How to Install DNS Server in RHEL/CentOS/6.X/7.X

Setup DNS Server in your production server

DNS Server IP address: 192.168.35.141

Install bind/ DNS package

# yum install bind bind-chroot bind-utils

Backup DNS default configuration file

# cp -rpf /etc/named.conf /etc/named.conf.bak

Edit /etc/named.conf file and changed highlighted parameter

# vim /etc/named.conf

options {

        listen-on port 53 { 127.0.0.1; 192.168.35.141;  };

        #listen-on-v6 port 53 { ::1; };

        directory       "/var/named";

        dump-file       "/var/named/data/cache_dump.db";

        statistics-file "/var/named/data/named_stats.txt";

        memstatistics-file "/var/named/data/named_mem_stats.txt";

        allow-query     { any; };      {Allow here only specific network as per requirement}

        recursion yes;

        dnssec-enable yes;

        dnssec-validation yes;

        /* Path to ISC DLV key */

        bindkeys-file "/etc/named.iscdlv.key";

        managed-keys-directory "/var/named/dynamic";

};

logging {

        channel default_debug {

                file "data/named.run";

                severity dynamic;

        };

};

zone "." IN {

        type hint;

        file "named.ca";

};

/* Add zone file here */

zone "linuxsolution.in" IN {

        type master;

        file "linux.zone";

        allow-update { none; };

};

include "/etc/named.rfc1912.zones";

include "/etc/named.root.key";

Create Zone file

# cd /var/named

# vim linux.zone

$TTL    86400

@               IN SOA  linuxsolution.in. root.linuxsolution.in. (

                                        42              ; serial (d. adams)

                                        3H              ; refresh

                                        15M             ; retry

                                        1W              ; expiry

                                        1D )            ; minimum

                   IN NS           linuxsolution.in.

linuxsolution.in.  IN A            192.168.35.141

mailzm             IN A            192.168.35.141

linuxsolution.in.   IN MX   0       mailzm.linuxsolution.in.

Restart DNS service

On CentOS 6.X

# service named restart

# chkconfig named on

On CentOS 7

# systemctl restart named

# systemctl enable named

Make entry in /etc/resolved.conf file as per below

# echo "nameserver 192.168.35.141" >/etc/resolv.conf

# cat /etc/resolv.conf

nameserver 192.168.35.141

Test DNS

# nslookup linuxsolution.in

Server:         192.168.35.141

Address:        192.168.35.141#53

Name:   linuxsolution.in

Address: 192.168.35.141

Check MX record

# host -t mx linuxsolution.in

linuxsolution.in mail is handled by 0 mailzm.linuxsolution.in.

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About Penguin Technology

I am a passionate cloud and DevOps professional specializing in Linux and open-source solutions. Through this blog, I share my knowledge and experience with the community, offering tips and insights on cloud technologies and DevOps practices.