Get started
Yandex IoT Core

Viewing the connection log

The log contains information about connecting/disconnecting devices and errors. You can view connection logs for theregistry and devices. The log uses Coordinated Universal Time, UTC.

View the registry connection log

The registry connection log contains information about operations performed with the registry certificate. Operations of devices that belong to this registry are not included in this log.

  1. In the management console, select the folder where you want to view the registry connection log.

  2. Select Yandex IoT Core.

  3. Select the registry with the desired device from the list.

  4. In the left part of the window, select Logs.

When viewing the log, you can set a specific interval using the --since and --until flags. If no interval is specified when invoking a function, information for the last hour is displayed.

The following flags are used:

  • --since: Time N and later.

  • --until: Time N and earlier.

If you only specify one flag, information is displayed for the hour before or after N depending on the flag.

Allowed time formats:

  • HH:MM:SS. Example: 15:04:05.

  • RFC-3339. Example: 2006-01-02T15:04:05Z, 2h, 3h30m ago.

If you don't have the Yandex.Cloud command line interface yet, install and initialize it.

The folder specified in the CLI profile is used by default. You can specify a different folder using the --folder-name or --folder-id parameter.

  1. Get a list of registries in a folder.

  2. View the registry connection log:

    $ yc iot registry logs my-registry

    Result:

    2019-09-19 18:51:02     connected, cert: "94ea0421199ec70f1f3d359a1c167a81de4cf6ec", address: "77.88.15.128:53171", clientID: "YCCmdLine"
2019-09-19 18:51:02     some of subscriptions failed: not allowed to subscribe: ["$device/areqjd6un3afc3cefcvm/events"]
2019-09-19 18:52:30     disconnected: client disconnected
2019-09-19 18:52:36     connected, cert: "94ea0421199ec70f1f3d359a1c167a81de4cf6ec", address: "77.88.15.128:53198", clientID: "YCCmdLine"
2019-09-19 18:52:36     some of subscriptions failed: not allowed to subscribe: ["$device/areqjd6un3afc3cefcvm/events"]
2019-09-19 18:52:54     disconnected: client disconnected
2019-09-19 18:52:58     connected, cert: "94ea0421199ec70f1f3d359a1c167a81de4cf6ec", address: "77.88.15.128:53209", clientID: "YCCmdLine"
2019-09-19 18:53:32     disconnected: client disconnected

View the device connection log

The device connection log contains information about operations performed with the device certificate.

  1. In the management console, select the folder where you want to view the device connection log.

  2. Select Yandex IoT Core.

  3. Select the registry with the desired device from the list.

  4. In the left part of the window, select Devices.

  5. Select the desired device from the list.

  6. In the left part of the window, select Logs.

When viewing the log, you can set a specific interval using the --since and --until flags. If no interval is specified when invoking a function, information for the last hour is displayed.

The following flags are used:

  • --since: Time N and later.

  • --until: Time N and earlier.

If you only specify one flag, information is displayed for the hour before or after N depending on the flag.

Allowed time formats:

  • HH:MM:SS. Example: 15:04:05.

  • RFC-3339. Example: 2006-01-02T15:04:05Z, 2h, 3h30m ago.

If you don't have the Yandex.Cloud command line interface yet, install and initialize it.

The folder specified in the CLI profile is used by default. You can specify a different folder using the --folder-name or --folder-id parameter.

  1. Get a list of devices in a registry.

  2. View the device connection log:

    $ yc iot devices logs my-device

    Result:

    2019-09-19 18:52:03     connected, cert: "ea7bd563e2352ad87e2aca529cfe3d0c3255281c", address: "77.88.15.128:53189", clientID: "YCCmdLine"
2019-09-19 18:52:03     disconnected: publish to topic "$device/areqjd6un3afc3cefcvm/events" not allowed
2019-09-19 18:52:38     connected, cert: "ea7bd563e2352ad87e2aca529cfe3d0c3255281c", address: "77.88.15.128:53201", clientID: "YCCmdLine"
2019-09-19 18:52:38     disconnected: publish to topic "$device/areqjd6un3afc3cefcvm/events" not allowed
2019-09-19 18:52:51     connected, cert: "ea7bd563e2352ad87e2aca529cfe3d0c3255281c", address: "77.88.15.128:53206", clientID: "YCCmdLine"
2019-09-19 18:52:51     disconnected: client disconnected
2019-09-19 18:53:01     connected, cert: "ea7bd563e2352ad87e2aca529cfe3d0c3255281c", address: "77.88.15.128:53213", clientID: "YCCmdLine"
2019-09-19 18:53:01     disconnected: client disconnected
2019-09-19 18:53:03     connected, cert: "ea7bd563e2352ad87e2aca529cfe3d0c3255281c", address: "77.88.15.128:53217", clientID: "YCCmdLine"
2019-09-19 18:53:03     disconnected: client disconnected
2019-09-19 18:53:04     connected, cert: "ea7bd563e2352ad87e2aca529cfe3d0c3255281c", address: "77.88.15.128:53220", clientID: "YCCmdLine"
2019-09-19 18:53:04     disconnected: client disconnected
In this article: