Running multiple instances of Rails Server

Question

I am new to Rails, so please forgive me if this is obvious.

I am doing a lot of experimenting, creating to applications, testing features, etc. It got my first scaff

Answer 1

rails s -p 4000 --pid tmp/pids/server2.pid

The above command will safely start a second server in port 4000

Answer 2

You can run multiple instances of webrick server on localhost by assigning a different port number as:

rails s -p 3007

But sometimes it may not work.

I have a tip for you.You can try using this along with other options provided by webrick. Just try with providing any number as PID using -P :

rails s -p 3007 -P 42342