autoscaling.tf

resource "aws_appautoscaling_target" "ecs_target" {
  count              = local.cluster_count
  max_capacity       = 2
  min_capacity       = 1
  resource_id        = "service/${aws_ecs_cluster.cluster_iac[0].name}/${aws_ecs_service.service_cluster[0].name}"
  scalable_dimension = "ecs:service:DesiredCount"
  service_namespace  = "ecs"
}

resource "aws_appautoscaling_policy" "memory" {
  count              = local.cluster_count
  name               = "memory"
  policy_type        = "TargetTrackingScaling"
  resource_id        = aws_appautoscaling_target.ecs_target[0].resource_id
  scalable_dimension = aws_appautoscaling_target.ecs_target[0].scalable_dimension
  service_namespace  = aws_appautoscaling_target.ecs_target[0].service_namespace

  target_tracking_scaling_policy_configuration {
    predefined_metric_specification {
      predefined_metric_type = "ECSServiceAverageMemoryUtilization"
    }

    target_value = 80
  }
}

resource "aws_appautoscaling_policy" "cpu" {
  count              = local.cluster_count
  name               = "cpu"
  policy_type        = "TargetTrackingScaling"
  resource_id        = aws_appautoscaling_target.ecs_target[0].resource_id
  scalable_dimension = aws_appautoscaling_target.ecs_target[0].scalable_dimension
  service_namespace  = aws_appautoscaling_target.ecs_target[0].service_namespace

  target_tracking_scaling_policy_configuration {
    predefined_metric_specification {
      predefined_metric_type = "ECSServiceAverageCPUUtilization"
    }

    target_value = 80
  }
}