DNS rndc utility /etc/named.conf in Red Hat Linux OS

RNDC is the bind utility enables secure and remote management of running name server. It is earlier name is Daemon Control utility (ndc).rndc is also called by remote BIND, or DHCP server to dynamically “update” the local server’s configuration. It is not daemon but utility called by named to verify keys. It used 953 port .rndc is used key specified in /etc/named.conf three statement are essential with option statement you can set the default server and key for rndc
Options
{
default-server localhost;
default-key “”;
};

Server localhost
{
Key “”;
};

Key “”
{
};
and should exactly match their setting /etc/named.conf

To test this command you can run
rndc reload
rndc:relod command successfully.

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