as the title says, is this possible?
After googling what directadmin is... I'm not aware of anyone doing anything with it. Certainly not see any posts here or the old google group on it. From its website, its not entirely clear where anyone would begin with it.
me neither, but someone offer that to me and didn't know where to start jaj
If you want some tools to admin an existing server such as a Pi or a VPS, try webmin. Free. Easy remote access, reasonably secure.