Aws Iot 设备客户端设置不起作用。

Question

【以下的问题经过翻译处理】 你好，我一直在尝试按照[这里的教程](https://docs.aws.amazon.com/iot/latest/developerguide/iot-dc-install-configure.html)设置rpi，但是当我运行命令`./aws-iot-device-client --config-file ~/dc-configs/dc-testconn-config.json`时，终端上会显示错误，提示找不到aws crt sdk，并出现类似以下的致命错误：

```
2022-04-11T07:38:13.850Z [WARN]  {Config.cpp}: Key {template-name} was provided in the JSON configuration file with an empty value
2022-04-11T07:38:13.850Z [WARN]  {Config.cpp}: Key {csr-file} was provided in the JSON configuration file with an empty value
2022-04-11T07:38:13.850Z [WARN]  {Config.cpp}: Key {device-key} was provided in the JSON configuration file with an empty value
2022-04-11T07:38:13.850Z [WARN]  {Config.cpp}: Key {file} was provided in the JSON configuration file with an empty value
2022-04-11T07:38:13.850Z [WARN]  {Config.cpp}: Key {publish-file} was provided in the JSON configuration file with an empty value
2022-04-11T07:38:13.851Z [WARN]  {Config.cpp}: Key {subscribe-file} was provided in the JSON configuration file with an empty value
2022-04-11T07:38:13.851Z [WARN]  {Config.cpp}: Shadow Name {shadow-name} was provided in the JSON configuration file with an empty value
2022-04-11T07:38:13.851Z [WARN]  {Config.cpp}: Input file {shadow-input-file} was provided in the JSON configuration file with an empty value
2022-04-11T07:38:13.851Z [WARN]  {Config.cpp}: Output file {shadow-output-file} was provided in the JSON configuration file with an empty value
2022-04-11T07:38:13.851Z [INFO]  {Config.cpp}: Successfully fetched JSON config file

Answer

【以下的回答经过翻译处理】 你好，Subham。我按照教程操作成功了。你遇到的错误在这里发生：

```
    if (!FileUtils::FileExists(logFilePath))
    {
        // Create an empty file with the expected permissions.
        if (!FileUtils::CreateEmptyFileWithPermissions(logFilePath, S_IRUSR | S_IWUSR))
        {
            return false;
        }
    }
```

FileExists()返回false，但文件似乎确实存在。我认为FileExists()方法可能会遇到**failbit**、**badbit**或**eofbit**。

我认为你应该重新启动RPi，让它运行fsck。如果问题仍然存在，请删除日志并尝试再次运行：`rm /var/log/aws-iot-device-client/sdk.log`

您还可以在配置中将`enable-sdk-logging`设置为`false`，以彻底绕过此文件检查和创建。

Aws Iot 设备客户端设置不起作用。

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