Bind9 dns zone not updating
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The Domain Name System (DNS) is a hierarchical naming system built on a distributed database for computers, services, or any resource connected to the Internet or a private network.
It's easy to remember that these two services are running on the same machine whose IP address is 192.168.0.1.DNS (Domain name system) may not be known to most people who use the Internet but it is the real invisible force driving the Internet without which everyone would be seeing numbers and IPs. Use the DOT in the end, whenever you specify a domain name in the DNS zone file.The whole meaning of domain names exists today just because of DNS. This DOT is so important and if you forget this you will have nightmares with your dns configuration. simply because it tells to start query from root servers (denoted by dot) 5.Users take advantage of this when they recite meaningful Uniform Resource Locators (URLs) and e-mail addresses without having to know how the computer actually locates them.BIND (pronounced /ˈbaɪnd/), or named (/ˈneɪmdiː/), was as of 2004 the most commonly used Domain Name System (DNS) server on the Internet, and still proclaims itself to be so.The simplest way of explaining DNS in one line is to map domain name to IP address. MX records (for mail servers) should contain hostnames NOT IPs.
I am not sure how many would know that when somebody types a domain name in IE/firefox, the browser forwards the DNS request asking for ip address from the resolver of ISP (ISP Provider) and the resolver contacts the root servers and then systematically retrieves the IP address within a matter of few milliseconds. Glue records are A records that are associated with NS records to provide "bootstrapping" information to the NS records nameserver.I'm running a BIND9/Ubuntu DNS server on Amazon EC2.The DNS server was working great, until I decided to change the IP address on the server to a different one (using the elastic IP system.) Any ways I changed all of the "A", "NS", etc. I've ran the following command: And it still returns the old IP address of the name server, plus the previous two IP addresses the zone used. Is there any thing I can do at the domain registrar level?In fact, these two latter servers will ever be referred to in the configuration because the xxxbox will be in charge of resolving names if the packet destination isn't known.Consequently, I consider the xxxbox like a primary server outside of our domain.The A record is so important in DNS without which the meaning of mapping hostnames to IP would be absurd. Every domain must have atleast 2 nameservers and if i ask each of them, and if they have domain zone information, I will get authoritative answer. So ns1 will answer authoritatively wheras ns2 won't which will be 'lame' until it is set up properly.