Dns slave server not updating
Now you know what a DNS zone is and the difference between these two types – Master DNS zone and Slave DNS zone.For any additional questions about your DNS infrastructure, you can contact our customer support.When starts, it requests all the data for the given zone from the master.The slave server then periodically checks with the master to see if it needs to update its database.The DNS ( Domain Name System ) is a distributed system, used for transalate domain names to IP and vice a versa. This article will help you to How to Setup Master Slave DNS Server on Cent OS 6 and RHEL Systems.
If a primary server already contains the zone data for a domain, it is not necessary to replicate this data.
The process of sending the most recent zone database from the master to the slave is called a zone transfer.
Thus, you do not modify data files on a slave server, you modify the data files on the zone's master server and the slave servers update their files from the master.
By using slave servers, you can improve response time and reduce network overhead by spreading the load over multiple machines.
Slave servers also provide redundancy in case the master server is not available.