bind caching dns

[Mark Andrews]

In message <F8793A32-69E4-451C-ACED-AF935DB020C0 at kumari.net>, Warren Kumari wri
tes:
> 
> On May 15, 2012, at 4:05 AM, Ben wrote:
> 
> > Hi,
> > 
> > Any clue to resolve this.
> 
> Lets see...
> 
> You posted a question on May 8th asking for some assistance. You worded your 
> initial question poorly, but within 2 hours you got a complete and well writt
> en response from Matthew (and less than 24 hours after asking Eivind provided
>  additional info).
> 
> 5 days later you finally responded, and then less then 24 hours after that ar
> e surprised that you haven't gotten a response yet?
> 
> > 
> > BR
> > Ben
> >> Hi Matthew,
> >> 
> >> Sorry for late response.I enabled statistics-channel , and it gives web ba
> sed output.What is caching hit ratio filed , i mean which option / filed tell
>  us about how many queries comes from cache or...?
> 
> Anyway, if you search google for "bind caching hit ratio", the very first res
> ult gives you the answer...
> 
> W

Ben,
     you have the number of queries in, you have the number of times named
recursed (QryRecursion).

	(queries in - recursed) / queries in
Mark
 
> >> BR
> >> Ben
> >>> On 08/05/2012 10:09, Ben wrote:
> >>>> I am new with bind.I am trying to configure bind as caching server for
> >>>> our network.I configure it and it works successfully.
> >>>> 
> >>>> Can we get report or statistics something which shows which queries
> >>>> resolved from cache and which resolved from internet?
> >>> Yes. Add a section something like this (adapt for your own IP range and
> >>> whatever port number you prefer):
> >>> 
> >>> statistics-channels {
> >>>     inet 192.0.2.1   port 8080 allow { trusted; };
> >>>     inet 2001:db8::1 port 8080 allow { trusted; };
> >>> };
> >>> 
> >>> where 'trusted' is an ACL defining what IPs should be allowed to access
> >>> the statistical data.  You can now make HTTP queries like so:
> >>> 
> >>>    http://192.0.2.1:8080/
> >>> 
> >>> which will get you an XML document containing many statistics about the
> >>> performance of your named instance.  If you ever decide to set up an
> >>> authoritative server, you might consider adding 'zone-statistics yes;'
> >>> in the options { } section, but this doesn't make any difference to
> >>> recursive-only resolvers.
> >>> 
> >>>> bind has snmp mib for monitoring ?
> >>> Not to my knowledge.  It should be possible to write an agentx plugin
> >>> that translates from the XML data provided natively, but you'll have to
> >>> write your own MIBs since the standard one from RFC1612 seems to have
> >>> received little development since.  Indeed RFC3197
> >>> (https://www.ietf.org/rfc/rfc3197.txt) tells a cautionary tale.
> >>> 
> >>>    Cheers,
> >>> 
> >>>    Matthew
> >>> 
> >> 
> > 
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> > 
> 
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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