Why did you stop letting me on the server?

Question

ubuntu

Good morning to all, if someone has a good one ... Last night, after working with the mail server, I discovered a "cool" thing on my server. I can't log in anywhere at all, neither via SSH nor directly... The only thing I did while working with him yesterday was to create the /etc/securetty file for Dovecot. Now I can't do anything since this is the first time I've encountered such garbage...

Server OS: Ubuntu Server 20.04.1
More details in the video: https://cloud.roffdaniel.com/f/c4b9ce836c9744bcb0ec/

Thanks in advance!

Answer 1

Are the drives encrypted? If yes, then the situation is lousy.
If not, take any distro with live cd (the same ubuntu desktop), mount disks and study the contents of /var/log. All answers are there

Answer 2

Reboot into single user mode and see if you can fix it.