Newbie Questions
Andy Shellam (Mailing Lists)
andy.shellam-lists at mailnetwork.co.uk
Fri Dec 8 17:03:12 UTC 2006
Here's my views in-line below:
dev_null at pubbox.net wrote:
> 1) Should the root hint zone be always needed? In fact I commented these
> four lines and bind seems work normally too:
>
> //zone "." in {
> // type hint;
> // file "db.cache";
> //};
>
Since bind-9.3.2, I've never needed the root hints on my DNS servers.
> 2) The rndc command's help info say:
>
> stop Save pending updates to master files and stop the server.
> halt Stop the server without saving pending updates.
>
> So, what's the meanings of "pending updates" ?
>
Pending updates, I believe, are when you modify a zone on-the-fly
(dynamic updates), it saves a journal file but doesn't actually write
the physical changes to disk immediately.
A pending update has been applied to the zone, but not yet written to
the zone's file. A 'stop' will flush the journal to disk, whereas a
'halt' will cause you to lose un-committed changes.
(I think!)
> 3) After install bind,why I need to create named.conf & rndc.key by hand?
> Why bind doesn't create the default files for them like Apache?
>
I personally don't believe there is such thing as a "default" config for
bind. For example, are you using it as a caching-only server, as a
slave for one/multiple zones, as a primary for one/multiple zones?
There's a long list of uses for bind and your configuration depends on
your use. Also regarding the key file, it's specific to the machine, if
you shipped a standard key file out with bind, a lot of people would
have the same key file and it'd be a big security risk.
> 4) What's the use of port 953 running on localhost?
>
I believe this is the port that rndc uses to connect to bind.
Andy Shellam
NetServe Support Team
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