Setting up a canary release

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.

To set up a canary release:

1. If necessary, edit the OpenAPI specification file or create a new one.

2. View a description of the CLI command for updating an API gateway:

   yc serverless api-gateway update --help
   

3. Specify the API gateway ID or name and the canary release parameters in the command below:

   yc serverless api-gateway update \
     --id <API_gateway_ID> \
     --canary-weight <percentage_of_requests> \
     --canary-variables=<list_of_variables>
   

   Where:

   • --canary-weight: Percentage of requests to be processed by the canary release.
   • --canary-variables: Variables for the canary release, listed as key=value.

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 set up a canary release:

1. Open the Terraform configuration file and add the canary section to it:

   resource "yandex_api_gateway" "<API_gateway_name>" {
   ...
   canary {
     weight    = <percentage_of_requests>
     variables = {
       <list_of_variables>
     }
   }
   

   Where:

   • weight: Percentage of requests to be processed by the canary release.
   • variables: Variables for the canary release, listed as key=value.

   For more information about the yandex_api_gateway resource parameters in Terraform, see the provider documentation.

2. Check the configuration 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
   

   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.

4. Apply the configuration changes:

   terraform apply
   

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

You can check the API gateway update using the management console or this CLI command:

yc serverless api-gateway get <API_gateway_name>

To set up a canary release, use the update REST API method for the ApiGateway resource or the ApiGatewayService/Update gRPC API call.