Re: Run script at boot time
On 20/03/13 19:24, Joe wrote:
> On Wed, 20 Mar 2013 14:53:09 +0000
> Tony van der Hoff <tony@vanderhoff.org> wrote:
>
>> On 20/03/13 14:29, Adam Wolfe wrote:
>>> I'd go with /etc/rc.local
>>> That's what it is for.
>>>
>>>
>>> On 03/20/2013 10:23 AM, Tony van der Hoff wrote:
>>>> Hi,
>>>>
>>>> Running Squeeze, I would like to run a script
>>>> (ltsp-update-sshkeys) on each system boot.
>>>>
>>>> Where would I place a link to such a script; /etc/init.d hardly
>>>> seems appropriate? I'm guessing it needs to be run after
>>>> networking has been set up in order to correctly generate the ssh
>>>> keys for the chroot.
>>>>
>>>> I don't really understand the boot sequence nowadays. Any advice
>>>> appreciated.
>>>>
>
> If you just need to run something at boot *after* particular things are
> done, and it doesn't matter what else has been done, this is the best
> way.
>
<snip useful information re init.d>
Unfortunately, that solution didn't seem to work.
Indeed, in this instance, it doesn't matter when the script is run,
except that the network must be running, so on the face of it, rc.local
would fit the bill.
I placed the line /usr/sbin/ltsp_update_sshkeys in /etc/rc.local, but
after I rebooted, I needed to run it manually to set the host keys. I
don't know whether the utility didn't run, or didn't run at the right
time, or failed.
Perhaps I should explain a bit about what I'm trying to achieve. LTSP is
a thin-client server for Linux. After boot-up, the clients communicate
over an ssh tunnel with the server, using a key-based authentication
mechanism. After certain upgrades, it seems that these keys need
resetting, for which LTSP provides the aforementioned utility.
I don't understand why I need to run it, as the server has a static ip
address, but some kernel upgrades also affect it. After a reboot, the
terminal users start moaning about not being able to log in, and I have
to run (as root) the utility. This is not always convenient, resulting
in some downtime.
My imagined solution was to run the utility after each boot-up, but as
you see, no such luck. Ideally I'd prefer to fix the underlying need to
update the host keys, but I've no idea where to start.
Cheers,
--
Tony van der Hoff | mailto:tony@vanderhoff.org
Buckinghamshire, England |
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