Scaling a function

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.

To view a function's scaling settings, run the command:

yc serverless function list-scaling-policies --id=d4eokpuol55h********

Where --id is the function ID. To find out the ID, request a list of functions.

Result:

+----------------------+---------+----------------------+---------------------+
|     FUNCTION ID      |   TAG   | ZONE INSTANCES LIMIT | ZONE REQUESTS LIMIT |
+----------------------+---------+----------------------+---------------------+
| d4eokpuol55hmj15k7g1 | $latest |                    1 |                   2 |
+----------------------+---------+----------------------+---------------------+

You can view a function's scaling settings using the listScalingPolicies.

You can view function scaling settings using the Yandex Cloud Toolkit plugin for the IDE family on the IntelliJ platform from JetBrains.

To add scaling settings for a function, run the command:

	yc serverless function set-scaling-policy \
	  --id=d4eokpuol55h******** \
	  --tag=\$latest \
	  --zone-instances-limit=1 \
	  --zone-requests-limit=2

Where:

• --id: Function ID. To find out the ID, request a list of functions.
• --tag: Function version tag.
• --zone-instances-limit: Number of function instances.
• --zone-requests-limit: Number of calls-in-progress.

Result:

	function_id: d4eokpuol55h********
	tag: $latest
	zone_instances_limit: "1"
	zone_requests_limit: "2"

With Terraform, you can quickly create a cloud infrastructure in Yandex Cloud and manage it by configuration files. They store the infrastructure description in HashiCorp Configuration Language (HCL). Terraform and its providers are distributed under the Mozilla Public License.

For more information about the provider resources, see the documentation on the Terraform site or mirror site.

If you change the configuration files, Terraform automatically determines which part of your configuration is already deployed and what should be added or removed.

If you don't have Terraform, install it and configure the Yandex Cloud provider.

To add scaling settings:

1. In the configuration file, describe the parameters of resources that you want to create:

   • yandex_function_scaling_policy: Description of function scaling settings:
     • function_id: Function ID.
     • policy: Scaling settings:
       • policy.0.tag: Function version tag.
       • policy.0.zone_instances_limit: Number of function instances.
       • policy.0.zone_requests_limit: Number of calls in progress.

   Example configuration file structure:

   provider "yandex" {
       token     = "<service account OAuth or static key>"
       folder_id = "<folder ID>"
       zone      = "ru-central1-a"
   }
   
   	resource "yandex_function_scaling_policy" "my_scaling_policy" {
   		function_id = "are1samplefu********"
   		policy {
   			tag = "$latest"
   			zone_instances_limit = 2
   			zone_requests_limit  = 1
   	  	}
   	}
   

   For more information about the resources you can create using Terraform, see the provider documentation.

2. Make sure that the configuration files are correct.

   1. In the command line, go to the directory where you created the configuration file.
   2. Run the check using the command:

      terraform plan
      

   If the configuration is described correctly, the terminal displays a list of created resources and their parameters. If there are errors in the configuration, Terraform points them out.

3. Deploy the cloud resources.

   1. If the configuration doesn't contain any errors, run the command:

      terraform apply
      

   2. Confirm that you want to create the resources.

   Afterwards, all the necessary resources are created in the specified folder. You can check that the resources are there with the correct settings using the management console.

You can add scaling settings for a function using the setScalingPolicy.

You can add function scaling settings using the Yandex Cloud Toolkit plugin for the IDE family on the IntelliJ platform from JetBrains.

To delete a function's scaling settings, run the command:

	yc serverless function remove-scaling-policy \
	  --id=d4eokpuol55h******** \
	  --tag=\$latest

Where:

• --id: Function ID. To find out the ID, request a list of functions.
• --tag: Function version tag.

You can delete scaling settings for a function using the removeScalingPolicy.

You can delete function scaling settings using the Yandex Cloud Toolkit plugin for the IDE family on the IntelliJ platform from JetBrains.