[Pdns-users] PowerDNS backend

RBK1001 Paul.Sun at syniverse.com
Tue Feb 5 09:01:40 UTC 2013


Hi Aki

understood. 

one silly question. even I need to write my own backend, I still need to use
pipebackend option, rite?

- rbk


Aki Tuomi wrote:
> 
> It is difficult to measure performance for scripted APIs as that depends
> on 
> what you do in the backend. However, due to reasons like JSON parsing and 
> generally more complex processing, remotebackend is probably slower than 
> equivalent pipe backend. 
> 
> The best performance can be gained by writing your own backend, if there
> is
> no backend to suit your needs. Although best performance here does require
> some thought into the backend design. 
> 
> Aki Tuomi
> 
> On Mon, Feb 04, 2013 at 05:03:40PM -0800, RBK1001 wrote:
>> 
>> Thanks
>> 
>> Considering performance, which backend should I used?
>> 
>> 
>> 
>> Aki Tuomi wrote:
>> > 
>> > And now that I started making this, it became evident that
>> remotebackend
>> > has a 
>> > major failure in it. Good news is that there is a patch for it in
>> ticket
>> > #697
>> > 
>> > The sample script is here: http://cmouse.desteem.org/remote.rb
>> > 
>> > Aki Tuomi
>> > 
>> > On Mon, Feb 04, 2013 at 01:08:48PM +0200, Aki Tuomi wrote:
>> >> Hi!
>> >> 
>> >> I'll create a sample script for you. 
>> >> 
>> >> Aki
>> >> 
>> >> On Mon, Feb 04, 2013 at 01:56:22AM -0800, RBK1001 wrote:
>> >> > 
>> >> > Hi
>> >> > 
>> >> > I need more information on how I can perform Remote Backend? is
>> there
>> >> any
>> >> > more information that I can refer to?
>> >> > 
>> >> > - rbk
>> >> > 
>> >> > 
>> >> > Roman Gaufman-2 wrote:
>> >> > > 
>> >> > > PowerDNS can fork the process as many times as you configure using
>> >> > > the distributor-threads option.
>> >> > > 
>> >> > > The good thing is the process remains running and kept running by
>> >> > > PowerDNS's guardian so I think it will be more limited by your
>> >> process
>> >> > > than
>> >> > > by PowerDNS :)
>> >> > > 
>> >> > > Re: Peter van Dijk
>> >> > > 
>> >> > > Thank you for that, I will check it out :) - right now I also read
>> >> the
>> >> > > openvpn ipp.txt file every time it changes to give vpn clients
>> their
>> >> own
>> >> > > hostname so the pipe backend gives a bit more flexibility, but
>> will
>> >> > > definitely check out the remotebackend!
>> >> > > 
>> >> > > On 4 February 2013 09:39, RBK1001 <Paul.Sun at syniverse.com> wrote:
>> >> > > 
>> >> > >>
>> >> > >> Hi
>> >> > >>
>> >> > >> Thank for the reply. If using pipebackend/bindbackend, is the
>> >> performance
>> >> > >> acceptable when comparing within mysql/pgsql?
>> >> > >>
>> >> > >> - rbk
>> >> > >>
>> >> > >>
>> >> > >>
>> >> > >> Roman Gaufman-2 wrote:
>> >> > >> >
>> >> > >> > I really love the simplicity of pipe backend and why I use
>> >> powerdns
>> >> > >> > instead
>> >> > >> > of say bind, all you need to really do is add this to your
>> >> pdns.conf:
>> >> > >> >
>> >> > >> > launch=pipe,bind
>> >> > >> > pipe-command=/etc/powerdns/dns_pipe.rb
>> >> > >> >
>> >> > >> > And in your script, you can have something as simple as:
>> >> > >> >
>> >> > >> > require 'powerdns_pipe'
>> >> > >> > PowerDNS::Pipe.new.run! do
>> >> > >> >   answer :name => question.name, :type => 'A', :ttl => 60,
>> >> :content =>
>> >> > >> > '1.2.3.4'
>> >> > >> > end
>> >> > >> >
>> >> > >> > The above is an example written in Ruby, but really it just
>> reads
>> >> DNS
