I'm not an enourmous expert, but I will try to put in some of my basic
knowledge in this list.
About the database: PowerDNS will cache some records, but for the rest
it should pull the record directly from the database when you request
one. You can of course, simply test this yourself.
About the slave-updating: After updating a record in a domain, the first
number of the SOA record of this domain should be increased (always).
PowerDNS stored the last value (before you updated the SOA) in the
domains/notified_serial column. If PowerDNS finds that a SOA record
contains a higher value than this "notified_serial", it knows it has to
send out an update to the slaves.
Also, the slave has a "last_check" column. I think some kind of
mechanism also exists, which makes the slave check for updates in case
it missed one.
With kind regards / Met vriendelijke groet,
Pierre van den Oord
LikeFiction
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Op 11-8-2010 22:35, Yves Goergen schreef:
Hello,
I'm currently setting up my first PowerDNS server. It shall act as
master for another DNS server. I'm going to use the gmysql backend. How
will the pdns server know when I have changed the records in the
database to send out notifications to the slaves? Will that work on a
regular basis or will I have to start a separate process to tell
pdns-server to rescan the database?
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