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/kemi/#python-kemi-interpreter> says: 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 &lt;miconda(a)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(a)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.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda > >

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 *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 &lt;maratkin94(a)gmail.com&gt;om>: 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/kemi/#python-kemi-interpreter> 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 &lt;miconda(a)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(a)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 www.twitter.com/miconda -- www.linkedin.com/in/miconda