Thank you, today my Ubuntu 16.04 booted into the maintenance mode and systemctl --failed showed only nfs-resolvd.service. I made
# systemctl restart ssh
then I got:
"System is booting up. See pam_nologin(8)"
Authentication failed.
# rm -fv /run/nologin
solved the issue.
I ran
# apt install --reinstall systemd
and /run/nologin did not appear again.
Thank you, today my Ubuntu 16.04 booted into the maintenance mode and systemctl --failed showed only nfs-resolvd. service. I made
# systemctl restart ssh
then I got:
"System is booting up. See pam_nologin(8)"
Authentication failed.
# rm -fv /run/nologin
solved the issue.
I ran
# apt install --reinstall systemd
and /run/nologin did not appear again.