resource "azurerm_linux_virtual_machine_scale_set" "linux_nvavss" {
  name                            = "test"
  location                        = azurerm_resource_group.main.location
  resource_group_name             = azurerm_resource_group.main.name
  computer_name_prefix            = "dapzhang"
  admin_username                  = "dapzhang"
  admin_password                  = "Passw0rd123!"
  disable_password_authentication = false
  instances                       = 2

  # automatic rolling upgrade
  upgrade_mode = "Manual"
  sku          = "Standard_F2"
 
  zones        = []
  
  source_image_reference {
    publisher = "Canonical"
    offer     = "UbuntuServer"
    sku       = "16.04-LTS"
    version   = "latest"
  }
 
  os_disk {
    caching              = "ReadWrite"
    storage_account_type = "Standard_LRS"
  }
 
  network_interface {
    name                          = "eth0"
    primary                       = true
    enable_accelerated_networking = true
    enable_ip_forwarding          = false
    ip_configuration {
      name                                   = "ipconfig1"
      primary                                = true
      subnet_id                              = azurerm_subnet.front.id
      load_balancer_backend_address_pool_ids = [azurerm_lb_backend_address_pool.test.id]
      public_ip_address {
        name                    = "instancePublicIP"
        idle_timeout_in_minutes = 30
        domain_name_label       = "testdomain"
        public_ip_prefix_id     = azurerm_public_ip_prefix.test.id
      }
    }
  }
}

   "properties": {
        "upgradePolicy": {
            "mode": "Manual"
        },
        "virtualMachineProfile": {
            "networkProfile": {
                "networkInterfaceConfigurations": [
                    {
                        "name": "eth0",
                        "properties": {
                            "primary": true,
                            "enableAcceleratedNetworking": true,
                            "dnsSettings": {
                                "dnsServers": []
                            },
                            "ipConfigurations": [
                                {
                                    "name": "ipconfig1",
                                    "properties": {
                                        "subnet": {
                                            "id": "/subscriptions/85b3dbca-0000-0000-0000-67a141095a76/resourceGroups/test/providers/Microsoft.Network/virtualNetworks/network/subnets/front"
                                        },
                                        "primary": true,
                                        "publicIPAddressConfiguration": {
                                            "name": "instancePublicIP",
                                            "properties": {
                                                "idleTimeoutInMinutes": 30,
                                                "dnsSettings": {
                                                    "domainNameLabel": "testdomain"
                                                }
                                            }
                                        },
                                        "privateIPAddressVersion": "IPv4",
                                        "applicationGatewayBackendAddressPools": [],
                                        "applicationSecurityGroups": [],
                                        "loadBalancerBackendAddressPools": [
                                            {
                                                "id": "/subscriptions/85b3dbca-0000-0000-0000-67a141095a76/resourceGroups/test/providers/Microsoft.Network/loadBalancers/acctestlb-001/backendAddressPools/test"
                                            }
                                        ],
                                        "loadBalancerInboundNatPools": []
                                    }
                                }
                            ],
                            "enableIPForwarding": false
                        }
                    }
                ]
            }
        }
    },
    "sku": {
        "name": "Standard_D3_v2",
        "tier": "Standard",
        "capacity": 2
    }
}