Aws Iot Device Client Setup not working

Question

Hello, i have been trying to setup a rpi using the tutorials [here](https://docs.aws.amazon.com/iot/latest/developerguide/iot-dc-install-configure.html) and when i run the command 
 `./aws-iot-device-client --config-file ~/dc-configs/dc-testconn-config.json
` i am getting errors on the terminal saying that the aws crt sdk is not found with a fatal error like this 
```
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: {
  "endpoint": "a32vqcn021ykiy-ats.iot.ap-south-1.amazonaws.com",
  "cert": "~/certs/testconn/device.pem.crt",
  "key": "~/certs/testconn/private.pem.key",
  "root-ca": "~/certs/AmazonRootCA1.pem",
  "thing-name": "Triton_Dp_Office",
  "logging": {
    "enable-sdk-logging": true,
    "level": "DEBUG",
    "type": "STDOUT",
    "file": ""
  },
  "jobs": {
    "enabled": false,
    "handler-directory": ""
  },
  "tunneling": {
    "enabled": false
  },
  "device-defender": {
    "enabled": false,
    "interval": 300
  },
  "fleet-provisioning": {
    "enabled": false,
    "template-name": "",
    "template-parameters": "",
    "csr-file": "",
    "device-key": ""
  },
  "samples": {
    "pub-sub": {
      "enabled": true,
      "publish-topic": "test/dc/pubtopic",
      "publish-file": "",
      "subscribe-topic": "test/dc/subtopic",
      "subscribe-file": ""
    }
  },
  "config-shadow": {
    "enabled": false
  },
  "sample-shadow": {
    "enabled": false,
    "shadow-name": "",
    "shadow-input-file": "",
    "shadow-output-file": ""
  }
}

2022-04-11T07:38:13.851Z [DEBUG] {Config.cpp}: Did not find a runtime configuration file, assuming Fleet Provisioning has not run for this device
2022-04-11T07:38:13.852Z [DEBUG] {EnvUtils.cpp}: Updated PATH environment variable to: /home/pi/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games:/snap/bin:/home/pi/.aws-iot-device-client:/home/pi/.aws-iot-device-client/jobs:/home/pi/aws-iot-device-client/build:/home/pi/aws-iot-device-client/build/jobs
2022-04-11T07:38:13.852Z [INFO]  {Main.cpp}: Now running AWS IoT Device Client version v1.5.19-868465b
2022-04-11T07:38:13.860Z [ERROR] {FileUtils.cpp}: Failed to create empty file: /var/log/aws-iot-device-client/sdk.log errno: 17 msg: File exists
2022-04-11T07:38:13.860Z [ERROR] {Main.cpp}: *** AWS IOT DEVICE CLIENT FATAL ERROR: Failed to initialize AWS CRT SDK.
AWS IoT Device Client must abort execution, reason: Failed to initialize AWS CRT SDK
Please check the AWS IoT Device Client logs for more information
Aborted
```
I need this setup asap to work on deploying a fleet and test out AWS IOT Jobs. Any help is appreciated.

Accepted Answer

Hi Subham. I followed the tutorial and it worked for me. The error you're suffering occurs here: https://github.com/awslabs/aws-iot-device-client/blob/main/source/SharedCrtResourceManager.cpp#L135

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

FileExists() is returning false, but evidently the file does indeed exist. I think the FileExists() method is maybe hitting a **failbit**, **badbit** or **eofbit**.

I think you should reboot the RPi so it runs **fsck**. And if the problem persists, delete the log and try again: `rm /var/log/aws-iot-device-client/sdk.log`

You could also set `enable-sdk-logging` to `false` in the configuration, to bypass this file check and creation altogether.

Aws Iot Device Client Setup not working

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