The purpose of this reference guide for named is to provide a sample configuration for a typical setup. Additional information for configuring a BIND server may be found at http://www.isc.org/products/BIND/. The purpose of DNS is to resolve all names of our nodes without editing each /etc/hosts file.

To quickly set up a DNS server, just check the file: /etc/clusterserver.conf and launch setup_dns.pl. Keep in mind Bind is chrooted.

Example of named.conf

key mykey {
    algorithm hmac-md5;
    secret "eoqj88fEwvNpSMoCAaH+NQ==";
};

include "/etc/bogon_acl.conf";
include "/etc/trusted_networks_acl.conf";

controls {
    inet 127.0.0.1 port 953
    allow { 127.0.0.1; 12.12.12.253; } keys { mykey; };
};

options {
    version "";
    directory "/var/named";
    dump-file "/var/tmp/named_dump.db";
    pid-file "/var/run/named.pid";
    statistics-file "/var/tmp/named.stats";
    zone-statistics yes;
    auth-nxdomain yes;
    query-source address * port *;
    listen-on port 53 { any; };
    cleaning-interval 120;
    transfers-in 20;
    transfers-per-ns 2;
    lame-ttl 0;
    max-ncache-ttl 10800;
    notify no;
    transfer-format many-answers;
    max-transfer-time-in 60;
    interface-interval 0;
    allow-query { any; };
    allow-recursion { any; };
    allow-transfer { any; };
};
zone "ac" { type delegation-only; };
zone "cc" { type delegation-only; };
zone "com" { type delegation-only; };
zone "cx" { type delegation-only; };
zone "lv" { type delegation-only; };
zone "museum" { type delegation-only; };
zone "net" { type delegation-only; };
zone "nu" { type delegation-only; };
zone "ph" { type delegation-only; };
zone "sh" { type delegation-only; };
zone "tm" { type delegation-only; };
zone "ws" { type delegation-only; };

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

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

zone "localhost" IN {
        type master;
        file "master/localhost.zone";
        allow-update { none; };
};
zone "0.0.127.in-addr.arpa" IN {
        type master;
        file "reverse/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 "reverse/named.ip6.local";
        allow-update { none; };
};

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

zone "0.in-addr.arpa" IN {
        type master;
        file "reverse/named.zero";
        allow-update { none; };
};
zone "12.12.12.in-addr.arpa" {
    type master;
    file "zone/db.12.12.12.hosts";
    forwarders { };
};
zone "guibland.com" {
    type master;
    file "zone/db.guibland.com.hosts";
    forwarders { };
};

The options tag specifies the “named” directory , the pid file, and the forwarders, which is needed to resolve out-of-zone names. We have various zones, 0.0.127.in-addr.arpa for loopback, 12.12.12.in-addr.arpa, and guibland.com, our domain name.