Added Dedicated Host ID field to aws_instance resource

aws/data_source_aws_instance.go

@@ -51,6 +51,10 @@ func dataSourceAwsInstance() *schema.Resource {
 				Type:     schema.TypeString,
 				Computed: true,
 			},
+			"host_id": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
 			"key_name": {
 				Type:     schema.TypeString,
 				Computed: true,
@@ -349,6 +353,9 @@ func instanceDescriptionAttributes(d *schema.ResourceData, instance *ec2.Instanc
 	if instance.Placement.Tenancy != nil {
 		d.Set("tenancy", instance.Placement.Tenancy)
 	}
+	if instance.Placement.HostId != nil {
+		d.Set("host_id", instance.Placement.HostId)
+	}
 	d.Set("ami", instance.ImageId)
 	d.Set("instance_type", instance.InstanceType)
 	d.Set("key_name", instance.KeyName)

aws/resource_aws_instance.go

@@ -287,7 +287,12 @@ func resourceAwsInstance() *schema.Resource {
 				Computed: true,
 				ForceNew: true,
 			},
-
+			"host_id": {
+				Type:     schema.TypeString,
+				Optional: true,
+				Computed: true,
+				ForceNew: true,
+			},
 			"cpu_core_count": {
 				Type:     schema.TypeInt,
 				Optional: true,
@@ -708,6 +713,9 @@ func resourceAwsInstanceRead(d *schema.ResourceData, meta interface{}) error {
 	if instance.Placement.Tenancy != nil {
 		d.Set("tenancy", instance.Placement.Tenancy)
 	}
+	if instance.Placement.HostId != nil {
+		d.Set("host_id", instance.Placement.HostId)
+	}
 
 	if instance.CpuOptions != nil {
 		d.Set("cpu_core_count", instance.CpuOptions.CoreCount)
@@ -1821,6 +1829,9 @@ func buildAwsInstanceOpts(
 	if v := d.Get("tenancy").(string); v != "" {
 		opts.Placement.Tenancy = aws.String(v)
 	}
+	if v := d.Get("host_id").(string); v != "" {
+		opts.Placement.HostId = aws.String(v)
+	}
 
 	if v := d.Get("cpu_core_count").(int); v > 0 {
 		tc := d.Get("cpu_threads_per_core").(int)

aws/resource_aws_instance_test.go

@@ -2092,6 +2092,22 @@ func TestInstanceTenancySchema(t *testing.T) {
 	}
 }
 
+func TestInstanceHostIDSchema(t *testing.T) {
+	actualSchema := resourceAwsInstance().Schema["host_id"]
+	expectedSchema := &schema.Schema{
+		Type:     schema.TypeString,
+		Optional: true,
+		Computed: true,
+		ForceNew: true,
+	}
+	if !reflect.DeepEqual(actualSchema, expectedSchema) {
+		t.Fatalf(
+			"Got:\n\n%#v\n\nExpected:\n\n%#v\n",
+			actualSchema,
+			expectedSchema)
+	}
+}
+
 func TestInstanceCpuCoreCountSchema(t *testing.T) {
 	actualSchema := resourceAwsInstance().Schema["cpu_core_count"]
 	expectedSchema := &schema.Schema{

website/docs/d/instance.html.markdown

@@ -102,6 +102,7 @@ interpolation.
 * `user_data` - The User Data supplied to the Instance.
 * `tags` - A mapping of tags assigned to the Instance.
 * `tenancy` - The tenancy of the instance: `dedicated`, `default`, `host`.
+* `host_id` - The Id of the dedicated host the instance will be assigned to.
 * `vpc_security_group_ids` - The associated security groups in a non-default VPC.
 * `credit_specification` - The credit specification of the Instance.
 

website/docs/r/instance.html.markdown

@@ -54,6 +54,7 @@ The following arguments are supported:
 * `availability_zone` - (Optional) The AZ to start the instance in.
 * `placement_group` - (Optional) The Placement Group to start the instance in.
 * `tenancy` - (Optional) The tenancy of the instance (if the instance is running in a VPC). An instance with a tenancy of dedicated runs on single-tenant hardware. The host tenancy is not supported for the import-instance command.
+* `host_id` - (optional) The Id of a dedicated host that the instance will be assigned to. Use when an instance is to be launched on a specific dedicated host.
 * `cpu_core_count` - (Optional) Sets the number of CPU cores for an instance. This option is 
   only supported on creation of instance type that support CPU Options 
   [CPU Cores and Threads Per CPU Core Per Instance Type](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-optimize-cpu.html#cpu-options-supported-instances-values) - specifying this option for unsupported instance types will return an error from the EC2 API.