val@val:~$ mkdir mgtu

val@val:~$ cat mgtu/index.html

<h1>val.mgtu.ru</h1>

root@val:~# cat /etc/apache2/sites-available/val.mgtu.ru.conf

<VirtualHost *:80>
  ServerName val.mgtu.ru
  DocumentRoot /home/val/mgtu
  <Directory /home/val/mgtu>
    Require all granted
  </Directory>
</VirtualHost>

root@val:~# a2ensite val.mgtu.ru

root@val:~# systemctl reload apache2

val@val:~$ mkdir -p mgtu/.well-known/acme-challenge/

root@val:~# snap install --classic certbot

val@val:~$ vim mgtu/.well-known/acme-challenge/NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN