How to kill all instance of uwsgi

Question

I am trying to upload my project to the server. There is already a project in the server now. I have new project which I want to run and replace the old project with the new one, so I pull the new project to the server. Then I activate the virtual environment and do all the necessary work. Then when I try to run the command:

uwsgi --plugins=python --chdir=/var/www/prjt/src/ --socket=127.0.0.1:8889 --module=prjt.wsgi:application &

it tell me that

probably another instance of uWSGI is running on the same address (127.0.0.1:8889).
bind(): Address already in use [core/socket.c line 761]

I searched for similar problems and found some solutions about killing all instance of uwsgi as mentioned in this answer here but could not find how to do it.

Answer 1

for me the way to kill uwsgi instances in a bruteforce manner was:

sudo pkill -f uwsgi -9

Answer 2

Add a pidfile to your command:

uwsgi --plugins=python --chdir=/var/www/prjt/src/ --socket=127.0.0.1:8889 --module=prjt.wsgi:application --pidfile /tmp/myapp.pid

Then use

uwsgi --stop /tmp/myapp.pid

to stop the uwsgi instance in a safe way.

If you didn't specify a pidfile when you started the first instance, you can kill it brutally using

kill `pidof uwsgi`