I believe you can decrease OOMScoreAdjust for systemd machines.slice, under which guest domains are to reduce chances of oom killing them.

ср, 20 июл. 2022 г., 21:52 hai wu <haiwu.us@gmail.com>:

nova hypervisor sometimes oom would kill some openstack guests.

Is it possible to not allow kernel to oom kill any openstack guests?
ram is not oversubscribed much ..