If you didn't install BIND packages then install them with:

 yum install bind
 yum install bind-chroot
 yum install bind-devel
 yum install bind-libbind-devel
 yum install bind-libs
 yum install bind-sdb
 yum install bind-utils
 yum install caching-nameserver
 yum install system-config-bind

chmod 755 /var/named/
chmod 775 /var/named/chroot/
chmod 775 /var/named/chroot/var/
chmod 775 /var/named/chroot/var/named/
chmod 775 /var/named/chroot/var/run/
chmod 777 /var/named/chroot/var/run/named/

# chkconfig named on 

# service named start 

To set SElinux

#  setsebool -P named_write_master_zones 1

Assumptions

your network is 192.168.1.0/24

Your master DNS name server is server2.example.com with IP address 192.168.1.2

1. # cd /var/named/chroot/etc

2. # cp named.rfc1912.zones named.conf

3. # vi named.conf

4.  After
   // See /usr/share/doc/bind*/sample/ for example named configuration files.
   //

5. Insert the following lines:

   options {
           listen-on port 53 { 127.0.0.1; };
           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";
   
           // Those options should be used carefully because they disable port
           // randomization
           // query-source    port 53;
           // query-source-v6 port 53;
   
           allow-query     { localhost; };
   };
   

6. Modify the listen-on port 53 directive to include your IP address

   listen-on port 53 { 127.0.0.1;192.168.1.2; };

7. Modify the allow-query to include your network IP address

   allow-query     { localhost; 192.168.1.0/24; };

8. Add the zone and the reverse zone lines by copying the following lines and paste them at the end of the file

   zone "example.com" IN {
           type master;
           file "example.com.zone";
   };
   
   zone "1.168.192.in-addr.arpa" IN {
           type master;
           file "example.com.rr.zone";
   };
   include "/etc/rndc.key";
   

9. Save and close the file
10. Create a link

    # ln -s /var/named/chroot/etc/named.conf /etc/named.conf

11. Configure the RNDC key by using this command:

    # rndc-confgen

12. Configure the zone file(example.com.zone)

    # cd /var/named/chroot/var/named

    # vi example.com.zone

13. Insert the following lines:

    
    $TTL    86400
    @               IN SOA  server2.example.com.      root.server2.example.com. (
                                            42              ; serial 
                                            3H              ; refresh
                                            15M             ; retry
                                            1W              ; expiry
                                            1D )            ; minimum
            IN      NS      server2.example.com
    
    

14. Save and close the file
15. Create the symbolic link

     ln -s /var/named/chroot/var/named/example.com.zone /var/named/example.com.zone

16. Configure the reverse zone

     # cd /var/named/chroot/var/named

    # vi example.com.rr.zone

17. Insert the following lines:

    
    $TTL    86400
    @               IN SOA  server2.example.com.      root.server2.example.com. (
                                            42              ; serial 
                                            3H              ; refresh
                                            15M             ; retry
                                            1W              ; expiry
                                            1D )            ; minimum
            IN      NS      server2.example.com
    
    2       IN      PTR     server2.example.com 
    
    

18. Save and close the file

19. 
    ln -s /var/named/chroot/var/named/example.com.rr.zone /var/named/example.com.rr.zone
    

20. # chkconfig named on

21. Allow access to TCP and UDP ports 53

    # system-config-securitylevel

    other port add 53 as tcp
    other port add 53 as udp
    

22. Restart named

    # chmod 777 /etc/named.conf

    # service named restart

 # host yahoo.com

 # dig yahoo.com

$TTL 86400 means the default time to live for the data on this master DNS server is three days.

SOA means start of authority which it describes where the zone is coming from.The zone in this case is coming from the computer named server2.example.com and the email is root@server2.example.com.

Serial Numbers means the date and version number of this data.

NS means the name server record which it is the name of the master DNS server(server2.example.com)

The final named.conf

// named.rfc1912.zones:
//
// Provided by Red Hat caching-nameserver package 
//
// ISC BIND named zone configuration for zones recommended by
// RFC 1912 section 4.1 : localhost TLDs and address zones
// 
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//
options {
        listen-on port 53 { 127.0.0.1;192.168.1.2; };
        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";

        // Those options should be used carefully because they disable port
        // randomization
        // query-source    port 53;
        // query-source-v6 port 53;

        allow-query     { localhost; 192.168.1.0/24; };
};

zone "." IN {
	type hint;
	file "named.ca";
};

zone "localdomain" IN {
	type master;
	file "localdomain.zone";
	allow-update { none; };
};

zone "localhost" IN {
	type master;
	file "localhost.zone";
	allow-update { none; };
};

zone "0.0.127.in-addr.arpa" IN {
	type master;
	file "named.local";
	allow-update { none; };
};

zone "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa" IN {
        type master;
	file "named.ip6.local";
	allow-update { none; };
};

zone "255.in-addr.arpa" IN {
	type master;
	file "named.broadcast";
	allow-update { none; };
};

zone "0.in-addr.arpa" IN {
	type master;
	file "named.zero";
	allow-update { none; };
};
zone "example.com" IN {
        type master;
        file "example.com.zone";
};

zone "1.168.192.in-addr.arpa" IN {
        type master;
        file "example.com.rr.zone";
        allow-update { none; };
include "/etc/rndc.key";