Deleting a backend group

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Updated at October 17, 2024

Warning

If a backend group is used in at least one HTTP router or load balancer, you cannot delete it. First, you need to delete it from all HTTP routers and load balancers.

To delete a backend group:

Management console

CLI

Terraform

API

In the management console, select the folder where the backend group was created.
Select Application Load Balancer.
In the left-hand panel, select Backend groups.
Click next to the backend group name and select Delete.

To do this with multiple groups, select the groups to delete from the list and click Delete at the bottom of the screen.
In the window that opens, click Delete.

If you do not 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.

View the description of the CLI command to delete a backend group:
```
yc alb backend-group delete --help
```
Run the command, specifying the name of the backend group you want to delete:
```
yc alb backend-group delete --name <backend_group_name>
```
To check the deletion, get a list of backend groups by running the command:
```
yc alb backend-group list
```

Terraform allows you to quickly create a cloud infrastructure in Yandex Cloud and manage it using configuration files. Configuration files store the infrastructure description in the HashiCorp Configuration Language (HCL). Terraform and its providers are distributed under the Business Source License.

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

If you change the configuration files, Terraform automatically detects 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.

Open the Terraform configuration file and delete the fragment with the backend group description.

Sample backend group description in the Terraform configuration:

resource "yandex_alb_backend_group" "test-backend-group" {
  name                     = "<backend_group_name>"

  http_backend {
    name                   = "<backend_name>"
    weight                 = 1
    port                   = 80
    target_group_ids       = ["<target_group_ID>"]
    load_balancing_config {
      panic_threshold      = 90
    }    
    healthcheck {
      timeout              = "10s"
      interval             = "2s"
      healthy_threshold    = 10
      unhealthy_threshold  = 15
      http_healthcheck {
        path               = "/"
      }
    }
  }
}

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

Apply the changes:
1. In the terminal, change to the folder where you edited the configuration file.
2. Make sure the configuration file is correct using the command:
```
terraform validate
```
  If the configuration is correct, the following message is returned:
```
Success! The configuration is valid.
```
3. Run the command:
```
terraform plan
```
  The terminal will display a list of resources with parameters. No changes are made at this step. If the configuration contains errors, Terraform will point them out.
4. Apply the configuration changes:
```
terraform apply
```
5. Confirm the changes: type yes in the terminal and press Enter.
You can verify the changes to the backend group using the management console or the CLI command below:
```
yc alb backend-group list
```

Use the delete REST API method for the BackendGroup resource or the BackendGroupService/Delete gRPC API call.

Deleting a backend group

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