Kubernetes History Inspector: Visualizing Your Cluster Logs
In the chaotic ecosystem of a high-velocity Kubernetes cluster, state is fluid. Pods recycle, nodes scale, and ReplicaSets roll over. For the Senior DevOps Engineer or SRE, the most frustrating limitation of the default Kubernetes control plane is the ephemeral nature of Events . By default, Kubernetes events persist for only one hour. When you wake up to a paged alert at 3:00 AM for a crash that happened at 1:30 AM, kubectl get events is often a blank slate. This is where the concept of a Kubernetes History Inspector becomes critical. It is not just a tool; it is a strategic approach to observability that involves capturing, persisting, and visualizing cluster logs and events over time. This guide explores how to implement a robust history inspection strategy, moving beyond the default etcd retention limits to establish a permanent "flight recorder" for your cluster. The Problem: The Ephemeral Event Loop To understand th...