Assigning a public IP address to a VM

If you do not have the Yandex Cloud CLI installed yet, install and initialize it.

By default, the CLI uses the folder specified when creating the profile. To change the default folder, use the yc config set folder-id <folder_ID> command. You can also set a different folder for any specific command using the --folder-name or --folder-id parameter.

To assign a public IP address to a VM, run the following CLI command:

yc compute instance add-one-to-one-nat \
  --id=<VM_ID> \
  --network-interface-index=<VM_network_interface_number> \
  --nat-address=<IP_address>

Where:

• --id: VM ID. You can get a list of available VM IDs in the folder using the yc compute instance list CLI command.

• --network-interface-index: VM network interface number. The default value is 0. To get a list of VM network interfaces and their numbers, run yc compute instance get <VM_ID>.

• --nat-address: Public IP address to assign to the VM. This is an optional setting. If you skip it, the VM will get a public IP address automatically.

  You can get a list of reserved public IP addresses available in the folder using the yc vpc address list CLI command. The IP address and the VM must be in the same availability zone.

Here is a possible use case:

yc compute instance add-one-to-one-nat \
  --id=fhmsbag62taf******** \
  --network-interface-index=0 \
  --nat-address=51.250.*.***

Result:

id: fhmsbag62taf********
folder_id: b1gv87ssvu49********
created_at: "2022-05-06T10:41:56Z"
...
network_settings:
  type: STANDARD
placement_policy: {}

For more information about the yc compute instance add-one-to-one-nat command, see the CLI reference.

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 relevant documentation on the Terraform website or its mirror.

If you do not have Terraform yet, install it and configure the Yandex Cloud provider.

1. To create a public IP address and link it to a VM network interface, use the yandex_vpc_address resource and specify the address you get in the nat_ip_address field under network_interface for the network interface in question in the yandex_compute_instance resource configuration:

   # Creating a static IP address
   
   resource "yandex_vpc_address" "addr" {
     name = "vm-adress"
     external_ipv4_address {
       zone_id = "<availability_zone>"
     }
   }
   
   # Creating a VM
   
   resource "yandex_compute_instance" "vm-1" {
     name        = "<VM_name>"
     platform_id = "standard-v3"
     resources {
       core_fraction = 20
       cores         = 2
       memory        = 1
     }
     ...
   
     ## Assigning a subnet and IP address to the VM network interface under `network_interface`
   
     network_interface {
       subnet_id      = "<VM_subnet_ID>"
       nat            = true
       nat_ip_address = yandex_vpc_address.addr.external_ipv4_address[0].address
     }
     ...
   
   }
   

   Where nat_ip_address is the public IP address to assign to the VM network interface. The yandex_vpc_address resource contains a list of items, where [0] is the list's first item that contains the IP address. If you already have a reserved public IP address to assign to your VM, specify it in the nat_ip_address field:

   nat_ip_address = "<IP_address>"
   

   The IP address and the VM must be in the same availability zone.

   For more information about yandex_compute_instance properties, see this Terraform article.

2. Create the resources:

   1. In the terminal, go to the directory where you edited the configuration file.

   2. Make sure the configuration file is correct using this command:

      terraform validate
      

      If the configuration is correct, you will get this message:

      Success! The configuration is valid.
      

   3. Run this command:

      terraform plan
      

      You will see a detailed list of resources. No changes will be made at this step. If the configuration contains any errors, Terraform will show them.

   4. Apply the changes:

      terraform apply
      

   5. Type yes and press Enter to confirm the changes.

   Terraform will create all the required resources. You can check the new resources in the management console.

To assign a public IP address to a VM network interface, use the addOneToOneNat REST API method for the Instance resource or the InstanceService/AddOneToOneNat gRPC API call.