feat: add support for availability_zone_rebalancing in aws_ecs_service resource

README.md

@@ -271,7 +271,7 @@ Available targets:
 | <a name="input_alb_security_group"></a> [alb\_security\_group](#input\_alb\_security\_group) | Security group of the ALB | `string` | `""` | no |
 | <a name="input_assign_public_ip"></a> [assign\_public\_ip](#input\_assign\_public\_ip) | Assign a public IP address to the ENI (Fargate launch type only). Valid values are `true` or `false`. Default `false` | `bool` | `false` | no |
 | <a name="input_attributes"></a> [attributes](#input\_attributes) | ID element. Additional attributes (e.g. `workers` or `cluster`) to add to `id`,<br/>in the order they appear in the list. New attributes are appended to the<br/>end of the list. The elements of the list are joined by the `delimiter`<br/>and treated as a single ID element. | `list(string)` | `[]` | no |
-| <a name="input_availability_zone_rebalancing"></a> [availability\_zone\_rebalancing](#input\_availability\_zone\_rebalancing) | ECS automatically redistributes tasks within a service across Availability Zones (AZs) to mitigate the risk of impaired application availability due to underlying infrastructure failures and task lifecycle activities. The valid values are `ENABLED` and `DISABLED`. | `string` | `null` | no |
+| <a name="input_availability_zone_rebalancing"></a> [availability\_zone\_rebalancing](#input\_availability\_zone\_rebalancing) | ECS automatically redistributes tasks within a service across Availability Zones (AZs) to mitigate the risk of impaired application availability due to underlying infrastructure failures and task lifecycle activities. The valid values are `ENABLED` and `DISABLED`. | `string` | `"DISABLED"` | no |
 | <a name="input_bind_mount_volumes"></a> [bind\_mount\_volumes](#input\_bind\_mount\_volumes) | Task bind mount volume definitions as list of configuration objects. You can define multiple bind mount volumes on the same task definition. Requires `name` and optionally `host_path` | `list(any)` | `[]` | no |
 | <a name="input_capacity_provider_strategies"></a> [capacity\_provider\_strategies](#input\_capacity\_provider\_strategies) | The capacity provider strategies to use for the service. See `capacity_provider_strategy` configuration block: https://www.terraform.io/docs/providers/aws/r/ecs_service.html#capacity_provider_strategy | <pre>list(object({<br/>    capacity_provider = string<br/>    weight            = number<br/>    base              = number<br/>  }))</pre> | `[]` | no |
 | <a name="input_circuit_breaker_deployment_enabled"></a> [circuit\_breaker\_deployment\_enabled](#input\_circuit\_breaker\_deployment\_enabled) | If `true`, enable the deployment circuit breaker logic for the service. If using `CODE_DEPLOY` for `deployment_controller_type`, this value will be ignored | `bool` | `false` | no |

