CloudWatch¶

Monitoramento e alarmes do TepConfina no Amazon CloudWatch.

Visao Geral¶

O CloudWatch centraliza metricas, alarmes e dashboards para monitoramento da infraestrutura e aplicacao em tempo real.

flowchart TB
    subgraph Fontes
        ECS[ECS Fargate]
        RDS[RDS PostgreSQL]
        Redis[ElastiCache Redis]
        ALB[Application Load Balancer]
    end

    subgraph CloudWatch
        Metricas[Metricas]
        Alarmes[Alarmes]
        Dashboard[Dashboard]
    end

    ECS --> Metricas
    RDS --> Metricas
    Redis --> Metricas
    ALB --> Metricas
    Metricas --> Alarmes
    Metricas --> Dashboard
    Alarmes --> SNS[SNS Email]

Alarmes Configurados¶

ECS Fargate¶

Alarme	Condicao	Periodo	Acao
CPU Alta	CPU > 80% por 5 min	5 min	SNS Notificacao
Memoria Alta	Memoria > 85% por 5 min	5 min	SNS Notificacao
Sem Tasks Rodando	Running tasks = 0	1 min	SNS Notificacao

RDS PostgreSQL¶

Alarme	Condicao	Periodo	Acao
Conexoes Altas	Conexoes > 80	5 min	SNS Notificacao
CPU Alta	CPU > 80% por 10 min	5 min	SNS Notificacao
Latencia de Leitura	Read latency > 20ms	5 min	SNS Notificacao

ElastiCache Redis¶

Alarme	Condicao	Periodo	Acao
Memoria Alta	Memoria > 80%	5 min	SNS Notificacao

Application Load Balancer¶

Alarme	Condicao	Periodo	Acao
Erros 5xx	5xx > 10 em 5 min	5 min	SNS Notificacao

Configuracao Terraform¶

resource "aws_cloudwatch_metric_alarm" "ecs_cpu_high" {
  alarm_name          = "tepconfina-${var.environment}-ecs-cpu-high"
  comparison_operator = "GreaterThanThreshold"
  evaluation_periods  = 2
  metric_name         = "CPUUtilization"
  namespace           = "AWS/ECS"
  period              = 300
  statistic           = "Average"
  threshold           = 80

  dimensions = {
    ClusterName = aws_ecs_cluster.main.name
    ServiceName = aws_ecs_service.api.name
  }

  alarm_actions = [aws_sns_topic.alerts.arn]
}

resource "aws_cloudwatch_metric_alarm" "alb_5xx" {
  alarm_name          = "tepconfina-${var.environment}-alb-5xx"
  comparison_operator = "GreaterThanThreshold"
  evaluation_periods  = 1
  metric_name         = "HTTPCode_Target_5XX_Count"
  namespace           = "AWS/ApplicationELB"
  period              = 300
  statistic           = "Sum"
  threshold           = 10

  dimensions = {
    LoadBalancer = aws_lb.main.arn_suffix
  }

  alarm_actions = [aws_sns_topic.alerts.arn]
}

Dashboard¶

O dashboard centralizado exibe as metricas mais importantes em tempo real.

Widgets do Dashboard¶

Secao	Metricas Exibidas
ECS	CPU Utilization, Memory Utilization
ALB	Request Count, Target Response Time, HTTP 5xx
RDS	Database Connections, CPU Utilization
Redis	Current Connections, Memory Usage

Configuracao do Dashboard¶

resource "aws_cloudwatch_dashboard" "main" {
  dashboard_name = "tepconfina-${var.environment}"
  dashboard_body = jsonencode({
    widgets = [
      {
        type   = "metric"
        x      = 0
        y      = 0
        width  = 12
        height = 6
        properties = {
          title   = "ECS CPU & Memory"
          metrics = [
            ["AWS/ECS", "CPUUtilization", "ClusterName", "tepconfina"],
            ["AWS/ECS", "MemoryUtilization", "ClusterName", "tepconfina"]
          ]
          period = 300
          region = var.region
        }
      }
    ]
  })
}

Notificacoes SNS¶

Os alarmes disparam notificacoes via Amazon SNS:

Configuracao	Valor
Protocolo	Email
Endpoint	ops@tepconfina.com
Topico	tepconfina-{env}-alerts

resource "aws_sns_topic" "alerts" {
  name = "tepconfina-${var.environment}-alerts"
}

resource "aws_sns_topic_subscription" "email" {
  topic_arn = aws_sns_topic.alerts.arn
  protocol  = "email"
  endpoint  = "ops@tepconfina.com"
}

Confirmacao de email

Ao criar a subscription, o AWS envia um email de confirmacao. E necessario confirmar para comecar a receber as notificacoes.

Acesso ao Dashboard¶

Acesse o Console AWS CloudWatch
Navegue ate Dashboards
Selecione tepconfina-production ou tepconfina-staging

Periodo personalizado

Ajuste o periodo de visualizacao no canto superior direito do dashboard para analisar tendencias historicas.