Cloud Monitoring & Observability with Prometheus & Grafana
Collect time-series metrics using Prometheus scraping targets, build Grafana visual monitoring dashboards, and configure Alertmanager thresholds.
The Three Pillars of Observability
### Observability Pillars
1. **Metrics**: Numeric time-series values aggregated over intervals (CPU %, Memory usage).
2. **Logs**: Structured timestamped event records (`journalctl`, JSON stdout).
3. **Traces**: Distributed request propagation paths across microservices (OpenTelemetry).