I recently set up a Kubernetes lab to monitor a Node.js application using Prometheus, Grafana, and Alertmanager. This project helped me deepen my understanding of Kubernetes monitoring, alerting, and observability stacks. In this post, I’ll walk through: ✅ Deploying a Node.js app in Kubernetes ✅ Setting up Prometheus to scrape metrics ✅ Configuring Grafana for visualization ✅ Defining alert rules with Alertmanager 🔹 Why this project? Observability is key for scalable applications. With Prometheus, Grafana, and Alertmanager, we can: 🔍 Collect detailed metrics 📊 Visualize application & cluster performance 🚨 Set up automated alerts