> On 11/07/2011 08:06 AM, Roberto De Ioris wrote:
>>
>>> On 11/06/2011 08:23 PM, Roberto De Ioris wrote:
>>>>
>>>>> On 11/06/2011 07:58 AM, Roberto De Ioris wrote:
>>>
>>>>>
>>>>> --attach-daemon works file.
>>>>>
>>>>
>>>> attach-daemon create a new process group, so if you call fork() and
>>>> simply
>>>> run code the children will be killed too.
>>>>
>>>> How do you create children ? If you call setsid(), a new process group
>>>> will be created so uWSGI will not be able to kill them.
>>>
>>>
>>> I naively used sobprocess.Popen
>>> # Simplified code snippet
>>> import subprocess
>>> log_file = open( 'stdout.log', 'wb')
>>> err_log_file = open('stderr.log', 'wb')
>>> cmd = [ 'cmd' , 'param1', 'param2') ]
>>> proc = subprocess.Popen(cmd, stdout=log_file, stderr=err_log_file)
>>> proc.wait()
>>>
>>
>> Looks good.
>> #!/usr/bin/env python
> import os, sys
> import subprocess
>
> os.chdir( os.path.dirname(__file__) )
>
> log_file = open('spawn_test.log', 'wb')
> err_log_file = open('spawn_test_err.log', 'wb')
> proc = subprocess.Popen([ './child.py' ] , stdout=log_file,
> stderr=err_log_file)
> proc.wait()
> Check with ps if the spawned processes are all under the same process
> group.
>> Maybe some of your children call setsid()/setpgroup()
>>
>
> Everything looks fine in my opinion. However the child process doesn't
> die :-( .
>
> I have two simple python scripts:
> #!/usr/bin/env python
> # #################### the daemon ######
> import os, sys
> import subprocess
>
> os.chdir( os.path.dirname(__file__) )
>
> log_file = open('spawn_test.log', 'wb')
> err_log_file = open('spawn_test_err.log', 'wb')
> proc = subprocess.Popen([ './child.py' ] , stdout=log_file,
> stderr=err_log_file)
> proc.wait()
>
> #!/usr/bin/env python
> # ################ The child
> import sys, time
> for i in range(200):
> print i
> sys.stdout.flush()
> time.sleep(3)
>
> # ######### The uwsgi xml file
> <uwsgi>
> <uid>nginx</uid>
> <gid>nginx</gid>
> <socket>127.0.0.1:1234</socket>
> <master />
> <workers>8</workers>
> <attach-daemon>/path/to//spawn_test.py</attach-daemon>
> <pidfile>/var/run/uwsgi/uwsgi.pid</pidfile>
> <daemonize>/var/log/uwsgi/uwsgi.log</daemonize>
> <env>APP_VAR=var</env>
> <pp>/my_ppath</pp>
> <virtualenv>/myvirtenvn</virtualenv>
> <module>my.module</module>
> </uwsgi>
>
> # my ps command
> ps axo 'user,group,euser,egroup,pid,pgid,cmd' | grep nginx
>
> # PS BEFORE STARTING:
> Nothing
>
> # AFTER STARTING
> . . .
> nginx nginx nginx nginx 5784 5775 /virtenv/bin/uwsgi -x
> /etc/uwsgi/uwsgi-conf.xml # this line multiple times
> nginx nginx nginx nginx 5785 5775 python
> /path_to/spawn_test.py
> nginx nginx nginx nginx 5786 5775 python ./child.py
>
here i see all of the processes under the same pgid (5775).
Which uWSGI version are you using ?
--
Roberto De Ioris
http://unbit.it
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