I use a non privileged, pure (non lxd) LXC-Container on Ubuntu 20.04 at an Raspberry PI 4.
As I can see, it is full functional, but I have some warnings in logfile. I am concerned about the security.
WARN cgfsng - cgroups/cgfsng.c:fchowmodat:1452 - No such file or directory - Failed to fchownat(16, memory.oom.group, 65535, 0, AT_EMPTY_PATH | AT_SYMLINK_ NOFOLLOW ) WARN start - start.c:lxc_spawn:1742 - Operation not permitted - Failed to allocate new network namespace id
I don’t screwed in cgroups and namespaces configuration.
I have enabled the cgroups memory controller, but this changes nothing.
Is this a severe impairment or ignorable?
Can somebody help me to get a deeper inside that happens to get this warnings?