Using Yandex Cloud from within a VM

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

By default, the CLI uses the folder specified when creating the profile. To change the default folder, use the yc config set folder-id <folder_ID> command. You can also set a different folder for any specific command using the --folder-name or --folder-id parameter.

Update the VM parameters by specifying the service account using --service-account-name or --service-account-id:

yc compute instance update my-instance --service-account-name test

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.

1. Open the Terraform configuration file with the description of the VM you want to link the service account to. See an example of the VM configuration file.

2. In the section with the yandex_compute_instance resource description, add the service_account_id parameter and specify the service account ID:

   resource "yandex_compute_instance" "vm-1" {
     ...
     service_account_id = "<service_account_ID>"
     ...
   }
   

3. Apply the changes:

   1. In the terminal, go to the directory where you edited the configuration file.

   2. 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.
      

   3. Run this command:

      terraform plan
      

      You will see a detailed list of resources. No changes will be made at this step. If the configuration contains any errors, Terraform will show them.

   4. Apply the changes:

      terraform apply
      

   5. Type yes and press Enter to confirm the changes.

   Terraform will change all required resources. You can check the new resources using the management console.

For more information about yandex_compute_instance properties, see this Terraform article.

Use the update REST API method for the Instance resource or the InstanceService/Update gRPC API call. Specify the service account ID in your request.

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

By default, the CLI uses the folder specified when creating the profile. To change the default folder, use the yc config set folder-id <folder_ID> command. You can also set a different folder for any specific command using the --folder-name or --folder-id parameter.

Create a VM by specifying the service account using --service-account-name or --service-account-id:

yc compute instance create \
  --name my-instance \
  --network-interface subnet-name=default,nat-ip-version=ipv4 \
  --ssh-key ~/.ssh/id_ed25519.pub \
  --service-account-name my-robot

1. Open the Terraform configuration file with the description of the VM you want to link the service account to. See an example of the VM configuration file.

2. In the section with the yandex_compute_instance resource description, add the service_account_id parameter and specify the service account ID:

   resource "yandex_compute_instance" "vm-1" {
     ...
     service_account_id = "<service_account_ID>"
     ...
   }
   

3. Create the resources:

   1. In the terminal, go to the directory where you edited the configuration file.

   2. 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.
      

   3. Run this command:

      terraform plan
      

      You will see a detailed list of resources. No changes will be made at this step. If the configuration contains any errors, Terraform will show them.

   4. Apply the changes:

      terraform apply
      

   5. Type yes and press Enter to confirm the changes.

   Terraform will create all the required resources. You can check the new resources using the management console.

For more information about yandex_compute_instance properties, see this Terraform article.

Use the create REST API method for the Instance resource or the InstanceService/Create gRPC API call. Specify the service account ID in your request.

1. Connect to the VM over SSH.

2. Get an IAM token from metadata in Google Compute Engine format:

   curl \
     --header Metadata-Flavor:Google http://169.254.169.254/computeMetadata/v1/instance/service-accounts/default/token
   

   Result:

   {"access_token":"CggVAgAAA...","expires_in":39944,"token_type":"Bearer"}
   

   The response will return an IAM token in the access_token field. The remaining lifetime of the IAM token is specified in the expires_in field.

3. Specify the received IAM token when accessing Yandex Cloud resources via the API. Provide the IAM token in the Authorization header in the following format:

   Authorization: Bearer <IAM_token>
   

Keep track of the IAM token lifetime or request a new token more often, e.g., every hour.