Server insists on wrong hostname

[Ben Morrow]

Quoth Kevin Oberman <rkoberman at gmail.com>:
> On Sat, Oct 11, 2014 at 9:33 AM, Christian Alge <lists at 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