# On cgroup v2 nodes, which kubelet configuration field makes the kernel OOM-kill only the offending process in a container instead of every process in it?

Kubernetes, Hard (Expert), Concepts. https://k8wiz.com/uquiz/on-cgroup-v2-nodes-which-kubelet-configuration-field-makes-the-kernel-oom-kill-only-the-offending-process-in-a-container-instead

- A. kernelMemcgNotification: true
- B. memoryOOMGroup: false
- C. oomKillMode: Process
- D. singleProcessOOMKill: true

**Answer:** singleProcessOOMKill: true

**Explanation:** By default on cgroup v2 the kubelet sets memory.oom.group on each container's cgroup, so an OOM kill takes down all processes in the container together. singleProcessOOMKill: true stops the kubelet from setting that flag, which matches the old cgroup v1 behavior. kernelMemcgNotification is a real field, but it only makes the kubelet notice memory pressure faster for eviction.