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Node-pressure eviction

The last three articles were about placing pods. This one is about evicting them — but not preemption (scheduler, for priority) or the OOM kill (kernel, for exceeding a limit). This is the kubelet proactively killing pods when a node truly runs out of RAM or disk, by its own thresholds and ranking. This article creates real memory pressure on a worker by hand, then watches the kubelet evict the right hungriest pod — with an eviction message that says exactly why.