Nowadays, to detect and prevent failures, it is very convenient to have a good monitoring tool, that is why you need a monitoring system. Monitoring systems are responsible for controlling the technology used by a company (hardware, networks and communications, operating systems or applications) in order to analyze their operation and performance, and to detect and alert about possible errors. A good monitoring system is able to monitor devices, infrastructures, applications, services, and even business processes. A good monitoring system helps to increase productivity. This is shown through several aspects. In this article, I’ll guide you to setup monitoring stack using Prometheus and alertmanager on a Kubernetes cluster and collect node, pods and services metrics automatically using Kubernetes service discovery configurations.