feat(r/aws_autoscaling_group): add max_healthy_percentage arg

.changelog/34929.txt

@@ -0,0 +1,4 @@
+```release-note:enhancement
+resource/aws_autoscaling_group: Add `max_healthy_percentage` attribute to instance_refresh.preferences configuration block
+```
+

internal/service/autoscaling/group.go

@@ -250,6 +250,12 @@ func ResourceGroup() *schema.Resource {
 										Optional:     true,
 										ValidateFunc: nullable.ValidateTypeStringNullableIntAtLeast(0),
 									},
+									"max_healthy_percentage": {
+										Type:         schema.TypeInt,
+										Optional:     true,
+										Default:      100,
+										ValidateFunc: validation.IntBetween(100, 200),
+									},
 									"min_healthy_percentage": {
 										Type:         schema.TypeInt,
 										Optional:     true,

internal/service/autoscaling/group_test.go

@@ -1388,6 +1388,24 @@ func TestAccAutoScalingGroup_InstanceRefresh_basic(t *testing.T) {
 					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.triggers.#", "0"),
 				),
 			},
+			{
+				Config: testAccGroupConfig_instanceRefreshMaxHealthyPercentage(rName),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckGroupExists(ctx, resourceName, &group),
+					resource.TestCheckResourceAttr(resourceName, "instance_refresh.#", "1"),
+					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.#", "1"),
+					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.auto_rollback", "false"),
+					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.checkpoint_delay", ""),
+					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.checkpoint_percentages.#", "0"),
+					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.instance_warmup", ""),
+					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.max_healthy_percentage", "150"),
+					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.scale_in_protected_instances", "Ignore"),
+					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.skip_matching", "false"),
+					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.standby_instances", "Ignore"),
+					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.strategy", "Rolling"),
+					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.triggers.#", "0"),
+				),
+			},
 			{
 				Config: testAccGroupConfig_instanceRefreshMinHealthyPercentage(rName),
 				Check: resource.ComposeTestCheckFunc(
@@ -1475,6 +1493,7 @@ func TestAccAutoScalingGroup_InstanceRefresh_basic(t *testing.T) {
 					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.checkpoint_percentages.3", "50"),
 					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.checkpoint_percentages.4", "100"),
 					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.instance_warmup", "10"),
+					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.max_healthy_percentage", "150"),
 					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.min_healthy_percentage", "50"),
 					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.scale_in_protected_instances", "Refresh"),
 					resource.TestCheckResourceAttr(resourceName, "instance_refresh.0.preferences.0.skip_matching", "false"),
@@ -5077,6 +5096,33 @@ resource "aws_autoscaling_group" "test" {
 `, rName))
 }
 
+func testAccGroupConfig_instanceRefreshMaxHealthyPercentage(rName string) string {
+	return acctest.ConfigCompose(testAccGroupConfig_launchConfigurationBase(rName, "t3.nano"), fmt.Sprintf(`
+resource "aws_autoscaling_group" "test" {
+  availability_zones   = [data.aws_availability_zones.available.names[0]]
+  name                 = %[1]q
+  max_size             = 2
+  min_size             = 1
+  desired_capacity     = 1
+  launch_configuration = aws_launch_configuration.test.name
+
+  instance_refresh {
+    strategy = "Rolling"
+
+    preferences {
+      max_healthy_percentage = 150
+    }
+  }
+
+  tag {
+    key                 = "Name"
+    value               = %[1]q
+    propagate_at_launch = true
+  }
+}
+`, rName))
+}
+
 func testAccGroupConfig_instanceRefreshMinHealthyPercentage(rName string) string {
 	return acctest.ConfigCompose(testAccGroupConfig_launchConfigurationBase(rName, "t3.nano"), fmt.Sprintf(`
 resource "aws_autoscaling_group" "test" {
@@ -5235,6 +5281,7 @@ resource "aws_autoscaling_group" "test" {
 
     preferences {
       instance_warmup        = 10
+      max_healthy_percentage = 150
       min_healthy_percentage = 50
       checkpoint_delay       = 25
       checkpoint_percentages = [1, 20, 25, 50, 100]

website/docs/r/autoscaling_group.html.markdown

@@ -662,6 +662,7 @@ This configuration block supports the following:
     - `checkpoint_delay` - (Optional) Number of seconds to wait after a checkpoint. Defaults to `3600`.
     - `checkpoint_percentages` - (Optional) List of percentages for each checkpoint. Values must be unique and in ascending order. To replace all instances, the final number must be `100`.
     - `instance_warmup` - (Optional) Number of seconds until a newly launched instance is configured and ready to use. Default behavior is to use the Auto Scaling Group's health check grace period.
+    - `max_healthy_percentage` - (Optional) Amount of capacity in the Auto Scaling group that can be in service and healthy, or pending, to support your workload when an instance refresh is in place, as a percentage of the desired capacity of the Auto Scaling group. Values must be between `100` and `200`, defaults to `100`.
     - `min_healthy_percentage` - (Optional) Amount of capacity in the Auto Scaling group that must remain healthy during an instance refresh to allow the operation to continue, as a percentage of the desired capacity of the Auto Scaling group. Defaults to `90`.
     - `skip_matching` - (Optional) Replace instances that already have your desired configuration. Defaults to `false`.
     - `auto_rollback` - (Optional) Automatically rollback if instance refresh fails. Defaults to `false`. This option may only be set to `true` when specifying a `launch_template` or `mixed_instances_policy`.