Re: NetworkManager-dispatcher killing my scripts

[Jeff Sadowski <jeff sadowski gmail com>]

Found a work around sending the task to "at now" completed it.
The following counts all the way to 24

<-------start of /etc/NetworkManager/
dispatcher.d/99-test script
#!/bin/bash
test()
{
 x=0
 while [ ${x} -lt 25 ];do
 sleep 1
 echo ${x} > /tmp/test
 let x=${x}+1
 done
}
if [ "$1" = "test" ];then
 test
else
 echo "$0 test" | at now
fi
<------end of script

On Tue, Jul 30, 2013 at 2:04 PM, Jeff Sadowski <jeff sadowski gmail com> wrote:
> I tried having it recall itself as follows but it is still getting
> killed now after 9 seconds.
>
> updated script
> <-------start of /etc/NetworkManager/dispatcher.d/99-test script
> #!/bin/bash
> test()
> {
>  x=0
>  while [ ${x} -lt 25 ];do
>  sleep 1
>  echo ${x} > /tmp/test
>  let x=${x}+1
>  done
> }
> if [ "$1" = "test" ];then
>  test
> else
>  exec /bin/bash -c "$0 test" &
> fi
> <------end of script
>
> On Mon, Jul 29, 2013 at 10:51 PM, Dan Williams <dcbw redhat com> wrote:
> > On Mon, 2013-07-29 at 22:35 -0600, Jeff Sadowski wrote:
> > > Is there any way to have it launch maybe another script that can take
> > > as long as it needs?
> > > I thought putting the script in the background would allow it to run
> > > till finished but it is still getting killed.
> >
> > You might be able to get around it if you exec a second script; the
> > dispatcher only kills the PID that it originally spawned.
> >
> > Dan
> >
> > > On Mon, Jul 29, 2013 at 10:21 PM, Dan Williams <dcbw redhat com> wrote:
> > > > On Mon, 2013-07-29 at 09:35 -0600, Jeff Sadowski wrote:
> > > > > I created a simple script to show my problem.
> > > > > <-------start of /etc/NetworkManager/dispatcher.d/99-test script
> > > > > test()
> > > > > {
> > > > > x=0
> > > > > while [ ${x} -lt 25 ];do
> > > > > sleep 1
> > > > > echo ${x} > /tmp/test
> > > > > let x=${x}+1
> > > > > done
> > > > > }
> > > > > test &
> > > > > <------end of script
> > > > >
> > > > > the script gets killed after 8 seconds ie:
> > > > > > cat /tmp/test
> > > > > 8
> > > > > >
> > > > >
> > > > > I don't see any error messages in /var/log/message pertaining to it.
> > > > >
> > > > > Is there a way to get my script to not get killed?
> > > > > Maybe a way to externally call my script using dispatcher?
> > > >
> > > > Scripts actually get 3 seconds to complete.  They aren't currently
> > > > expected to run for long, especially on network disconnection, because
> > > > the network is already gone.  You can run the dispatcher with debug mode
> > > > like:
> > > >
> > > > /usr/libexec/nm-dispatcher.action --debug --persist
> > > >
> > > > The daemon currently doesn't block waiting on scripts, but there have
> > > > been discussions to make it do so.  Which would make this problem even
> > > > more acute, since network changes could block on long-running scripts.
> > > >
> > > > Dan