Kubernetes Monitoring with Prometheus: AlertManager, Grafana, PushGateway (part 2).

In the second part of the guide on Kubernetes monitoring with Prometheus, the focus is on integrating additional components like AlertManager, Grafana, and PushGateway to create a comprehensive monitoring stack. AlertManager handles alert classification, grouping, and notification routing based on configured rules, while Grafana provides data visualization through dashboards, which can be auto-configured for convenience. The PushGateway is introduced for collecting metrics from ephemeral and batch jobs that can't be continuously scraped, and it ensures these metrics are retained for later retrieval. The guide also emphasizes the importance of configuring persistent storage for Prometheus metrics using Kubernetes PersistentVolumes, ensuring data retention across pod restarts. This part builds on the basics covered in the first installment, moving towards a more robust monitoring solution and setting the stage for automated deployment using the prometheus-operator in future discussions.