:: Re: [DNG] Sysvinit script doesn't t…
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Szerző: Arnt Karlsen
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Címzett: dng
Tárgy: Re: [DNG] Sysvinit script doesn't trigger on boot
On Fri, 1 Dec 2023 05:29:29 -1000, Joel wrote in message
<20231201152929.klvfffug5qipwxeo@sprite>:

> On Fri, Dec 01, 2023 at 03:58:30AM -0700, Bob Proulx via Dng wrote:
> > Joel Roth via Dng wrote:
> > > But it doesn't start during system boot.
> >
> > > $ ls /etc/rc2.d | grep firewall
> > > S02firewall
> >
> > I think S02 is too early. That would put it in parallel with eudev
> > coming online on my system.
>
> > If we look at the shorewall init script we will see it says this.
> >
> >     # Required-Start:    $network $remote_fs
> >     # Required-Stop:     $network $remote_fs
> >     # Default-Start:     S
> >     # Default-Stop:      0 1 6  
> > > Which leads me to believe something similar would be good for
> > > your  
> > firewall script too.  I would modify to the same thing.  That will
> > move it a little bit later in the boot process and after the network
> > devices exist, but in single user mode before any daemons have been
> > started so nothing is listening on the network yet.  

>
> Good idea. Any idea what $remote_fs would serve in the above
> example? Any network file system would depend on having
> a network, right?
>
> The 'S' in Default-Start refers to single-user mode, does it
> not? I vaguely remember single-user mode being synonymous
> with run-level 2, but read here that single-user mode is
> run-level 1.
>
> https://www.geeksforgeeks.org/run-levels-linux/


..this above describes Red Hat style runlevels.

.. we and Debian use run-level 2 as default, by default. ;o)
Details in the RUNLEVELS chapter of 'man init'.

> > Just as commentary rather than bring this online during boot time
> > statically which is really meant for static things this might be
> > better served by running from the /etc/network/if-*.d/ dynamic
> > triggers, or their equivalent with whichever manager you are
> > running, which runs event driven after the interface is brought
> > online. Assuming that your Wi-Fi is dynamic using a wifi manager.
> > If it is static then of course the boot time is fine.
>
> So, reading the docs for /etc/network/interfaces, I see that
> I can put `post-up firewall` in the stanza for, say wlan0,
> that will trigger the script when the wifi manager brings up
> wlan0.
>
> Interestingly, from a security standpoint, if the script
> fails, the interface will still remains up, although it will
> be marked as not configured.
>
> Thanks for the reply!
>
> >
> > Bob
> > _______________________________________________
> > Dng mailing list
> > Dng@???
> > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
> >
>



--
..med vennlig hilsen = with Kind Regards from Arnt Karlsen
...with a number of polar bear hunters in his ancestry...
Scenarios always come in sets of three:
best case, worst case, and just in case.