Process stops after start in cron

Question

I want to start webrtc2sip from cron:

* * * * * root /taafs/webrtc2sip/webrtc2sip --config=/taafs/webrtc2sip/config.xml >> /var/log/webrtc2sip.log 2>&1

When cron runs, I see output in /var/log/webrtc2sip.log , but

ps aux | grep webrtc2sip

shows nothing.

When I run command from my root bash it shows absolutely the same output, and shows in ps aux! Also, when I install env from cron to new bash, and start command from this bash, it works(displayed in ps)! So the reason is not environment, but what?

What does "when I install env from cron to new bash" mean exactly? Does the command work if you run `env -i sh -c '/taafs/webrtc2sip/webrtc2sip --config=/taafs/webrtc2sip/config.xml >> /var/log/webrtc2sip.log 2>&1'`? — Etan Reisner, Jul 24 '15 at 13:56
This means accepted answer from this http://stackoverflow.com/questions/2135478/how-to-simulate-the-environment-cron-executes-a-script-with# . And yes, your command also works. — Ivan Borshchov, Jul 24 '15 at 14:08
Does `env -i sh -c 'nohup /taafs/webrtc2sip/webrtc2sip --config=/taafs/webrtc2sip/config.xml >> /var/log/webrtc2sip.log 2>&1 — Etan Reisner, Jul 24 '15 at 14:16
Then that's a problem of the program when it doesn't have either standard input or a controlling terminal. You get to figure out what. — Etan Reisner, Jul 24 '15 at 14:26
Which file (full path) do you have changed to insert your cronjob? — Cyrus, Jul 24 '15 at 16:53
problem solved, now I use screen to start my program, so it think that STDIN present. Thanks to Etan Reisner for finding issue. — Ivan Borshchov, Jul 27 '15 at 09:30

score 1 · Answer 1 · answered Sep 05 '15 at 15:31

I had a similar issue, so I resorted to creating a small patch to make console optional when starting webrtc2sip by adding a new argument, --without-console.

It is documented here: http://marcelog.github.io/articles/starting_webrtc2sip_as_service.html and the patch is available as a gist here: https://gist.github.com/marcelog/47ef364b43c67f9f359d

I hope it helps, it's been working great for me so far, and I use daemontools to supervise the process.

Best!

Process stops after start in cron

1 Answers1