Explore the fundamentals of infrastructure monitoring in this comprehensive talk that introduces Telegraf, Grafana, and InfluxDB. Learn how to install, configure, and utilize these open-source tools to monitor system performance, resource utilization, and network traffic. Discover the differences between monitoring and observability, understand Telegraf's architecture and setup process, and gain insights into data collection, storage, and visualization. Delve into concepts such as data modeling, OpenTelemetry schema, and Grafana flow. Practice creating effective dashboards, setting up alerts, and integrating with other monitoring tools like Prometheus. By the end of this session, acquire a solid foundation in infrastructure monitoring and hands-on experience with Telegraf, Grafana, and InfluxDB to effectively monitor your IT systems.