difference between bind-9.8 and bind-9.9

[Charles Tryon]

On Mon, Jun 4, 2012 at 5:04 PM, Günter Kukkukk <linux at kukkukk.com> wrote:

> Am Montag, 4. Juni 2012, 21:44:48 schrieb Charles Tryon:
> > I'm having some problems in my testing environment with the default
> library
> > version number for bind (dlz_dlopen: incorrect version 1 should be 2 in
> > '/usr/local/samba/lib/bind9/dlz_bind9.so' in /var/log/messages).  I've
> hit
> > this several times because I have a couple of different test environments
> > where I'm updating from git on a fairly regular basis.  My somewhat brute
> > force way to fix then problem has simply been to re-build and install the
> > correct bind-9.x, but this clearly isn't a very good long term solution.
> >
> > What I'm looking for, but haven't found yet is any way to specify, either
> > on the configure line or when running the provisioning step, which
> version
> > of the library you wish to use.  In particular, I am currently building
> on
> > a new Fedora17 base, which includes bind9.9 by default, so I want to be
> > able to run with that version.  Is there any standard way to specify the
> > target version, other than changing the define in
> > source4/dns_server/dlz_minimal.h?
>
> Hi Charles,
>
> in the recent git tree, when you look at the file
>  ./source4/dns_server/wscript_build:
> ----------
> ...
> # a bind9 dlz module giving access to the Samba DNS SAM
> bld.SAMBA_LIBRARY('dlz_bind9',
>                  source='dlz_bind9.c',
>                  cflags='-DBIND_VERSION_9_8',
>                  private_library=True,
>                  link_name='modules/bind9/dlz_bind9.so',
>                  realname='dlz_bind9.so',
>                  install_path='${MODULESDIR}/bind9',
>                  deps='samba-hostconfig samdb-common gensec popt',
>                  enabled=bld.AD_DC_BUILD_IS_ENABLED())
>
> bld.SAMBA_LIBRARY('dlz_bind9_9',
>                  source='dlz_bind9.c',
>                  cflags='-DBIND_VERSION_9_9',
>                  private_library=True,
>                  link_name='modules/bind9/dlz_bind9_9.so',
>                  realname='dlz_bind9_9.so',
>                  install_path='${MODULESDIR}/bind9',
>                  deps='samba-hostconfig samdb-common gensec popt',
>                  enabled=bld.AD_DC_BUILD_IS_ENABLED())
> --------------
> you'll notice, that two dlz related dynlibs are build now.
>
> When you specify --dns-backend=BIND9_DLZ during the configure step, these
> 2 dynlibs are installed to e.g.
>   /usr/local/samba/lib/bind9/dlz_bind9.so
>   /usr/local/samba/lib/bind9/dlz_bind9_9.so
>
> and the file
>   /usr/local/samba/private/named.conf
> is generated, which should be included into your /etc/named.conf.
>
> It contains:
> # This DNS configuration is for BIND 9.8.0 or later with dlz_dlopen
> support.
> #
> # This file should be included in your main BIND configuration file
> #
> # For example with
> # include "/usr/local/samba/private/named.conf";
>
> #
> # This configures dynamically loadable zones (DLZ) from AD schema
> # Uncomment only single database line, depending on your BIND version
> #
> dlz "AD DNS Zone" {
>    # For BIND 9.8.0
> #    database "dlopen /usr/local/samba/lib/bind9/dlz_bind9.so";
>
>    # For BIND 9.9.0
>     database "dlopen /usr/local/samba/lib/bind9/dlz_bind9_9.so";
> };
>
> So to change between bind-9.8.x and 9.9.x, one has to edit this file
> manually.
>
> Cheers, Günter
>


Great!  That makes sense.

Thanks!


-- 
    Charles Tryon
_________________________________________________________________________
  “Risks are not to be evaluated in terms of the probability of success,
but in terms of the value of the goal.”
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