[Freeswitch-users] [freeswitch] <defunct> when using cmd="exec" in freeswitch.xml

[Michael Collins]

IIRC, 'fork' creates a child PID that stays around and waits for the parent
PID to die. (Don't quote me on that - wait for an expert to chime in.)

An alternative method would be to have a FS start script that launches your
make_my_vars.sh script and then launches FS with the appropriate cmd line
args. You could then drop the 'exec' cmd and then just keep the include
cmd.

-MC

On Thu, Mar 10, 2011 at 2:19 AM, Mitja Thomas <mitja.thomas1 at ewetel.de>wrote:

>  Hi there,
>
> we tried to set up the FreeSWITCH and other Applications, so that we can
> configure them easier and more centralised.
> Thus we defined some Environment Variables (using CentOS) which hold often
> used Configuration Parameter like MySQL IP or FS Event Socket IP.
> We tried to integrate these Env Variables into the FS conf files by
> executing a shell Skript in freeswitch.xml via cmd="exec" which prepares an
> conf file which we include into freeswitch.xml:
>
>   <X-PRE-PROCESS cmd="exec" data="sh conf/make_my_vars.sh"/>
>   <X-PRE-PROCESS cmd="include" data="my_vars.xml"/>
>
> This works as expected and the pre defined variables in my_vars can be
> accessed from the other config Files, except that when we start our
> FreeSWITCH  a zombie child process is spawned.
>
> # ps -eaf | grep free
> ippbx    22191 22190  4 09:41 pts/1    00:00:01
> /opt/app/voip/ippbx/bin/freeswitch -waste -nonat -hp
> ippbx    22197 22191  0 09:41 pts/1    00:00:00 [freeswitch] <defunct>
>
> What I wanna know is: Is this a FS missbehaviour or do we use this in a
> wrong way?
>
> make_my_vars.sh:
> F="conf/my_vars.xml"
> echo "<!-- Auto generated file for getting *NIX evironment variables -->" >
> $F
> echo "<include>" >> $F
>
> fs_ip=`printenv MY_FS_IP`
> if test -n "$fs_ip"
> then
>         echo '<X-PRE-PROCESS cmd="set" data="my_fs_ip='$fs_ip'"/>' >> $F
> fi
> ...
> echo "</include>" >> $F
>
> my_vars.xml (after FS startup):
> <!-- Auto generated file for getting *NIX evironment variables -->
> <include>
> <X-PRE-PROCESS cmd="set" data="my_fs_ip=***.***.***.***"/>
> ...
> </include>
>
> Regards
> Mitja
>
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