Hello,

not sure I got right what is the issue and what would be a solution for it, but maybe you can leverage evrexec to create a child process and by that keep it in kamailio children list.

Cheers,
Daniel

On 13.09.22 19:15, Marat Gareev wrote:

Hello!

I'm trying to use app_python module to perform periodic actions.

This is a simple python code

def _update():

while True:

_action()

time.sleep(60)

class noop_handler:

def child_init(self, rank):

return 0

def ksr_request_route(self, msg):

return 1

def mod_init():

# signal.signal(signal.SIGTERM, signal.default_int_handler)

proc = multiprocessing.Process(target=_update)

# proc.daemon = True

proc.start()

ksr.notice('Forked process {} to update\n'.format(proc.pid))

return noop_handler()

After killing kamailio processes with SIGTERM signal (killall kamailio) I see zombie process.

And if I try to process the signal in daemon mode (see the comments in the snippet above), I get critical errors in the logs and still see processes:

0(37001) NOTICE: <core> [core/kemi.c:124]: sr_kemi_core_notice(): Forked process 37002 to update

1(37003) ERROR: <core> [core/udp_server.c:464]: udp_rcv_loop(): recvfrom:[4] Interrupted system call

Process Process-1:

Traceback (most recent call last):

File "/usr/lib64/python2.7/multiprocessing/process.py", line 258, in _bootstrap

self.run()

File "/usr/lib64/python2.7/multiprocessing/process.py", line 114, in run

self._target(*self._args, **self._kwargs)

File "/tmp/script.py", line 155, in _update

time.sleep(period)

KeyboardInterrupt

0(37001) ALERT: <core> [main.c:774]: handle_sigs(): child process 37002 exited normally, status=1

0(37001) INFO: <core> [main.c:802]: handle_sigs(): terminating due to SIGCHLD

1(37003) ERROR: <core> [core/udp_server.c:464]: udp_rcv_loop(): recvfrom:[4] Interrupted system call

8(37014) CRITICAL: <core> [core/pass_fd.c:277]: receive_fd(): EOF on 4

1(37003) ERROR: <core> [core/udp_server.c:464]: udp_rcv_loop(): recvfrom:[4] Interrupted system call

So, how I can kill child process by SIGTERM signal?

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