[Samba] Why is S4 attempting to execute rndc when using *INTERNAL* DNS?

[Andrew Bartlett]

On Fri, 2017-01-13 at 14:15 -0500, Adam Williams wrote:
> On Sat, 2017-01-14 at 07:31 +1300, Andrew Bartlett wrote:
> > On Fri, 2017-01-13 at 13:07 -0500, Adam Tauno Williams via samba
> > wrote:
> > > My AD domain (SerNET S4 4.5.3) using S4's internal DNS, and
> > > always 
> > > has.  So why is it now constantly logging an error of -
> > >    [2017/01/13 12:53:00.152754,  0]  
> > > ../lib/util/util_runcmd.c:316(samba_runcmd_io_handler)
> > >      /usr/sbin/rndc: Failed to exec child - No such file or
> > > directory
> > >   - after attempting to add a 2008R2 DC.  I do not recall seeing
> > > this  error previously [not prior to 4.5.3].
> > 
> > I don't think this area has changed recently, but perhaps we now 
> > catch the error better.  I agree, this is a bit silly - it is
> > writing 
> > out a config file for bind 9.7, ie before we had the DLZ code.
> > The whole thing needs to be removed - those running bind9 with the
> > flatfile backend are unsupported anyway and probably don't want
> > Samba
> > dynamically updating configuration entries - they want things
> > locked
> > down.
> 
> But it should not prevent anything from working?

Nothing at all.  To kill the message just ensure there is a no-op
binary (/bin/true would be a great choice) pointed at by 'rndc
command'.

Thanks,

Andrew Bartlett

-- 
Andrew Bartlett                       http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba