With the growing complexity of modern systems, it is getting more and more difficult to ensure your system is supportable and that you can troubleshoot current issues and timely discover upcoming problems. Large scale systems introduced application monitoring and systems like Prometheus, Nagios or Dynatrace. Microservices made distributed tracing like Jaeger a must-have for modern setups. Modern SRE practices make tracking Service Level Objectives (SLOs) essential when it comes to maintaining the quality of service. In the 2020s there is an open source ecosystem emerging around all these technologies.

In this presentation we will talk about why observability matters for your projects, regardless of the technology stack you use. And why does everyone benefit from the open ecosystem around it? We will discuss how to implement it using the open source technology stack: OpenTelemetry (for traceability, logging, and metrics), CloudEvents, Prometheus and Grafana, and Keptn for tracking SLIs/SLOs and automating actions based on them.