Getting information about an instance group

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.

1. View the description of the CLI command to get information about an instance group:

   yc compute instance-group get --help
   

2. Get a list of instance groups in the default folder:

   yc compute instance-group list
   

   Result:

   +----------------------+-----------------------+------+
   |          ID          |         NAME          | SIZE |
   +----------------------+-----------------------+------+
   | amc65sbgfqeq******** | first-instance-group  |    2 |
   +----------------------+-----------------------+------+
   

3. Select the instance group ID or NAME, e.g., first-instance-group.

4. Get information about the instance group:

   yc compute instance-group get --name first-instance-group
   

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.

To get information about an instance group using Terraform:

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

   data "yandex_compute_instance_group" "my_group" {
     instance_group_id = "<instance_group_ID>"
   }
   
   output "instancegroupvm_external_ip" {
     value = "${data.yandex_compute_instance_group.my_group.instances.*.network_interface.0.nat_ip_address}"
   }
   

   Where:

   • data "yandex_compute_instance_group": Description of the data source to get instance group information from:
     • instance_group_id: Instance group ID.
   • output "instancegroupvm_external_ip": List of all public IP addresses of the group's instances to output:
     • value: Returned value.

   For more information about the yandex_compute_instance_group data source parameters, see the provider documentation.

2. Create 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 the required resources and display the output variable values in the terminal. To check the results, run:

   terraform output instancegroupvm_external_ip
   

   Result:

   instancegroupvm_external_ip = tolist([
     "158.160.112.7",
     "158.160.2.119",
   ])
   

Use the get REST API method for the InstanceGroup resource or the InstanceGroupService/Get gRPC API call.

To request the list of available instance groups, use the listInstances REST API method or the InstanceGroupService/ListInstances gRPC API call.