We have already talked about what is DNS and what is a Secondary DNS, this time we will focus on the Primary DNS server. There is a DNS hierarchy in which the Primary DNS server is taking the central spot. It has the latest and full information, in comparison with lower level DNS servers who has just a cache of this information and with an expiry period.
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Do you know the difference between a Master (Primary) and a Slave (Secondary) DNS zone?
What is a DNS zone
First, let us explain what a DNS zone is. DNS zone is a container of DNS settings and DNS records of a DNS namespace. The DNS namespace can have single or multiple DNS zones, each managed by a particular DNS host/service. This division helps for the administrative purposes. It is like an enormous pie, each piece of it allows better separation of the administrative load and helps with redundancy.
Don’t directly associate a DNS zone with a specific domain. A DNS zone may contain multiple domain names or a single one; the important thing is that it is used for controlling a fraction of the namespace. DNS zones can be on the same servers too.
Continue reading “What is a DNS zone? Master and Slave DNS zone and how to create it”
We have already talked what is a DNS server or name server as it is also known. It is a complicated system that translates what we write (the domain name and address of a website that we desire) to IP addresses that computers and servers can understand.
Any DNS can be programmed to be primary (master) or secondary (slave), depends on the needs of the system as a whole. You can even have a primary DNS server that is secondary for another zone.
So what is the difference?
The hierarchy. The primary is the main one, and the secondary gets the DNS records from the primary. There are few different configurations of connecting the secondary that we would show you in a bit, but first, we want to explain to you why you need a secondary DNS.
If it does the same, why do you need it?
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