Domain Name Server In Linux

You can set up four different types of dns servers.

Domain name server in linux. How to use hostnamectl command if you are using systemd based distro such as rhel centos 7 x fedora latest ubuntu linux 16 04 lts debian 9 x arch linux and more use hostnamectl command. This is pretty much important on servers facing the internet or having an active internet connection or if your system is part of an organization where the internal domain name system is implemented for it infra. Domain name service dns is an internet service that maps ip addresses to fully qualified domain names fqdn and vice versa. The dns domain name system is a naming system for computers the service that does that is the dns server which translates an ip address to a human readable address this process is the backbone of the internet and a very important service in your server so from that point we will discuss dns server or specifically linux dns server and how to install configure and maintain it.

First of all check if your server is having domain name already set up or not using below command. Dns is a hierarchical decentralized naming system for computers services or other resources connected to the internet or a private network. Bind is the most common program used for maintaining a name server on linux. Berkeley internet name domain bind is the most commonly used dns server on the internet especially on unix like systems.

A master dns server for your domain s which stores authoritative records for your domain. Dns stands for domain name system or domain name servers translates internet domain and host names to ip addresses and vice versa. A dns server or name server is used to resolve an ip address to a hostname or vice versa. Domainname command in linux is used to return the network information system nis domain name of the host you can use hostname d command as well to get the host domainname if the domain name is not set up in your host then the response will be none.

For such a scenario you have to configure the domain name for your linux server. We will walk you through steps that need to be taken to the setup domain name on your linux server. Nameserver is the dns server to which your machine query for name resolutions. Local hostname and the domain name of your server defined in text configuration file located in etc directory.

In the networking terminology the domain name is the mapping of ip with the name. Dns naming system is a hierarchical and logical tree structure called the dns namespace. A slave dns server which relies on a master dns server for data.