Open Source Observability Stack Essentials

Modern cloud-native applications rarely crash outright. Instead, they fail in subtle ways such as latency spikes, partial errors, or noisy dependencies. This course helps you become productive with the open-source trio used across the industry: Prometheus for metrics and PromQL analysis, Grafana for dashboards and alerting, and OpenTelemetry for standard, vendor-neutral instrumentation. You will launch a small local stack, scrape metrics, and build a practical three-panel dashboard that tracks requests, errors, and latency. Then you will create alerts that actually matter and instrument a samp…