Google says it’s a popular topic, but I haven’t heard of cPanel and RoR used in the same sentence.
RoR installations is pretty easy to administer in a standard command line, beside that, you can have cPanel on your server to do common administrative tasks (I use webmin myself)
Can someone tell me what are the advantages of using cPanel to manage RoR?
I'm struggling with cPanel & RoR at the moment & it's unpleasant. Heroku's a
far more sensible approach & any troubleshooting necessary can be done via
this list & Google/Stack Overflow.
Do you have your app in a git repo? Then you're set. A one-dyno
setup is free, so just try it.
You may find some things that need changing, but it'll be a good
exercise. Even when a client has existing hosting, I always use a
Heroku instance as a test/staging server to wring out non-portable
(non-cloud-friendly) code.