Childprocess of a subprocess

[amodpandey]

Hi,

I run a script which runs in foreground. This script executes a java child process. When I terminate my script (Ctrl+C) the child process gets terminates and then I get the prompt back.

I expected the same behavior with supervisord. I used TERM and QUIT signal. When stop is called only the script is terminated and the child java process is left running under process id 1.

I did read this 'If a process created by supervisord creates its own child processes, supervisord cannot kill them.'

But why it is not possible to send the term signal to the child process. Getting behavior similar to what we see with the terminal.

kill -- -

This might have been answered somewhere but I could not find one.

supervisorctl version

3.0a8

Regards
Amod

[amodpandey]

Changing the script to run java through exec solved my problem. But it would nice to have answer for the above question.

[mnaberez]

But why it is not possible to send the term signal to the child process.

The stopasgroup and killasgroup options added in Supervisor 3.0b1 will send the signal to the process group. The manual page describes these options.

[amodpandey]

I do not see the desired behavior

Version

supervisord -v

3.1.3

Conf

stopsignal=TERM
stopwaitsecs=10
stopasgroup=true

Process

root 19127 1 0 14:34 ? 00:00:00 /usr/bin/python /usr/bin/supervisord -c /etc/supervisord.conf
user1 19356 19127 0 14:35 ? 00:00:00 /bin/sh /usr/bin/catalina.sh run
user1 19367 19356 99 14:35 ? 00:00:06 /usr/bin/java BLAH

Stop

supervisorctl stop myapp

Process exists

user1 19367 1 2 14:35 ? 00:00:07 /usr/bin/java BLAH

Am I missing anything?

Thanks for your help.

[mnaberez]

Please ask questions about using Supervisor on the supervisor-users mailing list. We use this issue tracker for bugs in Supervisor itself.

[apuppy]

But why it is not possible to send the term signal to the child process.

The stopasgroup and killasgroup options added in Supervisor 3.0b1 will send the signal to the process group. The manual page describes these options.

Using the following two lines and child process killed properly. Thank you.

stopasgroup=true
killasgroup=true