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Plataforma crítica (sob NDA) · Indústria · plataformas críticas

Modernização de observabilidade: Prometheus, Grafana, CloudWatch, Opsgenie

Modernização de observabilidade para ambiente crítico cobrindo bancos, Linux e recursos de cloud. Métricas customizadas, alerting calibrado, runbooks linkados.

2025·008· ·3 MESES
Prometheus + Grafana
Stack
Métricas + dashboards
Opsgenie
Alerting
Tier'ed sev1/sev2/sev3
DB + OS + Cloud
Cobertura
Métricas correlacionadas
Reduzido
MTTR
Alertas com runbooks linkados
Critical platform (under NDA) · Industry · critical platforms

Observability modernization: Prometheus, Grafana, CloudWatch, Opsgenie

Observability modernization for a critical environment covering databases, Linux, and cloud resources. Custom metrics, tuned alerting, linked runbooks.

2025·008· ·3 MONTHS
Prometheus + Grafana
Stack
Metrics + dashboards
Opsgenie
Alerting
Tiered sev1/sev2/sev3
DB + OS + Cloud
Coverage
Correlated metrics
Reduced
MTTR
Alerts with linked runbooks

O problema

Ambiente crítico com monitoração reativa: dashboards limitados, alerting baseado em thresholds estáticos, falta de visibilidade cross-stack (banco vs OS vs cloud). Times operavam por intuição + investigação manual durante incidentes. MTTR era alto porque cada incidente exigia escavar logs ao vivo.

Cliente queria operação proativa: alerta antes do impacto, contexto suficiente para resposta rápida, padrão consistente entre times.

Como abordamos

Implementação de stack moderna com foco em correlação cross-layer.

  • Prometheus + Node Exporter: métricas de Linux + métricas customizadas de banco via exporters específicos (Postgres exporter, Oracle exporter via Python)
  • Grafana: dashboards padronizados por workload — DB performance, OS health, cloud cost trend, all em um painel
  • CloudWatch: integrado para métricas AWS-specific (RDS metrics, EC2, Lambda) que Prometheus não coleta
  • Opsgenie: alerting tier’ed com escalation policies. Sev1 = página em call. Sev2 = email + Slack. Sev3 = dashboard only
  • Runbooks: cada alerta crítico tem runbook linkado direto na notificação. Pessoa em call abre Opsgenie → vê alerta + link para o procedimento

Alertas calibrados em iterações: começamos conservadores (muitos alertas), refinamos por workload, terminamos com alerting acionável — cada página = ação esperada, sem ruído.

Handover

Stack entregue ao time interno + documentação operacional + treinamento para evolução das métricas. Cliente mantém Prometheus + Grafana internamente. Modelo de governança trimestral acordado para revisar alerting e adicionar novos targets conforme plataforma evolui.

The problem

Critical environment with reactive monitoring: limited dashboards, alerting based on static thresholds, lack of cross-stack visibility (database vs OS vs cloud). Teams operated by intuition + manual investigation during incidents. MTTR was high because each incident required live log digging.

Client wanted proactive operations: alert before impact, sufficient context for fast response, consistent pattern across teams.

How we approached it

Modern stack implementation focused on cross-layer correlation.

  • Prometheus + Node Exporter: Linux metrics + custom database metrics via specific exporters (Postgres exporter, Oracle exporter via Python)
  • Grafana: standardized dashboards per workload — DB performance, OS health, cloud cost trend, all in one panel
  • CloudWatch: integrated for AWS-specific metrics (RDS metrics, EC2, Lambda) that Prometheus doesn’t collect
  • Opsgenie: tiered alerting with escalation policies. Sev1 = phone in call. Sev2 = email + Slack. Sev3 = dashboard only
  • Runbooks: each critical alert has a runbook linked directly in the notification. Person on-call opens Opsgenie → sees alert + link to the procedure

Alerts tuned iteratively: started conservative (many alerts), refined per workload, ended with actionable alerting — each page = an expected action, no noise.

Handover

Stack delivered to internal team + operational documentation + training for metric evolution. Client maintains Prometheus + Grafana internally. Quarterly governance model agreed for alerting review and adding new targets as the platform evolves.

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