Set up observability for applications and infrastructure with metrics, logs, traces, and alerts.
Real data. Real impact.
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Open source
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| Level | Tools | Setup Time | Best For |
|---|---|---|---|
| Minimal | UptimeRobot, Healthchecks.io | 15 min | Side projects, MVPs |
| Standard | Uptime Kuma, Sentry, basic Grafana | 1-2 hours | Small teams, startups |
| Professional | Prometheus, Grafana, Loki, Alertmanager | 1-2 days | Production systems |
| Enterprise | Datadog, New Relic, or full OSS stack | Ongoing | Large-scale operations |
| Pillar | What It Answers | Tools |
|---|---|---|
| Metrics | "How is the system performing?" | Prometheus, Grafana, Datadog |
| Logs | "What happened?" | Loki, ELK, CloudWatch |
| Traces | "Why is this request slow?" | Jaeger, Tempo, Sentry |
"I just want to know if it's down" → UptimeRobot (free) or Uptime Kuma (self-hosted). See
simple.md"I need to debug production errors" → Sentry with your framework SDK. 5-minute setup. See
apm.md"I want real observability" → Prometheus + Grafana + Loki. See
prometheus.md"I need to centralize logs" → Loki for simple, ELK for complex queries. See
logs.md| Do | Don't |
|---|---|
| Alert on symptoms (user impact) | Alert on causes (CPU high) |
| Include runbook link | Require investigation to understand |
| Set appropriate severity | Make everything P1 |
| Require action | Alert on "interesting" metrics |
Alert fatigue kills monitoring. If alerts are ignored, you have no monitoring.
For alert configuration, severities, and on-call setup, see
alerting.md| Solution | Monthly Cost (small) | Monthly Cost (medium) |
|---|---|---|
| UptimeRobot | Free | $7 |
| Uptime Kuma | $5 (VPS) | $5 (VPS) |
| Sentry | Free / $26 | $80 |
| Grafana Cloud | Free tier | $50+ |
| Datadog | $15/host | $23/host + features |
| Self-hosted stack | $10-20 (VPS) | $50-100 (VPS) |
No automatic installation available. Please visit the source repository for installation instructions.
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