Kubernetes is a popular orchestrator for running containerized workloads in production, but it requires additional tools like Prometheus for monitoring and alerting. Prometheus is an open-source monitoring system that collects metrics in a time series database, allowing administrators to gain insights into cluster utilization, performance, and errors. The kube-prometheus-stack Helm chart provides an automated solution for deploying Prometheus, Grafana, Alertmanager, and vital metrics exporters within a Kubernetes cluster. This article guides users through the process of setting up and using Prometheus with their Kubernetes cluster, including installing kube-prometheus-stack, querying data, creating visual dashboards, and managing alerting rules.