This is one of the primary reasons the Kubernetes folks are working on letting you run with swap! See recent discussion in https://github.com/kubernetes/kuberne

This is one of the primary reasons the Kubernetes folks are working on letting you run with swap! See recent discussion in https://github.com/kubernetes/kubernetes/issues/53533 https://github.com/kubernetes/kubernetes/issues/53533 . The historic reason Kubernetes didn't let you run with swap is that it's complicated from a resource management perspective - it's not clear whether each pod should be requesting some amount of swap the same way it requests some amount of RAM, and also the container runtimes didn't really have support for that (largely because you need cgroupv2 to have a hope of that sort of per-cgroup swap resource control working at all). But it's not an insurmountable problem, and it sounds from that ticket like they recognize that letting systems have swap enabled for the sake of a userspace oomd is an important use case.