Wildcards and the include directive?

[Alfie John]

Hi guys,

I've looked hard but can't find any reference to using wildcards inside
an include directive. Does this feature exist in 9?

I've found this setup quite useful for other services like Apache etc.
What I want to do is be able to configure multiple zones by something
like:

include "/etc/bind/sites-enabled/*"

This way, I can add/remove zones on the fly with ln and rm, instead
of resorting to sed/awk/perl in order to modify named.conf.

Alfie

[Mark Andrews]

Named supports adding and removing zones via rndc.

rndc addzone ....
rndc delzone ....

> Alfie
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[SM]

At 00:29 24-01-2012, Alfie John wrote:
>I've looked hard but can't find any reference to using wildcards inside
>an include directive. Does this feature exist in 9?

http://ftp.isc.org/isc/bind9/cur/9.8/doc/arm/Bv9ARM.ch06.html#id2575504

Regards,
-sm

[Jan-Piet Mens]

> include "/etc/bind/sites-enabled/*"

That won't work.

What you could do though is to create the content of the file you're
including, which ought to solve your problem.

cd /var/path
ls > /etc/bind/sites-enabled.include

And then in named.conf [ include "/etc/bind/sites-enabled.include" ]

-JP

[Alfie John]

Hi Mark,

On Tue, Jan 24, 2012 at 07:48:25PM +1100, Mark Andrews wrote:
> Named supports adding and removing zones via rndc.
>
> rndc addzone ....
> rndc delzone ....

Thanks for the pointer. I didn't know about the rndc commands (the man
pages say nothing). However, looking at the online documentation it says
that addzone will add it to the config files. But after running a test,
all this does is add it to the cache. So does this would mean that every
time the cache is purged, I would have to run addzone again?

Alfie

[Alfie John]

Hi SM,

Yeah, I've read all that but that doesn't help me with what I want.

Alfie

[Alfie John]

Hi Jan-Piet,

On Tue, Jan 24, 2012 at 09:58:49AM +0100, Jan-Piet Mens wrote:
> What you could do though is to create the content of the file you're
> including, which ought to solve your problem.
>
> cd /var/path
> ls > /etc/bind/sites-enabled.include
>
> And then in named.conf [ include "/etc/bind/sites-enabled.include" ]

That's actually a nice hack... I like it.

On a more general note, do other people see wildcard includes useful or
is it just me? Would a patch be accepted for this feature or is my
thinking flat-out wrong?

Alfie

[Jan-Piet Mens]

> the online documentation it says
> that addzone will add it to the config files. But after running a test,
> all this does is add it to the cache. So does this would mean that every
> time the cache is purged, I would have to run addzone again?

No. Zones are added to / removed from a .nzf "cache" which is created
dynamically by named. I've got a tiny writeup at [1].

-JP

[1] http://jpmens.net/2010/10/04/dynamically-add-zones-to-bind-with-rndc-addzone/

[Alfie John]

On Tue, Jan 24, 2012 at 10:55:31AM +0100, Jan-Piet Mens wrote:
> > the online documentation it says
> > that addzone will add it to the config files. But after running a test,
> > all this does is add it to the cache. So does this would mean that every
> > time the cache is purged, I would have to run addzone again?
>
> No. Zones are added to / removed from a .nzf "cache" which is created
> dynamically by named. I've got a tiny writeup at [1].

Cool. Thanks for the link.

Alfie

--
Alfie John
http://h4c.kr