Experimental Physics and
Industrial Control System

Mazanec Tomáš <[email protected]> · Tue, 6 Feb 2018 14:41:50 +0000

Hi

If I understood your aims correctly:
- you can let systemd to kill also procServ (ref. to: man systemd.kill) via systemd service configuration,
- you can send control character, e.g.: ^Q, to procServ to quit itself, via shell script defined in 'ExecStop='  of the service,
then, in both cases, systemd may restart your service , if configured so.

The second option is based on procServControl (DLS Controls). 
With ASCII control codes,
https://en.wikipedia.org/wiki/C0_and_C1_control_codes
, one can send any of procServ control commands to its management port, e.g:

# send ^Q to procServ
/bin/sh -c "/bin/echo -e '\x11' | /bin/nc -w 1 localhost 20000"

Cheers,
Tomas

________________________________________
Od: [email protected] [[email protected]] za uživatele Hinko Kocevar [[email protected]]
Odesláno: 6. února 2018 15:08
Komu: [email protected]
Předmět: procServ under systemd service

Hi,

I want to run procServ 2.7.0 that startd the IOC with systemd. I have
the .service file and things seems to behave quite nice so far.

What I need now is that after procServ child dies/exits control is
returned all the way to systemd service because I want to execute a
command after IOC has stopped.

Is there a way to tell procServ to exit after child has finished?
Systemd service would of course start procServ back up.

Thanks,
Hinko

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System