Managing device certificates

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Updated at May 13, 2025

Getting a list of certificates
Adding a certificate
Deleting a certificate

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

Management console

CLI

API

In the management console, select the folder where the device is located.
Select IoT Core.
Select the registry where the device is located.
Go to the Devices tab.
Select the device.
On the Overview page, go to the Certificates section.

If you do not have the Yandex Cloud (CLI) command line interface yet, install and initialize it.

The folder specified when creating the CLI profile is used by default. To change the default folder, use the yc config set folder-id <folder_ID> command. You can specify a different folder using the --folder-name or --folder-id parameter.

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

Management console

CLI

Terraform

API

To add a device certificate:

In the management console, select the folder to add the device certificate to.
Select IoT Core.
Click the name of the registry.
Go to Devices.
Select the device from the list.
On the Overview page, go to the Certificates section and click Add certificate.
- To add a file:
  1. Choose 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. Choose the Text method.
  2. Insert the certificate body in the Content field.
  3. Click Add.

If you do not have the Yandex Cloud (CLI) command line interface 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 documentation on the Terraform website or mirror website.

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

To add a certificate to a device created using Terraform:

In the configuration file, describe the parameters of the resources you want to create:
- yandex_iot_core_registry: Device properties:
  - registry_id: ID of the registry where the device will be created.
  - name: Device name.
  - description: Device description.
  - certificates: List of certificates for authorization using certificates.
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 the yandex_iot_core_device resource parameters in Terraform, see the relevant provider documentation.
In the command line, change to the folder where you edited the configuration file.
Make sure the configuration file is correct using this command:
```
terraform validate
```
If the configuration is correct, you will get this message:
```
Success! The configuration is valid.
```
Run this command:
```
terraform plan
```
The terminal will display a list of resources with parameters. No changes will be made at this step. If the configuration contains any errors, Terraform will point them out.
Apply the configuration changes:
```
terraform apply
```
Confirm the changes: type yes into the terminal and press Enter.

You can verify device certificates in the management console or using the following 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

Management console

CLI

Terraform

API

To delete a device certificate:

In the management console, select the folder to delete the device certificate from.
Select IoT Core.
Click the name of the registry.
Go to Devices.
Select the device from the list.
On the Overview page, go to the Certificates section.
In the line with the certificate, click and select Delete from the drop-down list.
In the window that opens, click Delete.

If you do not have the Yandex Cloud (CLI) command line interface yet, install and initialize it.

Delete a device certificate:

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

Make sure the certificate was deleted:

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

Result:

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

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 documentation on the Terraform website or mirror website.

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

To delete the certificate of a device created using Terraform:

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 the yandex_iot_core_device resource parameters in Terraform, see the relevant provider documentation.
In the command line, change to the folder where you edited the configuration file.
Make sure the configuration file is correct using this command:
```
terraform validate
```
If the configuration is correct, you will get this message:
```
Success! The configuration is valid.
```
Run this command:
```
terraform plan
```
The terminal will display a list of resources with parameters. No changes will be made at this step. If the configuration contains any errors, Terraform will point them out.
Apply the configuration changes:
```
terraform apply
```
Confirm the changes: type yes into the terminal and press Enter.

You can verify device certificates in the management console or using the following 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.

Managing device certificates

Getting a list of certificates

Adding a certificate

Deleting a certificate

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