Re: bind caching dns
Hi Matthew,
Sorry for late response.I enabled statistics-channel , and it gives web
based output.What is caching hit ratio filed , i mean which option /
filed tell us about how many queries comes from cache or...?
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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records via GENERATE
Dear all, Is there a difference between the configuration of a set of A records using: 1) GENERATE command like: $GENERATE 0-255 $-1.2.3 A3.2.1.$ 2) Defining all the records one by one. - difference in the amount of memory used? - difference in the speed to retrive the answer. If GENERATE command is used == is the answer calculated at the query incoming or are all the records already present in memory? Thanks in advance for your feedback, ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: records via GENERATE
On May 14 2012, hugo hugoo wrote: Is there a difference between the configuration of a set of A records using: 1) GENERATE command like: $GENERATE 0-255 $-1.2.3 A3.2.1.$ 2) Defining all the records one by one. - difference in the amount of memory used? - difference in the speed to retrive the answer. If GENERATE command is used == is the answer calculated at the query incoming or are all the records already present in memory? The in-store representation of the zone is entirely the same (and hence the memory usage and access speed). The macro-generation occurs while the zone file is being read, at startup or after e,g, an rndc reload [zone]. -- Chris Thompson Email: c...@cam.ac.uk ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
RE: records via GENERATE
If I remember correctly, $GENERATE is a zone file syntax only. When you start up BIND, it parses those out and loads the generated records as if you'd written them out manually. $GENERATE just helps condense the zone file, but has no impact on overall operation. I'm sure someone from ISC could provide a much more technically in depth answer, but hopefully my memory serves correctly. t. From: bind-users-bounces+tsnyder=rim@lists.isc.org [mailto:bind-users-bounces+tsnyder=rim@lists.isc.org] On Behalf Of hugo hugoo Sent: Monday, May 14, 2012 12:14 PM To: bind-users@lists.isc.org Subject: records via GENERATE Dear all, Is there a difference between the configuration of a set of A records using: 1) GENERATE command like: $GENERATE 0-255 $-1.2.3 A3.2.1.$ 2) Defining all the records one by one. - difference in the amount of memory used? - difference in the speed to retrive the answer. If GENERATE command is used == is the answer calculated at the query incoming or are all the records already present in memory? Thanks in advance for your feedback, - This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful. ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
RE: records via GENERATE
Todd is correct. The GENERATE only exists on the master DNS in the zone data file. The DNS data, as made available to the querying machines, will contain all the individual records upon startup, on the master and all slaves. Alan V. Shackelford Senior Systems Software Engineer The Johns Hopkins University and John Hopkins Medicial Institutions Baltimore, Maryland USA ashac...@jhmi.edumailto:ashac...@jhmi.edu 410-735-4773 From: bind-users-bounces+ashackel=jhmi@lists.isc.org [mailto:bind-users-bounces+ashackel=jhmi@lists.isc.org] On Behalf Of Todd Snyder Sent: Monday, May 14, 2012 1:28 PM To: hugo hugoo; bind-users@lists.isc.org Subject: RE: records via GENERATE If I remember correctly, $GENERATE is a zone file syntax only. When you start up BIND, it parses those out and loads the generated records as if you'd written them out manually. $GENERATE just helps condense the zone file, but has no impact on overall operation. I'm sure someone from ISC could provide a much more technically in depth answer, but hopefully my memory serves correctly. t. From: bind-users-bounces+tsnyder=rim@lists.isc.orgmailto:bind-users-bounces+tsnyder=rim@lists.isc.org [mailto:bind-users-bounces+tsnyder=rim@lists.isc.org]mailto:[mailto:bind-users-bounces+tsnyder=rim@lists.isc.org] On Behalf Of hugo hugoo Sent: Monday, May 14, 2012 12:14 PM To: bind-users@lists.isc.orgmailto:bind-users@lists.isc.org Subject: records via GENERATE Dear all, Is there a difference between the configuration of a set of A records using: 1) GENERATE command like: $GENERATE 0-255 $-1.2.3 A3.2.1.$ 2) Defining all the records one by one. - difference in the amount of memory used? - difference in the speed to retrive the answer. If GENERATE command is used == is the answer calculated at the query incoming or are all the records already present in memory? Thanks in advance for your feedback, - This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful. ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