docs/terraform.md

@@ -62,7 +62,7 @@
 | <a name="input_alb_security_group"></a> [alb\_security\_group](#input\_alb\_security\_group) | Security group of the ALB | `string` | `""` | no |
 | <a name="input_assign_public_ip"></a> [assign\_public\_ip](#input\_assign\_public\_ip) | Assign a public IP address to the ENI (Fargate launch type only). Valid values are `true` or `false`. Default `false` | `bool` | `false` | no |
 | <a name="input_attributes"></a> [attributes](#input\_attributes) | ID element. Additional attributes (e.g. `workers` or `cluster`) to add to `id`,<br/>in the order they appear in the list. New attributes are appended to the<br/>end of the list. The elements of the list are joined by the `delimiter`<br/>and treated as a single ID element. | `list(string)` | `[]` | no |
-| <a name="input_availability_zone_rebalancing"></a> [availability\_zone\_rebalancing](#input\_availability\_zone\_rebalancing) | ECS automatically redistributes tasks within a service across Availability Zones (AZs) to mitigate the risk of impaired application availability due to underlying infrastructure failures and task lifecycle activities. The valid values are `ENABLED` and `DISABLED`. | `string` | `null` | no |
+| <a name="input_availability_zone_rebalancing"></a> [availability\_zone\_rebalancing](#input\_availability\_zone\_rebalancing) | ECS automatically redistributes tasks within a service across Availability Zones (AZs) to mitigate the risk of impaired application availability due to underlying infrastructure failures and task lifecycle activities. The valid values are `ENABLED` and `DISABLED`. | `string` | `"DISABLED"` | no |
 | <a name="input_bind_mount_volumes"></a> [bind\_mount\_volumes](#input\_bind\_mount\_volumes) | Task bind mount volume definitions as list of configuration objects. You can define multiple bind mount volumes on the same task definition. Requires `name` and optionally `host_path` | `list(any)` | `[]` | no |
 | <a name="input_capacity_provider_strategies"></a> [capacity\_provider\_strategies](#input\_capacity\_provider\_strategies) | The capacity provider strategies to use for the service. See `capacity_provider_strategy` configuration block: https://www.terraform.io/docs/providers/aws/r/ecs_service.html#capacity_provider_strategy | <pre>list(object({<br/>    capacity_provider = string<br/>    weight            = number<br/>    base              = number<br/>  }))</pre> | `[]` | no |
 | <a name="input_circuit_breaker_deployment_enabled"></a> [circuit\_breaker\_deployment\_enabled](#input\_circuit\_breaker\_deployment\_enabled) | If `true`, enable the deployment circuit breaker logic for the service. If using `CODE_DEPLOY` for `deployment_controller_type`, this value will be ignored | `bool` | `false` | no |

main.tf

@@ -560,6 +560,7 @@ resource "aws_ecs_service" "ignore_changes_task_definition_and_desired_count" {
   desired_count                      = var.desired_count
   deployment_maximum_percent         = var.deployment_maximum_percent
   deployment_minimum_healthy_percent = var.deployment_minimum_healthy_percent
+  availability_zone_rebalancing      = var.availability_zone_rebalancing
   health_check_grace_period_seconds  = var.health_check_grace_period_seconds
   launch_type                        = length(var.capacity_provider_strategies) > 0 ? null : var.launch_type
   platform_version                   = var.launch_type == "FARGATE" ? var.platform_version : null
@@ -713,6 +714,7 @@ resource "aws_ecs_service" "ignore_changes_desired_count" {
   desired_count                      = var.desired_count
   deployment_maximum_percent         = var.deployment_maximum_percent
   deployment_minimum_healthy_percent = var.deployment_minimum_healthy_percent
+  availability_zone_rebalancing      = var.availability_zone_rebalancing
   health_check_grace_period_seconds  = var.health_check_grace_period_seconds
   launch_type                        = length(var.capacity_provider_strategies) > 0 ? null : var.launch_type
   platform_version                   = var.launch_type == "FARGATE" ? var.platform_version : null
@@ -866,6 +868,7 @@ resource "aws_ecs_service" "default" {
   desired_count                      = var.desired_count
   deployment_maximum_percent         = var.deployment_maximum_percent
   deployment_minimum_healthy_percent = var.deployment_minimum_healthy_percent
+  availability_zone_rebalancing      = var.availability_zone_rebalancing
   health_check_grace_period_seconds  = var.health_check_grace_period_seconds
   launch_type                        = length(var.capacity_provider_strategies) > 0 ? null : var.launch_type
   platform_version                   = var.launch_type == "FARGATE" ? var.platform_version : null

variables.tf

@@ -279,7 +279,12 @@ variable "deployment_minimum_healthy_percent" {
 variable "availability_zone_rebalancing" {
   type        = string
   description = "ECS automatically redistributes tasks within a service across Availability Zones (AZs) to mitigate the risk of impaired application availability due to underlying infrastructure failures and task lifecycle activities. The valid values are `ENABLED` and `DISABLED`."
-  default     = null
+  default     = "DISABLED"
+
+  validation {
+    condition     = contains(["ENABLED", "DISABLED"], var.availability_zone_rebalancing)
+    error_message = "The valid values are `ENABLED` and `DISABLED`."
+  }
 }
 
 variable "health_check_grace_period_seconds" {