Jan 05 11:48:29 test5 systemd[1]: Starting Network Service...
Jan 05 11:48:29 test5 systemd[1]: Failed to add a watch for /run/systemd/ask-password: inotify watch limit reached
Jan 05 11:48:29 test5 systemd-networkd[175]: Failed to connect to bus: No space left on device
Jan 05 11:48:29 test5 systemd-networkd[175]: Could not connect to bus: No space left on device
Jan 05 11:48:29 test5 systemd[1]: systemd-networkd.service: Main process exited, code=exited, status=1/FAILURE
Jan 05 11:48:29 test5 systemd[1]: systemd-networkd.service: Failed with result 'exit-code'.
Jan 05 11:48:29 test5 systemd[1]: Failed to start Network Service.
journactl is full of red text, all of which is either No space left on device or inotify watch limit reached. Looks like a lot of other services also failed.
Edit: here is df -h inside the container:
df -h
Filesystem Size Used Avail Use% Mounted on
default/containers/test5 52G 581M 51G 2% /
none 492K 4.0K 488K 1% /dev
udev 32G 0 32G 0% /dev/tty
tmpfs 100K 0 100K 0% /dev/lxd
tmpfs 100K 0 100K 0% /dev/.lxd-mounts
tmpfs 32G 0 32G 0% /dev/shm
tmpfs 6.3G 144K 6.3G 1% /run
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 32G 0 32G 0% /sys/fs/cgroup