Python script as daemon in ubuntu

Question

I created a daemon to run a python script. but it stops whenever i logout from my ubuntu machine.

DAEMON=sudo python /var/www/some_dir/my_python.py
ARGS=/var/www/some_dir/my_python.py
PIDFILE=/var/www/some_dir/my_python.pid

test -x $DAEMON || exit 0

#set -e

case "$1" in
start)
    echo -n "Starting $DESC: "
    start-stop-daemon --start --pidfile $PIDFILE --exec $DAEMON &
    echo "$NAME."
    ;;
stop)
    echo -n "Stopping $DESC: "
    start-stop-daemon --stop --pidfile $PIFDILE --exec $DAEMON
    echo "$NAME."
    ;;
restart|force-reload)
    echo -n "Restarting $DESC: "
    start-stop-daemon --stop --pidfile $PIDFILE --exec $DAEMON
    sleep 1
    start-stop-daemon --start --pidfile $PIDFILE --exec $DAEMON &
    echo "$NAME."
    ;;
*)
    N=/etc/init.d/$NAME
    echo "Usage: $N {start|stop|restart|force-reload}" >&2
    exit 1
    ;;
esac
exit 0

can anyone tell me how can i do it.

Maybe this can help you: [starting and stopping a daemon at user login logout][1] [1]: stackoverflow.com/questions/3950585/… — Bihaqo
– Bihaqo, Commented Mar 1, 2012 at 17:28
I would have thought start-stop-daemon takes care of everything... obviously it does not. Try trapping the SIGHUP signal in the Python script. Redirecting the output to a file or /dev/null may also be wise. — Frg
– Frg, Commented Mar 1, 2012 at 17:39

Neil · Accepted Answer · 2013-06-19 18:46:58Z

3

It's a long time since this question was asked, but I came across this situation today.

To start the process in the background, use

start-stop-daemon -Sbm --pidfile $PIDFILE --exec $DAEMON

To stop it:

start-stop-daemon -K --pidfile $PIDFILE

From the start-stop-daemon man page:

-b , -background

Force the daemon into the background. Some daemons don't create pidfiles, so a good trick is to get the daemon to run in the foreground, and use the this option along with -m , -make-pidfile to create a working pidfile. -m , -make-pidfile

Saves the pid of the daemon in the file specified by the -p, -pidfile option. Only useful when used with daemons that run in the foreground and forced into the background with the --b, -background option.

answered Jun 19, 2013 at 18:46

Neil

2,4381 gold badge21 silver badges29 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

wRAR · Accepted Answer · 2012-03-01 17:32:54Z

1

Try to remove & from your start-stop-daemon invocations. Also, you should read how to write proer initscripts because there are several other errors in your initscript.

answered Mar 1, 2012 at 17:32

wRAR

25.7k5 gold badges89 silver badges101 bronze badges

3 Comments

skoovill Over a year ago

the daemon still stops after i logout.

skoovill Over a year ago

wRAR is there any other way to run python script in background ?

wRAR Over a year ago

screen, nohup, & + disown etc. Anyway, the only proper way is to write a script properly as daemon and write a proper initscript.

Collectives™ on Stack Overflow

Python script as daemon in ubuntu

2 Answers 2

Comments

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related