A Ready Node Can Still Drift from Its Baseline
A green Ready status and a correct node configuration are not the same guarantee. Consider several node classes with configuration baselines in Git. The baselines define resource reservations, eviction thresholds, and image garbage collection settings. Actual host files can differ from those baselines while Kubernetes continues reporting the nodes as ready. This scenario lets us examine the problem without describing a particular cluster or operations tool. A node can work now yet react differently from its peers once memory or disk becomes scarce. ...