I have two, both collecting dust while running. The first runs as domain controller using Samba4 for that. This was a major hazzle to setup since I needed to c

I have two, both collecting dust while running. The first runs as domain controller using Samba4 for that. This was a major hazzle to setup since I needed to compile Samba4 to get it working (the one in the Debian distribution is somewhat shaky). For obvious reasons I never touch this one. The second one runs a GIT repository and serves generally as tinkering box, such as setting up Apache for authenticating against the domain controller. As servers, I wouldn't like to miss them.