[Pdns-users] Using +cn=114.114.114.114 in forward-zones-file.
Hi all, If I have the following line in my forward-zones-file: +cn=114.114.114.114 Does this mean all of the domain names under the cn domain will be forward to 114.114.114.114 for recursive domain name lookup? Regards -- .: Hongyi Zhao [ hongyi.zhao AT gmail.com ] Free as in Freedom :. ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
Re: [Pdns-users] About the mechanism of forward-zones when using multiple ips for one zonename.
Why not let the process run parallely and then picked out the one which is retured firstly to the client? Regards 2015-02-23 18:28 GMT+08:00 Peter van Dijk peter.van.d...@powerdns.com: Hello, On 23 Feb 2015, at 6:09 , Hongyi Zhao hongyi.z...@gmail.com wrote: forward-zones Comma separated list of ’zonename=IP’ pairs. Queries for zones listed here will be forwarded to the IP address listed. Since version 3.1.5, multiple IP addresses can be specified. Additionally, port numbers other than 53 can be configured. Sample syntax: forward-zones=example.org=203.0.113.210:5300;127.0.0.1, powerdns.com=127.0.0.1;198.51.100.10:530 I just want to know the mechanism when we use multiple ip for Query a zone. I mean is this process sequel or parallel? When we using multiple ip for resoving a specific domain-name, which answer given by the forwarders should be picked up by PowerDNS Recursor and then return it to user's client program? It’s best to assume the process is random. For any given query, the resulting data can come from any of the IPs, and there is no guarantee from which one. So, in general, make sure your backend IPs agree on the data! Kind regards, -- Peter van Dijk Netherlabs Computer Consulting BV - http://www.netherlabs.nl/ ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users -- Hongyi Zhao hongyi.z...@gmail.com Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
Re: [Pdns-users] About the mechanism of forward-zones when using multiple ips for one zonename.
Considering that the backend/forwarder IPs are always NOT owned by the authoritive servers of the queryer. It wil be difficult to ensure all of them online all the time. So, if we can let the process run parallely and then picked out the one which is retured firstly to the client. At least the query efficiency will be raised to some extent, IMO. Regards 2015-02-23 18:49 GMT+08:00 Hongyi Zhao hongyi.z...@gmail.com: Why not let the process run parallely and then picked out the one which is retured firstly to the client? Regards 2015-02-23 18:28 GMT+08:00 Peter van Dijk peter.van.d...@powerdns.com: Hello, On 23 Feb 2015, at 6:09 , Hongyi Zhao hongyi.z...@gmail.com wrote: forward-zones Comma separated list of ’zonename=IP’ pairs. Queries for zones listed here will be forwarded to the IP address listed. Since version 3.1.5, multiple IP addresses can be specified. Additionally, port numbers other than 53 can be configured. Sample syntax: forward-zones=example.org=203.0.113.210:5300;127.0.0.1, powerdns.com=127.0.0.1;198.51.100.10:530 I just want to know the mechanism when we use multiple ip for Query a zone. I mean is this process sequel or parallel? When we using multiple ip for resoving a specific domain-name, which answer given by the forwarders should be picked up by PowerDNS Recursor and then return it to user's client program? It’s best to assume the process is random. For any given query, the resulting data can come from any of the IPs, and there is no guarantee from which one. So, in general, make sure your backend IPs agree on the data! Kind regards, -- Peter van Dijk Netherlabs Computer Consulting BV - http://www.netherlabs.nl/ ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users -- Hongyi Zhao hongyi.z...@gmail.com Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 -- Hongyi Zhao hongyi.z...@gmail.com Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
Re: [Pdns-users] About the mechanism of forward-zones when using multiple ips for one zonename.
Which forward-rules do you meant to by saying without forward-rules? Are these forward rules can all be setted or controlled by using config file fo pdns_recurrsor? Why these rules cann't be treated combinedly into the inner optimizing algrithems for determining the maybe-best servers? Regards 2015-02-23 19:20 GMT+08:00 Peter van Dijk peter.van.d...@powerdns.com: Hello, On 23 Feb 2015, at 11:49 , Hongyi Zhao hongyi.z...@gmail.com wrote: Why not let the process run parallely and then picked out the one which is retured firstly to the client? In general (without forward-rules), we do something better - we try the servers and remember which one was faster. That way you get the performance benefits without unnecessarily overloading the other servers. I’m not entirely sure we do this for forward rules. Kind regards, -- Peter van Dijk Netherlabs Computer Consulting BV - http://www.netherlabs.nl/ ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users -- Hongyi Zhao hongyi.z...@gmail.com Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
[Pdns-users] About the mechanism of forward-zones when using multiple ips for one zonename.
Hi all, From the manual of PowerDNS Recursor, learned the following settings can be used in its config file: forward-zones Comma separated list of ’zonename=IP’ pairs. Queries for zones listed here will be forwarded to the IP address listed. Since version 3.1.5, multiple IP addresses can be specified. Additionally, port numbers other than 53 can be configured. Sample syntax: forward-zones=example.org=203.0.113.210:5300;127.0.0.1, powerdns.com=127.0.0.1;198.51.100.10:530 I just want to know the mechanism when we use multiple ip for Query a zone. I mean is this process sequel or parallel? When we using multiple ip for resoving a specific domain-name, which answer given by the forwarders should be picked up by PowerDNS Recursor and then return it to user's client program? Any hints on this issue will be highly appreciated. Regards -- Hongyi Zhao hongyi.z...@gmail.com Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
