Why doesn't bind release new entries until you do an rndc reload?

Question

Domain Name System

Goodnight! On my Bind server, which is primary for some domains, I noticed that when adding any records to the zone, the bind does not give them away until you make it rnds reload. How can this process be automated? Thanks in advance.

Answer 1

bind does not crawl into text files during operation, it would be too slow, all entries from zone files are read when the zone is loaded and entered into the cache. After changing the zone, it is enough to say
rndc reload zone_name
If you regularly perform operations on the zone, it is most convenient to make a couple of scripts (add entry / remove entry) that will make changes in the zone, increment serial and do rndc reload for the zone.