Bug#972064: Second problem: namespace permission denied

[Emmanuel Bourg]

Le 2020-10-12 01:05, Jan Michael Greiner a écrit :

> systemd[1253]: tomcat9.service: Failed to set up mount namespacing:
> Permission denied
> systemd[1253]: tomcat9.service: Failed at step NAMESPACE spawning
> /bin/sh: Permission denied

This looks like an issue with the configuration of the LXC container, 
could you check in the logs of the host why the permission was denied? 
If the container isn't unprivileged this is maybe an issue with 
AppArmor, adding this line to the container conf file might help:

   lxc.apparmor.profile: unconfined

Emmanuel Bourg