I am learning myself too, and I was successful to install postgres binary as root and yes you are still needed to create postgres os user to run postgres db as same as oracle and mysql Make sure all the libraries are downloaded.
v/r,
Bach-Nga
No one in this world is pure and perfect. If you avoid people for their mistakes you will be alone. So judge less, love and forgive more.
To call him a dog hardly seems to do him justice though in as much as he had four legs, a tail, and barked, I admit he was, to all outward appearances. But to those who knew him well, he was a perfect gentleman (Hermione Gingold)