This guide the simplest way to install a virtualmin manually on Debian.
Install some dependencies.
1 apt-get install libnet-ssleay-perl libauthen-pam-perl libio-pty-perl apt-show-versions python apt-transport-https
Then add the GPG keys.
1 curl "https://software.virtualmin.com/lib/RPM-GPG-KEY-virtualmin-6" | apt-key add -
2 curl "https://software.virtualmin.com/lib/RPM-GPG-KEY-webmin" | apt-key add -
And then add the repos to /etc/apt/sources.lists
1
2
3 deb https://software.virtualmin.com/vm/6/gpl/apt/ virtualmin-buster main
4 deb https://software.virtualmin.com/vm/6/gpl/apt/ virtualmin-universal main
After this, just install webmin and virtualmin.
1 apt-get install webmin
2 apt-get install webmin-virtual-server webmin-virtual-server-theme
Service packages like bind9 will need to be installed of course.