Op 17 apr. 2013, om 17:20 heeft Lennart Poettering <lenn...@poettering.net> het
volgende geschreven:
> On Wed, 17.04.13 17:09, Lennart Poettering (lenn...@poettering.net) wrote:
>
>>
>> On Tue, 16.04.13 09:11, Koen Kooi (k...@dominion.thruhere.net) wrote:
>>
>>> Hi,
>>>
>>> To help with flashing the onboard eMMC of a 100000 boards I'm using
>>> systemd-nspawn to run package postinstall scripts that generate UUIDs and
>>> some other things and it's working great for that! Every board now has a
>>> unique value in /etc/machine-id instead it being empty and systemd
>>> randomizing it on startup.
>>>
>>> What doesn't work however is something like this:
>>>
>>> systemd-nspawn -D ${PART2MOUNT} /usr/bin/timedatectl set-timezone
>>> Europe/Paris
>>>
>>> or this:
>>>
>>> systemd-nspawn -D ${PART2MOUNT} /usr/bin/hostnamectl set-hostname
>>> BeagleBoneBlack
>>>
>>> I know I can run the lowlevel 'ln -sf <zoneinfo> /etc/timezone' or echo the
>>> name into /etc/hostname, but I'd like to use the *ctl commands because they
>>> work and have error handling built-in.
>>> it looks like I would need -b to get the *ctl commands to work, but -b
>>> doesn't support running single commands and exiting.
>>
>> timedatectl is just a frontend to timedated. So, without running
>> timedated inside of the container this is not going to be easy to do.
>
> Ah, I missed that you'd actually be OK with booting up the whole thing
> for this command... You'd just need a nice way to run something after
> boot-up is complete, and that immeidately shuts down the container
> afterwards, right?
Exactly!
> Hmm, here's an idea:
>
> we could add a generator to systemd which looks for "systemd.run=" or so
> on the kernel cmdline and simply generates throw-away unit files from
> that, that runs the specified command(s) and triggers a shutdown
> afterwards... Would that work for you?
>
> i.e. you'd then call:
>
> systemd-nspawn -bD /srv/foobar \
> systemd.run='/usr/bin/timedatectl set-timezone Europe/Paris' \
> systemd.run='/usr/bin/timedatectl set-hostname BeagleBoneBlack'
>
> and so on...
>
> I think that would be reasonably pretty?
And it totally works for my usecase as well!
regards,
Koen
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