The article provides an in-depth guide on using Heartbeat, a tool from the Elastic Beat family, to monitor the uptime and performance of services by defining various types of Monitors. It outlines how Heartbeat can continuously check the availability and response times of services through protocols such as ICMP, TCP, and HTTP, which operate at different levels of the OSI Model. The text explains the setup process, from installing Heartbeat via APT repositories to configuring it to communicate with Elasticsearch, and highlights the importance of defining Monitors in separate YAML files for clarity. It also covers creating simple TCP and more complex HTTP Monitors, showcasing how they can be used to track the health of services like Elasticsearch and Kibana. Additionally, the article demonstrates how to visualize collected data using a predefined Heartbeat dashboard in Kibana, providing insights into service performance. Finally, it suggests stopping Heartbeat and cleaning up indices as a final step to maintain system organization.