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Managing device certificates

Written by
Updated at June 18, 2026

Warning

Yandex IoT Core is no longer available to new users.

Current users can create resources until November 1, 2026. Afterwards, the service will go read-only and cease to operate on December 1, 2026. For more information on the timing and procedure, see Service shutdown.

For devices and registries to begin exchanging data and commands, you need to log in. This section describes how to manage device certificates for the relevant authorization method.

Note

When using an X.509 certificate along with a password, the password has higher priority.

To access a device, use its unique ID or name. For information about how to get its unique ID or name, see Getting information about devices

Getting a list of certificates

  1. In the management console, select the folder where the device is located.
  2. Go to IoT Core.
  3. Select the registry where the device is located.
  4. Navigate to the Devices tab.
  5. Select the device.
  6. On the Overview page, go to the Certificates section.

If you do not have the Yandex Cloud CLI yet, install and initialize it.

The folder used by default is the one specified when creating the CLI profile. To change the default folder, use the yc config set folder-id <folder_ID> command. You can also specify a different folder for any command using --folder-name or --folder-id. If you access a resource by its name, the search will be limited to the default folder. If you access a resource by its ID, the search will be global, i.e., through all folders based on access permissions.

View the list of device certificates:

yc iot device certificate list --device-name my-device

Result:

+------------------------------------------+---------------------+
|               FINGERPRINT                |     CREATED AT      |
+------------------------------------------+---------------------+
| df3cc4f337eba01a264803d15b119e2d******** | 2019-05-29 17:14:36 |
| 65e5b050069da5ca5996a4a8a9251409******** | 2019-05-29 17:14:18 |
+------------------------------------------+---------------------+

To get a list of device certificates, use the listCertificates REST API method for the Device resource or the DeviceService/ListCertificates gRPC API call.

Adding a certificate

To add a device certificate:

  1. In the management console, select the folder to add the device certificate to.

  2. Navigate to IoT Core.

  3. Click the name of the registry.

  4. Navigate to Devices.

  5. Select the device from the list.

  6. On the Overview page, go to the Certificates section and click Add certificate.

    • To add a file:

      1. Select the File method.
      2. Click Attach file.
      3. Specify the certificate file on your computer and click Open.
      4. Click Add.

    • To add text:

      1. Select the Text method.
      2. Insert the certificate body in the Content field.
      3. Click Add.

If you do not have the Yandex Cloud CLI yet, install and initialize it.

Add a certificate to the device:

yc iot device certificate add \
  --device-name my-device \ # Device name.
  --certificate-file device-cert.pem # Path to the public part of the certificate.

Result:

device_id: b9135goeh1uc********
fingerprint: 65e5b050069da5ca5996a4a8a9251409********
certificate_data: |
  -----BEGIN CERTIFICATE-----
  MIIE/jCCAuagAwI...
  -----END CERTIFICATE-----
created_at: "2019-05-29T17:14:18.804Z"

With Terraform, you can quickly create a cloud infrastructure in Yandex Cloud and manage it using configuration files. These files store the infrastructure description written in HashiCorp Configuration Language (HCL). If you change the configuration files, Terraform automatically detects which part of your configuration is already deployed, and what should be added or removed.

Terraform is distributed under the Business Source License. The Yandex Cloud provider for Terraform is distributed under the MPL-2.0 license.

For more information about the provider resources, see the relevant documentation on the Terraform website or its mirror.

If you do not have Terraform yet, install it and configure the Yandex Cloud provider.

To manage infrastructure using Terraform under a service account or user accounts (a Yandex account, a federated account, or a local user), authenticate using the appropriate method.

To add a certificate to a device created using Terraform:

  1. In the configuration file, specify the properties of the resources you want to create:

    • yandex_iot_core_device: Device properties:

    Example device description in the Terraform configuration:

    resource "yandex_iot_core_device" "my_device" {
  registry_id = "<registry_ID>"
  name        = "<device_name>"
  description = "test device for terraform provider documentation"
...
  certificates = [
    file("<path_to_certificate_file>")
  ]
...
}

    For more information about yandex_iot_core_device properties, see this Terraform provider guide.

  2. In the command line, change to the folder where you edited the configuration file.

  3. Make sure the configuration file is correct using this command:

    terraform validate

    If the configuration is valid, you will get this message:

    Success! The configuration is valid.

  4. Run this command:

    terraform plan

    You will see a list of resources and their properties. No changes will be made at this step. Terraform will show any errors in the configuration.

  5. Apply the configuration changes:

    terraform apply

  6. Confirm the changes: type yes into the terminal and press Enter.

    You can verify device certificates in the management console or using this CLI command:

    yc iot device certificate list --device-name <device_name>

To add a certificate to a device, use the addCertificate REST API method for the Device resource or the DeviceService/AddCertificate gRPC API call.

Deleting a certificate

To delete a device certificate:

  1. In the management console, select the folder to delete the device certificate from.
  2. Navigate to IoT Core.
  3. Click the name of the registry.
  4. Navigate to Devices.
  5. Select the device from the list.
  6. On the Overview page, go to the Certificates section.
  7. In the line with the certificate, click and select Delete from the drop-down list.
  8. In the window that opens, click Delete.

If you do not have the Yandex Cloud CLI yet, install and initialize it.

  1. Delete a device certificate:

    yc iot device certificate delete --device-name my-device --fingerprint 65...

  2. Make sure the certificate was deleted:

    yc iot device certificate list --device-name my-device

    Result:

    +-------------+------------+
| FINGERPRINT | CREATED AT |
+-------------+------------+
+-------------+------------+

With Terraform, you can quickly create a cloud infrastructure in Yandex Cloud and manage it using configuration files. These files store the infrastructure description written in HashiCorp Configuration Language (HCL). If you change the configuration files, Terraform automatically detects which part of your configuration is already deployed, and what should be added or removed.

Terraform is distributed under the Business Source License. The Yandex Cloud provider for Terraform is distributed under the MPL-2.0 license.

For more information about the provider resources, see the relevant documentation on the Terraform website or its mirror.

If you do not have Terraform yet, install it and configure the Yandex Cloud provider.

To manage infrastructure using Terraform under a service account or user accounts (a Yandex account, a federated account, or a local user), authenticate using the appropriate method.

To delete the certificate of a device created using Terraform:

  1. Open the Terraform configuration file and delete the certificate value in the certificates section, in the device description fragment. To remove all certificates, delete the entire certificates section.

    Example device description in the Terraform configuration:

    resource "yandex_iot_core_device" "my_device" {
  registry_id = "<registry_ID>"
  name        = "<device_name>"
  description = "test device for terraform provider documentation"
...
  certificates = [
    file("<path_to_certificate_file>")
  ]
...
}

    For more information about yandex_iot_core_device properties, see this Terraform provider guide.

  2. In the command line, change to the folder where you edited the configuration file.

  3. Make sure the configuration file is correct using this command:

    terraform validate

    If the configuration is valid, you will get this message:

    Success! The configuration is valid.

  4. Run this command:

    terraform plan

    You will see a list of resources and their properties. No changes will be made at this step. Terraform will show any errors in the configuration.

  5. Apply the configuration changes:

    terraform apply

  6. Confirm the changes: type yes into the terminal and press Enter.

    You can verify device certificates in the management console or using this CLI command:

    yc iot device certificate list --device-name <device_name>

To delete a device certificate, use the deleteCertificate REST API method for the Device resource or the DeviceService/DeleteCertificate gRPC API call.

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