Clout9 (c9.io) IDE ruby on rails error when run rails s

Question

When running rails server on cloud9, I get: No application seems to be running here! I tried removing the workspace, cloning it from a repository on github, and nothing works.

Answer 1

The solution that works for me is:

to start the server, do not simply type

  rails s

but instead

 rails s -b $IP -p $PORT