Date: Sat, 11 Oct 2014 23:22:45 +0100 From: Ben Morrow <ben@morrow.me.uk> To: Christian Alge <lists@burnus.net>, freebsd-stable@freebsd.org Subject: Re: Server insists on wrong hostname Message-ID: <20141011222243.GA23187@anubis.morrow.me.uk> In-Reply-To: <CAN6yY1sH4tYEXpPDvRc_w65bjtLK6pfXsrZr13rApSKqHQtzEw@mail.gmail.com> References: <5438F7A4.4070908@burnus.net> <54392A57.7020704@sorbs.net> <54393142.4050005@burnus.net> <5439326B.3070508@sorbs.net> <54393C76.7090702@burnus.net> <54393DBD.4030602@sorbs.net> <5439485F.4000002@burnus.net> <54394AF1.7000807@sorbs.net> <54395BC2.7090204@burnus.net>
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Quoth Kevin Oberman <rkoberman@gmail.com>:
> On Sat, Oct 11, 2014 at 9:33 AM, Christian Alge <lists@burnus.net> wrote:
>
> > > Well, a rather "brute force" approach would be:
> > >
> > > grep -r 'Freie Energie' /etc/
> > >
> > > (Mind, you may need root access to avoid "permission denied" messages
> > > -- or you culd just ignore them, if you are confident that the files
> > > in question are sufficiently unlikely to be at fault.)
> > >
> > > If that fails, I have a possible other approach in mind, but it's a bit
> > > of a mess, so I'd rather not even try to describe it unless nothing else
> > > works.
> >
> > That returns nothing.
>
> I suspect some script is executing a hostname(1), but this is just
> guessing. I'd suggest adding "hostname" in a few places in startup scripts
> (/etc/rc.d and /usr/local/etc/rc.d). If you see which script is doing it,
> use rcorder(8) to see what scripts could be triggering it.
You could also try renaming /bin/hostname to /bin/hostname.real and
putting something like this in /bin/hostname:
#!/bin/sh
if [ $# -gt 0 ]
then
echo "PID: $$" >>/tmp/hostname.log
echo "ARGS: $*" >>/tmp/hostname.log
/bin/ps axd >>/tmp/hostname.log
fi
exec /bin/hostname.real "$@"
Remember to put it back afterwards.
(It ought to be possible to do this by using dtrace to catch calls to
set the kern.hostname sysctl, but I don't know how to do that.)
Ben
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