>> >> > >> > requests from STDIN and writes DNS responses to STDOUT. You can
>> >> add any
>> >> > >> > custom code that will figure out the IP to your question - in
>> my
>> >> case I
>> >> > >> > plan to query a RESTFUL Rails API.
>> >> > >> >
>> >> > >> > Roman
>> >> > >> >
>> >> > >> > On 4 February 2013 09:29, RBK1001 <Paul.Sun at syniverse.com>
>> wrote:
>> >> > >> >
>> >> > >> >>
>> >> > >> >> Hi
>> >> > >> >>
>> >> > >> >> Thank for the information.
>> >> > >> >>
>> >> > >> >> I have a bit confused on the the pipebackend and bind backend,
>> >> which
>> >> > >> one
>> >> > >> >> should I use?
>> >> > >> >>
>> >> > >> >> - rbk
>> >> > >> >>
>> >> > >> >>
>> >> > >> >> Ruben '_cyclops_' d'Arco wrote:
>> >> > >> >> >
>> >> > >> >> > Hi,
>> >> > >> >> >
>> >> > >> >> > This should be helpful as a first start:
>> >> > >> >> >  http://doc.powerdns.com/backend-writers-guide.html
>> >> > >> >> >
>> >> > >> >> > Also have a look at the regression-test direcory, as it is
>> >> quiet
>> >> > >> helpul
>> >> > >> >> > for testing your backend.
>> >> > >> >> >
>> >> > >> >> > Regards,
>> >> > >> >> >     Ruben
>> >> > >> >> >
>> >> > >> >> > RBK1001 <Paul.Sun at syniverse.com> wrote:
>> >> > >> >> >
>> >> > >> >> >>
>> >> > >> >> >>Hi
>> >> > >> >> >>
>> >> > >> >> >>we would like to seek for an advice on the use of backend.
>> >> > >> >> >>
>> >> > >> >> >>we understood that PowerDNS offers several backend
>> solutions,
>> >> > >> however,
>> >> > >> >> >>I
>> >> > >> >> >>would like to know is there a way to connect to our
>> >> customerized
>> >> > >> >> >>backend?
>> >> > >> >> >>Currently, we are using a non-sql customerized backend with
>> >> large
>> >> > >> >> >>amount of
>> >> > >> >> >>data stored, and we would like to intergrate powerdns with
>> it,
>> >> is
>> >> > >> there
>> >> > >> >> >>anyway we can do?
>> >> > >> >> >>
>> >> > >> >> >>- rbk
>> >> > >> >> >
>> >> > >> >> > --
>> >> > >> >> > Regards,
>> >> > >> >> >           Ruben
>> >> > >> >> > _______________________________________________
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>> >> > >> >> >
>> >> > >> >> >
>> >> > >> >>
>> >> > >> >> --
>> >> > >> >> View this message in context:
>> >> > >> >>
>> http://old.nabble.com/PowerDNS-backend-tp34979116p34979385.html
>> >> > >> >> Sent from the PowerDNS mailing list archive at Nabble.com.
>> >> > >> >>
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>> >> > >> >>
>> >> > >> >
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>> >> > >> >
>> >> > >> >
>> >> > >>
>> >> > >> --
>> >> > >> View this message in context:
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>> >> > >> Sent from the PowerDNS mailing list archive at Nabble.com.
>> >> > >>
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>> >> > >>
>> >> > > 
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>> >> > > 
>> >> > > 
>> >> > 
>> >> > -- 
>> >> > View this message in context:
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>> >> > 
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>> >> > http://mailman.powerdns.com/mailman/listinfo/pdns-users
>> >> > 
>> > 
>> > 
>> > 
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>> > 
>> > 
>> >  
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>> > 
>> > 
>> 
>> -- 
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>> 
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>> 
> 
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