Adding support for dns_servers and ip_forwarding

CHANGELOG.md

@@ -174,7 +174,7 @@ IMPROVEMENTS:
 * `azurerm_app_service` - allow changing `client_affinity_enabled` without requiring a resource recreation ([#993](https://github.com/terraform-providers/terraform-provider-azurerm/issues/993))
 * `azurerm_app_service` - support for configuring `LocalSCM` source control ([#826](https://github.com/terraform-providers/terraform-provider-azurerm/issues/826))
 * `azurerm_app_service` - returning a clearer error message when the name (which needs to be globally unique) is in use ([#1037](https://github.com/terraform-providers/terraform-provider-azurerm/issues/1037))
-* `azurerm_cosmosdb_account` - increasing the maximum value for `max_interval_in_seconds` from 100s to 86400s (1 day) [[#1000](https://github.com/terraform-providers/terraform-provider-azurerm/issues/1000)] 
+* `azurerm_cosmosdb_account` - increasing the maximum value for `max_interval_in_seconds` from 100s to 86400s (1 day) [[#1000](https://github.com/terraform-providers/terraform-provider-azurerm/issues/1000)]
 * `azurerm_function_app` - returning a clearer error message when the name (which needs to be globally unique) is in use ([#1037](https://github.com/terraform-providers/terraform-provider-azurerm/issues/1037))
 * `azurerm_network_interface` - support for attaching to Application Gateways ([#1027](https://github.com/terraform-providers/terraform-provider-azurerm/issues/1027))
 * `azurerm_traffic_manager_endpoint` - adding support for `geo_mappings` ([#986](https://github.com/terraform-providers/terraform-provider-azurerm/issues/986))
@@ -352,4 +352,4 @@ IMPROVEMENTS:
 * core - Upgrading `Azure/azure-sdk-for-go` to v11.2.2-beta ([#594](https://github.com/terraform-providers/terraform-provider-azurerm/issues/594))
 * core - upgrading `Azure/go-autorest` to v9.5.2 ([#617](https://github.com/terraform-providers/terraform-provider-azurerm/issues/617))
 * core - skipping Resource Provider Registration in AutoRest when opted-out ([#630](https://github.com/terraform-providers/terraform-provider-azurerm/issues/630))
-* `azurerm_app_service` - exposing the Default Hostname as a Computed field 
+* `azurerm_app_service` - exposing the Default Hostname as a Computed field

azurerm/resource_arm_virtual_machine_scale_set.go

@@ -303,11 +303,32 @@ func resourceArmVirtualMachineScaleSet() *schema.Resource {
 							Optional: true,
 						},
 
+						"ip_forwarding": {
+							Type:     schema.TypeBool,
+							Optional: true,
+							Default:  false,
+						},
+
 						"network_security_group_id": {
 							Type:     schema.TypeString,
 							Optional: true,
 						},
 
+						"dns_settings": {
+							Type:     schema.TypeList,
+							Optional: true,
+							MaxItems: 1,
+							Elem: &schema.Resource{
+								Schema: map[string]*schema.Schema{
+									"dns_servers": {
+										Type:     schema.TypeList,
+										Required: true,
+										Elem:     &schema.Schema{Type: schema.TypeString},
+									},
+								},
+							},
+						},
+
 						"ip_configuration": {
 							Type:     schema.TypeList,
 							Required: true,
@@ -776,7 +797,6 @@ func resourceArmVirtualMachineScaleSetRead(d *schema.ResourceData, meta interfac
 		if upgradePolicy := properties.UpgradePolicy; upgradePolicy != nil {
 			d.Set("upgrade_policy_mode", upgradePolicy.Mode)
 		}
-
 		d.Set("overprovision", properties.Overprovision)
 		d.Set("single_placement_group", properties.SinglePlacementGroup)
 
@@ -1036,10 +1056,27 @@ func flattenAzureRmVirtualMachineScaleSetNetworkProfile(profile *compute.Virtual
 			s["accelerated_networking"] = *v
 		}
 
+		if v := netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.EnableIPForwarding; v != nil {
+			s["ip_forwarding"] = *v
+		}
+
 		if v := netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.NetworkSecurityGroup; v != nil {
 			s["network_security_group_id"] = *v.ID
 		}
 
+		if netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.DNSSettings != nil {
+			dnsSetting := make(map[string]interface{})
+			dnsServers := make([]string, 0, len(*netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.DNSSettings.DNSServers))
+			if netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.DNSSettings.DNSServers != nil {
+				for _, dnsServer := range *netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.DNSSettings.DNSServers {
+					dnsServers = append(dnsServers, dnsServer)
+				}
+				dnsSetting["dns_servers"] = dnsServers
+			}
+
+			s["dns_settings"] = []interface{}{dnsSetting}
+		}
+
 		if netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.IPConfigurations != nil {
 			ipConfigs := make([]map[string]interface{}, 0, len(*netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.IPConfigurations))
 			for _, ipConfig := range *netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.IPConfigurations {
@@ -1394,7 +1431,25 @@ func expandAzureRmVirtualMachineScaleSetNetworkProfile(d *schema.ResourceData) *
 		name := config["name"].(string)
 		primary := config["primary"].(bool)
 		acceleratedNetworking := config["accelerated_networking"].(bool)
-
+		ipForwarding := config["ip_forwarding"].(bool)
+
+		dnsSettingsConfigs := config["dns_settings"].([]interface{})
+		dnsSettings := compute.VirtualMachineScaleSetNetworkConfigurationDNSSettings{}
+		for _, dnsSettingsConfig := range dnsSettingsConfigs {
+			dns_settings := dnsSettingsConfig.(map[string]interface{})
+
+			if v := dns_settings["dns_servers"]; v != nil {
+				dns_servers := dns_settings["dns_servers"].([]interface{})
+				if len(dns_servers) > 0 {
+					var dnsServers []string
+					for _, v := range dns_servers {
+						str := v.(string)
+						dnsServers = append(dnsServers, str)
+					}
+					dnsSettings.DNSServers = &dnsServers
+				}
+			}
+		}
 		ipConfigurationConfigs := config["ip_configuration"].([]interface{})
 		ipConfigurations := make([]compute.VirtualMachineScaleSetIPConfiguration, 0, len(ipConfigurationConfigs))
 		for _, ipConfigConfig := range ipConfigurationConfigs {
@@ -1486,6 +1541,8 @@ func expandAzureRmVirtualMachineScaleSetNetworkProfile(d *schema.ResourceData) *
 				Primary:                     &primary,
 				IPConfigurations:            &ipConfigurations,
 				EnableAcceleratedNetworking: &acceleratedNetworking,
+				EnableIPForwarding:          &ipForwarding,
+				DNSSettings:                 &dnsSettings,
 			},
 		}