How to 'clear' the port when restarting django runserver

Question

Often, when restarting Django runserver, if I use the same port number, I get a \'port is already in use\' message. Subsequently, I need to increment the port number each t

Answer 1

sudo lsof -t -i tcp:8000 | xargs kill -9

If you want to free 8000 port than just copy command and paste in your cmd it will ask for sudo password. And then you are good to go.

Answer 2

In Leopard, I bring on the Activity Monitor and kill python. Solved.

Answer 3

Add the following library in manage.py

import os
import subprocess
import re

Now add the following python code after if __name__ == "__main__":

ports = ['8000']
popen = subprocess.Popen(['netstat', '-lpn'],
                         shell=False,
                         stdout=subprocess.PIPE)
(data, err) = popen.communicate()
pattern = "^tcp.*((?:{0})).* (?P<pid>[0-9]*)/.*$"
pattern = pattern.format(')|(?:'.join(ports))
prog = re.compile(pattern)
for line in data.split('\n'):
    match = re.match(prog, line)
    if match:
        pid = match.group('pid')
        subprocess.Popen(['kill', '-9', pid])

This will first find the process id of port 8000 , will kill it and then restart your project. Now each time you don't need to kill the pid manually.

Answer 4

If the ps aux command (as per Meilo's answer) doesn't list the process that you wanted to kill but shows the port active in netstat -np | grep 8004 network activity, try this command (worked on Ubuntu).

sudo fuser -k 8004/tcp

where as, 8004 is the port number that you want to close. This should kill all the processes associated with port 8004.

Answer 5

Happened so often that I wrote an alias to kill the process with python in the name (careful if you have other such processes). Now I just run (no Ubuntu)

kill $(ps | grep "python" | awk "{print $1}")

You can even add python manage.py runserver ... to the same alias so you can restart with two keystrokes.

Answer 6

netstat -tulpn |grep 8000|awk '{print $7}'|cut -d/ -f 1|xargs kill