BIND statistics

[Mark Andrews]

> On 27 Aug 2024, at 06:04, Havard Eidnes via bind-users <bind-users at lists.isc.org> wrote:
> 
>> On Mon, Aug 26, 2024 at 06:05:19PM +0200, Havard Eidnes via bind-users wrote:
>>> Thanks.  I found it, and it's more than a little embarassing.
>>> 
>>> This is what you get when not building with --with-libxml2: an
>>> "un-rendered" xsl file as a result, in essence just the content
>>> of bin/named/xsl.c.  And this happened because I wasn't paying
>>> attention to what options were turned on by default for the
>>> package I was putting together.  "Surely stats is on by default!"
>>> Not so.  (Well, I didn't even think it was optional.)  Lesson
>>> learned.
>> 
>> It *is* on by default, if it can find libxml2. Does yours live in
>> a nonstandard location?
> 
> Time for more confessions.
> 
> This is in NetBSD's pkgsrc, which only builds with explicitly
> "buildlinked" libraries, so that build dependencies are
> explicitly declared, and not automatically picked up from those
> you just accidentally happen to have installed on the build host.
> What I had overlooked was that I in /etc/mk.conf needed
> 
> PKG_OPTIONS.bind+=      bind-xml-statistics-server
> 
> It's another matter whether this one should default to "on" in
> the package itself -- I'm leaning in that direction, but need to
> discuss with some others before I change the default.  And I also
> need the "dnstap" option in my deployment, so I need a custom
> build anyway.  Like I said, "lesson learned".
> 
>> Perhaps, if libxml2 and libjson-c are both unavailable, we should
>> disable statistics-channels in the configuration - at least that way
>> the problem would've been easier to figure out.
> 
> Right, I was sort of thinking in that direction as well, but
> would not be too insistent on something along those lines.
> Perhaps return a web page saying "built without both libjson-c
> and libxml2, so nothing to see here"?

A simple “No such url” will do.  See https://gitlab.isc.org/isc-projects/bind9/-/merge_requests/9423

Also if you ask for http://.../xml you won’t get json by mistake.

> Regards,
> 
> - Håvard
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742              INTERNET: marka at isc.org