[systemd-devel] how to run a script which takes about 30 seconds before shutdown

[Lennart Poettering]

On Fri, 11.11.16 22:31, zerons (sironhide0null at gmail.com) wrote:

> >> Hi everyone.
> >>
> >> Everyday, I need to do something like `git pull` after system
> >> bootup and `git push` before shutdown. I am using Ubuntu 16.04.
> >> I have tried to put some script into /etc/rc0.d/, /etc/rc6.d/,
> >> each time the script runs, the network has been stopped, so I 
> >> turn to systemd.
> >>
> >>
> >> === Here is a test .service file.
> >> [Unit]
> >> Description=test systemd
> >> Conflicts=reboot.target
> >> After=network-online.target
> >> Wants=network-online.target
> > 
> > If you only care about shutdown, then After=network.target shouls
> > suffice, as long as your network management service properly orders
> > itself against that. See systemd.special(7) for details on this.
> > 
> > Note that systemd only provides a number of hooks we document
> > semantics for, but it's up to downstream packages to actually honour
> > these correctly.
> > 
> > Lennart
> > 
> 
> Thanks, I have tried this. When this script runs, `ifconfig`-> `ping`
> -> `ifconfig`, when `ping` runs, the network is unreachable, packet 87%
> loss(only the first one received), then the net interface has no
> "inet addr". I couldn't figure this out:(

That suggests your network management service of choice is not
ordering itself properly against network.target. Please file a bug
against it.

Lennart

-- 
Lennart Poettering, Red Hat