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
