Unable to start rails server

Question

I am trying to start rails server using rails s command. But i'm getting the following error:

A server is already running. Check repo/tmp/pids/server.pid.

I checked the file, but its blank. There is no id in the server.pid file. Then I tried to find out the process running on port 3000 using the command lsof -wni tcp:3000. It also does not show any id.

Then I tried starting the server on a different port using rails s -p 3001, but this also gives the same error. Please could someone explain what is going on.

Thanks

EDIT: does not work even after restarting computer

Answer 1

1- Use the command below for checking that how many server currently running

$ ps aux | grep rails

---

2- For killing the existing server

$ kill -9 pid

Answer 2

Just remove the file then:

 rm repo/tmp/pids/server.pid

Answer 3

Try running this command in your terminal window.

kill -9 $(lsof -i tcp:3000 -t)

If it doesn't work, you can always just restart your computer/server...