Configuring puma

rails

#1

Trying to use PUMA as my app server… But this happens when I try and start the server:
trimakas:~/workspace (master) $ rails s -p $PORT -b $IP => Booting Puma => Rails 4.2.3 application starting in development on http://0.0.0.0:8080 => Runrails server -hfor more startup options => Ctrl-C to shutdown server [39230] Puma starting in cluster mode... [39230] * Version 3.4.0 (ruby 2.3.0-p0), codename: Owl Bowl Brawl [39230] * Min threads: 5, max threads: 5 [39230] * Environment: development [39230] * Process workers: 2 [39230] * Preloading application [39230] * Listening on tcp://0.0.0.0:8080 Exiting /usr/local/rvm/gems/ruby-2.3.0/gems/puma-3.4.0/lib/puma/binder.rb:255:ininitialize’: Address already in use - bind(2)
for “0.0.0.0” port 8080 (Errno::EADDRINUSE)`

I then try and find why its in use with:
lsof -wni tcp:8080

But nothing is found??! What am I doing wrong?

Thanks
Todd