Getting information about an L7 load balancer

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.

1. See the description of the CLI command for getting information about an L7 load balancer:

   yc alb load-balancer get --help
   

2. To get your load balancer details, run this command with its name or ID specified:

   yc alb load-balancer get <load_balancer_name>
   

   Result:

   id: a5d88ep483cm********
   name: test-balancer2
   folder_id: aoe197919j8e********
   status: ACTIVE
   region_id: ru-central1
   network_id: c64l1c06d151********
   allocation_policy:
     locations:
     - zone_id: ru-central1-a
       subnet_id: buc4gsmpj8hv********
   log_group_id: eolul9ap0bv0********
   created_at: "2021-04-26T12:12:13.624832586Z"
   log_options:
     log_group_id: e23ujjda632o********
   

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 get information about an L7 load balancer using Terraform:

1. Add the data and output sections to the Terraform configuration file:

   data "yandex_alb_load_balancer" "tf-alb" {
     load_balancer_id = "<load_balancer_ID>"
   }
   
   output "tf-alb-listener" {
     value = data.yandex_alb_load_balancer.tf-alb.allocation_policy
   }
   

   Where:

   • data "yandex_alb_load_balancer": Description of the L7 load balancer as a data source:
     • load_balancer_id: L7 load balancer ID.
   • output "allocation_policy": Output variable with L7 load balancer placement policy information:
     • value: Return value.

   You can replace allocation_policy with another variable to get the information you need. For more information about the yandex_alb_load_balancer data source variables, see the relevant provider documentation.

2. Create the resources:

   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.

   Terraform will create all required resources and display their output variables in the terminal. To check the results, run this command:

   terraform output
   

   Result:

   tf-alb-listener = tolist([
     {
       "location" = toset([
         {
           "disable_traffic" = false
           "subnet_id" = "buc4gsmpj8hv********"
           "zone_id" = "ru-central1-a"
         },
         ...
   

To get L7 load balancer details, use the get REST API method for the LoadBalancer resource or the LoadBalancerService/Get gRPC API call.