Re: [SR-Users] Kill child process created by app_python module

Hello, not a KEMI python expert, but what you are trying to do (adding a process to Kamailio and then also maintaining it during run-time) could be probably better done from the C module level. You can look to the several modules that starts their own children worker processes to get an idea how to do it. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com<https://gilawa.com/> From: sr-users &lt;sr-users-bounces(a)lists.kamailio.org&gt; On Behalf Of Marat Gareev Sent: Wednesday, October 26, 2022 12:19 PM To: miconda(a)gmail.com Cc: Kamailio (SER) - Users Mailing List &lt;sr-users(a)lists.kamailio.org&gt; Subject: Re: [SR-Users] Kill child process created by app_python module Hello again, Any advice will be appreciated. Thanks чт, 15 сент. 2022 г. в 18:10, Marat Gareev <maratkin94@gmail.com<mailto:maratkin94@gmail.com>>: Hello Daniel, Probably, the process is not killed, because the child processes of the python module are not included in the kamailio children list. How can I register an event route in KEMI script? Doc<https://kamailio.org/docs/tutorials/devel/kamailio-kemi-framework/ke… says: event route callback - the name of the Python function to be executed instead of module specific event_route blocks is provided via event_callback parameter of that module but evrexec<https://www.kamailio.org/docs/modules/devel/modules/evrexec.html… doesn't have an event_callback parameter. I tried to set up exec parameter (_update is Python function) modparam("evrexec", "exec", "name=_update;workers=1;") and got warning WARNING: evrexec [evrexec_mod.c:180]: evrexec_process(): empty event route block [_update] ср, 14 сент. 2022 г. в 16:21, Daniel-Constantin Mierla <miconda@gmail.com<mailto:miconda@gmail.com>>: 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? __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla -- www.asipto.com<http://www.asipto.com> www.twitter.com/miconda<http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda<http://www.linkedin.com/in/miconda>