JSON 格式输出每个配置项的名字 (Name)、默认值 (DefaultValue) 和当前配置值 (ValueInFile)。当执行此命令时，若同时指定了 `-C` 或 `--config` 参数，则对应的配置文件包含的配置项会同时输出当前配置值和默认值，其他未指定的配置项仅输出默认值，示例如下：

```json
{
"Component": "TiKV Server",
"Version": "6.2.0",
"Parameters": [
{
"Name": "log-level",
"DefaultValue": "info",
"ValueInFile": "warn"
},
{
"Name": "log-file",
"DefaultValue": ""
},
...
]
}
```

## `--data-dir`

+ TiKV 数据存储路径。
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