container_node_pool : add gvnic support

.changelog/5789.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+container: add support for gvnic to `google_container_node_pool`
+```

google/node_config.go

@@ -123,6 +123,24 @@ func schemaNodeConfig() *schema.Schema {
 					},
 				},
 
+				"gvnic": {
+					Type:        schema.TypeList,
+					Optional:    true,
+					MaxItems:    1,
+					Description: `Enable or disable gvnic in the node pool.`,
+					ForceNew:    true,
+					Elem: &schema.Resource{
+						Schema: map[string]*schema.Schema{
+							"enabled": {
+								Type:        schema.TypeBool,
+								Required:    true,
+								ForceNew:    true,
+								Description: `Whether or not gvnic is enabled`,
+							},
+						},
+					},
+				},
+
 				"machine_type": {
 					Type:        schema.TypeString,
 					Optional:    true,
@@ -336,6 +354,13 @@ func expandNodeConfig(v interface{}) *container.NodeConfig {
 		}
 	}
 
+	if v, ok := nodeConfig["gvnic"]; ok && len(v.([]interface{})) > 0 {
+		conf := v.([]interface{})[0].(map[string]interface{})
+		nc.Gvnic = &container.VirtualNIC{
+			Enabled: conf["enabled"].(bool),
+		}
+	}
+
 	if scopes, ok := nodeConfig["oauth_scopes"]; ok {
 		scopesSet := scopes.(*schema.Set)
 		scopes := make([]string, scopesSet.Len())
@@ -459,6 +484,7 @@ func flattenNodeConfig(c *container.NodeConfig) []map[string]interface{} {
 		"guest_accelerator":        flattenContainerGuestAccelerators(c.Accelerators),
 		"local_ssd_count":          c.LocalSsdCount,
 		"gcfs_config":              flattenGcfsConfig(c.GcfsConfig),
+		"gvnic":                    flattenGvnic(c.Gvnic),
 		"service_account":          c.ServiceAccount,
 		"metadata":                 c.Metadata,
 		"image_type":               c.ImageType,
@@ -513,6 +539,16 @@ func flattenGcfsConfig(c *container.GcfsConfig) []map[string]interface{} {
 	return result
 }
 
+func flattenGvnic(c *container.VirtualNIC) []map[string]interface{} {
+	result := []map[string]interface{}{}
+	if c != nil {
+		result = append(result, map[string]interface{}{
+			"enabled": c.Enabled,
+		})
+	}
+	return result
+}
+
 func flattenTaints(c []*container.NodeTaint) []map[string]interface{} {
 	result := []map[string]interface{}{}
 	for _, taint := range c {

google/resource_container_node_pool_test.go

@@ -714,6 +714,55 @@ resource "google_container_node_pool" "np" {
 `, cluster, np)
 }
 
+func TestAccContainerNodePool_gvnic(t *testing.T) {
+	t.Parallel()
+
+	cluster := fmt.Sprintf("tf-test-cluster-%s", randString(t, 10))
+	np := fmt.Sprintf("tf-test-nodepool-%s", randString(t, 10))
+
+	vcrTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckContainerNodePoolDestroyProducer(t),
+		Steps: []resource.TestStep{
+			{
+				Config: testAccContainerNodePool_gvnic(cluster, np),
+			},
+			{
+				ResourceName:      "google_container_node_pool.np",
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
+		},
+	})
+}
+
+func testAccContainerNodePool_gvnic(cluster, np string) string {
+	return fmt.Sprintf(`
+resource "google_container_cluster" "cluster" {
+  name               = "%s"
+  location           = "us-central1-a"
+  initial_node_count = 1
+  min_master_version = "1.19"
+}
+
+resource "google_container_node_pool" "np" {
+  name               = "%s"
+  location           = "us-central1-a"
+  cluster            = google_container_cluster.cluster.name
+  initial_node_count = 1
+
+  node_config {
+    machine_type = "n1-standard-8"
+    image_type = "COS_CONTAINERD"
+    gvnic {
+      enabled = true
+    }
+  }
+}
+`, cluster, np)
+}
+
 func testAccCheckContainerNodePoolDestroyProducer(t *testing.T) func(s *terraform.State) error {
 	return func(s *terraform.State) error {
 		config := googleProviderConfig(t)

website/docs/r/container_cluster.html.markdown

@@ -367,7 +367,7 @@ subnetwork in which the cluster's instances are launched.
     It can only be disabled if the nodes already do not have network policies enabled.
     Defaults to disabled; set `disabled = false` to enable.
 
-* `gcp_filestore_csi_driver_config` - (Optional) The status of the Filestore CSI driver addon, 
+* `gcp_filestore_csi_driver_config` - (Optional) The status of the Filestore CSI driver addon,
     which allows the usage of filestore instance as volumes.
     It is disabled by default; set `enabled = true` to enable.
 
@@ -649,6 +649,20 @@ gcfs_config {
 }
 ```
 
+
+* `gvnic` - (Optional) Google Virtual NIC (gVNIC) is a virtual network interface.
+    Installing the gVNIC driver allows for more efficient traffic transmission across the Google network infrastructure.
+    gVNIC is an alternative to the virtIO-based ethernet driver. GKE nodes must use a Container-Optimized OS node image.
+    GKE node version 1.15.11-gke.15 or later
+    Structure is [documented below](#nested_gvnic).
+
+
+```hcl
+gvnic {
+  enabled = true
+}
+```
+
 * `guest_accelerator` - (Optional) List of the type and count of accelerator cards attached to the instance.
     Structure [documented below](#nested_guest_accelerator).
     To support removal of guest_accelerators in Terraform 0.12 this field is an
@@ -762,6 +776,10 @@ linux_node_config {
 
 * `enabled` (Required) - Whether or not the Google Container Filesystem (GCFS) is enabled
 
+<a name="nested_gvnic"></a>The `gvnic` block supports:
+
+* `enabled` (Required) - Whether or not the Google Virtual NIC (gVNIC) is enabled
+
 <a name="nested_guest_accelerator"></a>The `guest_accelerator` block supports:
 
 * `type` (Required) - The accelerator type resource to expose to this instance. E.g. `nvidia-tesla-k80`.

website/docs/r/container_node_pool.html.markdown

@@ -148,7 +148,7 @@ cluster.
     with the specified prefix. Conflicts with `name`.
 
 * `node_config` - (Optional) Parameters used in creating the node pool. See
-    [google_container_cluster](container_cluster.html) for schema.
+    [google_container_cluster](container_cluster.html#nested_node_config) for schema.
 
 * `network_config` - (Optional) The network configuration of the pool. See
     [google_container_cluster](container_cluster.html) for schema.