🔧 Metric #3: ECS Task CPU Utilization. Keep task CPU usage under 80% for healthy performance.

util.tf

resource "awscc_applicationsignals_service_level_objective" "cpu_utilization_slo" {
  name        = "ecs-cpu-slo"
  description = "Keep ECS CPU Utilization below 80%"

  sli = {
    comparison_operator = "LessThan"
    metric_threshold    = 80.0

    sli_metric = {
      metric_data_queries = [{
        id = "cpu"
        metric_stat = {
          metric = {
            namespace   = "AWS/ECS"
            metric_name = "CPUUtilization"
            dimensions = [
              {
                name  = "ClusterName"
                value = "my-cluster-name"
              },
              {
                name  = "ServiceName"
                value = "my-service-name"
              }
            ]
          }
          period = 300
          stat   = "Average"
        }
      }]
    }
  }

  goal = {
    attainment_goal = 99.5
    interval = {
      rolling_interval = {
        duration      = 7
        duration_unit = "DAY"
      }
    }
  }

  burn_rate_configurations = [
    { look_back_window_minutes = 60 },
    { look_back_window_minutes = 1440 }
  ]
}