← DevOps & CI/CD learning pathDevOps & CI/CD · Module 8 of 10
Monitoring and observability
Know what is happening in production.
📖 Key ideas
- Three pillars: metrics, logs, traces.
- Prometheus + Grafana for metrics and dashboards.
- Centralised logs: ELK/OpenSearch, Loki, Cloud Logging.
- Distributed tracing with OpenTelemetry and Jaeger.
- Alerts should be actionable; define SLOs.
💡 Real-life example: Observability is a car dashboard plus a black-box recorder for your software.
MetricsNumeric measurements over time
LogsEvent records
TracesRequest path across services
SLOService Level Objective