Lennart Poettering wrote:
When generating native unit files from legacy sysv scripts, we use
KillMode=process, which means we'll only kill the main process, and
nothing else. This choice was made since its behaviour comes closest
to classic SysV behaviour (since there the init system didn't kill any
auxiliary processes either).
Given it's 2019 it might be wise to just write a native unit file if
you want better control of this. Note that for native unit files we
use different defaults: there we kill everything by default.
You can also reuse the generated unit, but only change the KillMode=
setting, by creating a drop-in in
/etc/systemd/system/<myservice>.service.d/<something>.conf, and then
adding there:
[Service]
KillMode=control-group
Yes, Mantas answer brought me to the same solution. For me that's
everything I need to solve the problems with our init.d scripts I guess,
so thanks!
But let me underline: a SysV script which leaves processes around is
simply buggy. In sysv it was expected that scripts would clean up
properly on "stop", on their own. If you don't do that in your script,
then maybe fix that...
The only correct way to shut things down is with individual ordering
between units really, but that falls apart if you stick to historic
sysv semantics too much.
Totally agreed, but the problem are scripts like the ones for grid or
matlab that have 200 lines or do such weird things that you couldn't
do anything but write a unit more or less like the one systemd-sysv-generator
creates. I just have to deal with those, but the KillMode drop-in
does help enough.
Thanks for all the explanations!
cu,
Frank
--
Dipl.-Inform. Frank Steiner Web: http://www.bio.ifi.lmu.de/~steiner/
Lehrstuhl f. Bioinformatik Mail: http://www.bio.ifi.lmu.de/~steiner/m/
LMU, Amalienstr. 17 Phone: +49 89 2180-4049
80333 Muenchen, Germany Fax: +49 89 2180-99-4049
* Rekursion kann man erst verstehen, wenn man Rekursion verstanden hat. *
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