Scale up as you grow — whether you're running one virtual machine or ten thousand.

From GPU-powered inference and Kubernetes to managed databases and storage, get everything you need to build, scale, and deploy intelligent applications.

This textbox defaults to using Markdown to format your answer.
You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
Accepted Answer
I would strongly recommend against attempting to run discourse and cPanel on the same server. cPanel/WHM is very specific about what software is on a server when it is installed. A fresh server is vital to ensuring things are set up properly. Once a cPanel/WHM server is set up you should manage it with the control panel and WHM command line tools only as changing configuration files or other things outside of cPanel/WHM can again break things.
I would recommend setting up your cPanel server (or a standard LAMP server) and migrating your vBulletin site over but using a separate droplet for discourse. That way you can perform your migration, test and then update your DNS records to make the switch.