learning how to run systemd in a container, journal shows errors I would like to understand what they mean and why

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Dear Systemd community,

this is the devel list so I am not sure whether I should be emailing here for community support/advice, please forgive mr otherwise and point me to the right direction.

I am not an expert by any means in container technology or systemd but trying to learn.

I have a k8s cluster with docker as container runtime and am I trying to make systemd to work. I read this doc https://developers.redhat.com/blog/2016/09/13/running-systemd-in-a-non-privileged-container#enter_oci_hooks and I have systemd running in a container.

[root@nid001002-cluster-1 tmp]# ps aux
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.0  43204  3340 ?        Ss   11:11   0:00 /usr/lib/systemd/systemd --system
root        17  0.0  0.0  39060  5224 ?        Ss   11:11   0:00 /usr/lib/systemd/systemd-journald
dbus        23  0.0  0.0  58088  2112 ?        Ss   11:11   0:00 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
root        25  0.0  0.0 112984  4312 ?        Ss   11:11   0:00 /usr/sbin/sshd -D
root        78  0.0  0.0  11828  1968 pts/0    Ss   11:24   0:00 bash
root       104  0.0  0.0 147676  3684 ?        Ss   11:24   0:00 /usr/sbin/slurmd -D
root       118  0.0  0.0  51732  1732 pts/0    R+   11:46   0:00 ps aux 

My question is that journalctl shows he following:

Mar 25 11:24:31 nid001002-cluster-1 systemd[1]: Failed to reset devices.list on /kubepods/burstable/podcd69d169-d610-4af7-895a-eb86ee74ed49/4caa4403b8b6d263012e95ca51357ab0bb46fb3bc7a23221115d22efb757cc9c/system.slice/etc-resolv.conf.mount: Operation not permitted

I would like to ask the meaning of this message and how to solve it (if possible)

thank you very much


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