Create a target group

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Yandex Cloud

Create VMs in the working folder by following the instructions.

To create a target group:

Management console

CLI

Terraform

In the management console, select the folder to create your target group in.
In the list of services, select Application Load Balancer.
On the left-hand panel, select Target groups.
Click Create target group.
Enter a name for the target group: test-target-group.
Select the VMs.
Click Create.

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.

See the description of the CLI's create target group command:
```
yc alb target-group create --help
```

Run the command, specifying the subnet name and the internal IP addresses of the VMs in the parameters:

yc alb target-group create <target group name> \
  --target subnet-name=<subnet name>,ip-address=<internal IP address of VM 1> \
  --target subnet-name=<subnet name>,ip-address=<internal IP address of VM 2> \
  --target subnet-name=<subnet name>,ip-address=<internal IP address of VM 3>

Result:

id: a5d751meibht4ev264pp
name: test-target-group
folder_id: aoerb349v3h4bupphtaf
targets:
- ip_address: 10.0.0.36
  subnet_id: bucp2nunecvqgobf7cve
- ip_address: 10.1.0.8
  subnet_id: bltca464785h2eon18r9
- ip_address: 10.2.0.12
  subnet_id: fo2tgfikh3hergif27iu

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.

For more information about Terraform, see the documentation.

In the Terraform configuration file, describe the parameters of the resource to create:
```
resource "yandex_alb_target_group" "foo" {
  name           = "<target group name>"

  target {
    subnet_id    = "<subnet ID>"
    ip_address   = "<internal IP address of VM 1>"
  }

  target {
    subnet_id    = "<subnet ID>"
    ip_address   = "<internal IP address of VM 2>"
  }

  target {
    subnet_id    = "<subnet ID>"
    ip_address   = "<internal IP address of VM 3>"
  }
}
```
Where:
- yandex_alb_target_group specifies the target group parameters:
  - name: Target group name.
  - target: Target parameters:
    - subnet_id: ID of the subnet hosting the VM. You can get a list of available subnets using the CLI command: yc vpc subnet list.
    - ip_address: VM's internal IP. You can get a list of internal IP addresses using the CLI command: yc vpc subnet list-used-addresses --id <subnet ID>.
For more information about the yandex_alb_target_group resource parameters, see the Terraform provider documentation.
Create resources:
1. In the command line, go to the directory with the Terraform configuration file.
2. Check the configuration 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 there are errors in the configuration, Terraform points them out.
4. Apply the configuration changes:
```
terraform apply
```
5. Confirm the changes: type yes into the terminal and press Enter.
Terraform creates all the required resources. You can check that the resources are there using the management console or the CLI command below:
```
yc alb target-group list
```

Create a target group

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