On 25/5/2011 11:25 μμ, fredrik danerklint wrote:
PowerDNS ask each backend for domains which has a different 'notified_serial' than 'serial' for the domain.
Thanks Fredrik for the info. If I understand it right, 'notified_serial' is the one PowerDNS knows as current for a domain, and 'serial' is the one stored in the same domain (in the backend), which may be updated or not.
But how/when is this question from PowerDNS triggered? I mean, how PowerDNS knows *when* to ask the backend for an updated serial?
This function is called getUpdatedMasters(vector<DomainInfo>* domains) and exists in the source file 'master.cc' for MongoDB backend.
I understand that the above function is part of the master (if I name it correctly) process (i.e. not the backend). So, how is it in a file of the backend?
What PowerDNS except after a call to this function is a list of all domains that has a different serialnumber than notified serialnumber. Every backend can implement this functionallity differently since PowerDNS does not know how the information about a domain is stored.
That's trivial to retrieve, whatever the backend.
The good part that you asked about this is that I (you!) found a bug which would not fill out the domains that has a different serial number against the real serial number. I've sent Bert a patch to be included in the source code to fix this.
I am glad I helped (even without knowing it) for a fix! Nick _______________________________________________ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
