Bind9 dns zone not updating in need of updating
Domain Name Service (DNS) is an Internet service that maps IP addresses and fully qualified domain names (FQDN) to one another.
In this way, DNS alleviates the need to remember IP addresses. Ubuntu ships with BIND (Berkley Internet Naming Daemon), the most widely deployed DNS server.
After some time (depending on your zone cache and TTL settings) these changes will be propagated to the global DNS system.
You can use same tools in order to query for example Google public DNS servers () and see if your change was successfully propagated (or not yet).
For example: *** Warning: Failed to Zone Transfer from 18.104.22.168 (problem description) First make sure that the zone name is spelled correctly and matches the name used on the primary server, and make sure that the IP address is the correct address of your primary DNS server.I have a dns zone, which has serial number: 2015040500 Today I am going to add some CNAME records there, so I am interested in how to increment serial number, I mean should I change it based on today's date, e.g it will be: 2015042200 or just increment it with one, so it will be 2015040501 ?) The main advantage of this scheme is, that you also know the date of the last modification of your zone-file at first glance.If you configure your registered domain to use A and B as your domain's DNS servers, then C is a Stealth Secondary.It's still a secondary, but it's not going to be asked about the zone you are serving to the internet from A and B If you configure your registered domain to use B and C as your domain's DNS servers, then A is a stealth primary.
In this configuration BIND9 will find the answer to name queries and remember the answer for the next query. By caching DNS queries, you will reduce bandwidth and (more importantly) latency.