On Mon, Jan 04, 2016 at 05:13:55PM -0700, Sathyan Arjunan wrote:
> Recently, I updated my bind from 9.9.5 to 9.9.8-P2 from then I seen
> problems with me named configuration. Interestingly, I seen this problem
> only on my slaves NOT on Master DNS.
>
> I am using multiple zones pointing to a same file. This configuration has
> been in place for nearly 10 years with no issues...
It's actually an error and always has been. Having named write to the
same file for multiple zones is risky; they can step on each other and
cause load failures later. The only change is that named will now
prevent you from making this mistake.
> Zone config on Master: ###No issues with Master###
>
> zone "domain1.com." {type master; file "db.file-1"; };
> zone "domain2.com." {type master; file "db.file-1"; };
> zone "domain3.com." {type master; file "db.file-1"; };
On the master server, named doesn't write to zone files (unless the
zone is dynamically updatable) so this isn't an error.
> zone "domain1.com." {type slave; file "db.file-1"; masters { x.x.x.x; };
> allow-query { any; }; };
> zone "domain2.com." { type slave; file "db.file-1"; masters { x.x.x.x; };
> allow-query { any; }; };
> zone "domain3.com." { type slave; file "db.file-1"; masters{ x.x.x.x; };
> allow-query { any; }; };
>
> Below is the errors i seen from named on my slave dns
>
> : named.conf:584: writeable file 'db.file-1': already in use: named.conf:194
On a slave server, named transfers the zone from elsewhere and writes a
copy into a local file. These all need to be different files.
> Please advise...
Change the filenames on the slave, or just don't have a "file" option
in the slave zone configuration.
--
Evan Hunt -- e...@isc.org
Internet Systems Consortium, Inc.
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