I wrote caman because I could never remember what to type, so it has simple syntax - 4 commands, to add a new host, sign, revoke and renew; the only argument they take are the hostname. Configuration is a one-off when setting up your CA - there are two openssl config files with sensible defaults based on openssl best practice, with a few values for you to customise, and some basic templating for caman to fill out later.