Address already in use - bind(2) for "127.0.0.1" port 3000 (Errno::EADDRINUSE)

Question

I've tried lsof -wni tcp:3000 But ouput is empty.

The uput of ps aux | grep puma is

kirillo+  139882  0.0  0.0  20504  2916 pts/1    S+   13:43   0:00 grep --color=auto --exclude-dir=.bzr --exclude-dir=CVS

But when I submit kill -9 139882

the output is:

kill 139882 failed: no such process

What should I do to start server on localhost:3000?

Answer 1

Docker container was using port 3000 :)