Instructions for enabling the memory cgroup on Ubuntu 18 and 19 involve adding
cgroup_enable=cpuset cgroup_enable=memory cgroup_memory=1 to
/boot/firmware/nobtcmd.txt and restarting. After rebooting,
grep mem /proc/cgroups should show it as enabled.
I find that on Ubuntu 20.04 the above instructions are not working for me, and Kubernetes continues to error
[ERROR SystemVerification]: missing cgroups: memory. Any suggestions?