How to set up a primary DNS server using CentOS
Apr 11, 2014, 09:00 (0 Talkback[s])
(Other stories by Xmodulo)
Any operational domain has at least two DNS servers, one being called a primary name server (ns1), and the other a secondary name server (ns2). These servers are typically operated for DNS failover: If one server goes down, the other server becomes an active DNS server. More sophisticated failover mechanisms involving load balancers, firewalls and clusters are also possible.