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In-place Pod Resize

Throughout the series, changing a container's resources meant recreating the pod. In-place pod resize breaks that: adjust a running pod's CPU/memory without a restart, via the resize subresource. This article resizes a real pod, then inspects cgroup v2 on the node changing in place with restartCount still 0 — the 'no disruption' counterpart to Article 40's vertical scaling — and two constraints: you can't change QoS, and why memory needs its own resizePolicy.