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network-programmingdnscentosnslookup

Non-authoritative answer: *** Can't find xxxxxx.yyy: No answer

I installed bind on a CentOS 6 server for configuring a DNS zone for defining a domain. My /etc/named.conf is this:

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";
        allow-query     { any; };
        recursion no;

        dnssec-enable yes;
        dnssec-validation yes;
        dnssec-lookaside auto;

        /* 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";
};

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

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

and my zone configuration file (/var/named/xxxxxx.yyy.zone) based on TLDP is:

$TTL 86400
@   IN  SOA     ns1.xxxxxx.yyy. root.xxxxxx.yyy. (
        2014011001  ;Serial
        3600        ;Refresh
        1800        ;Retry
        604800      ;Expire
        86400       ;Minimum TTL
)
@    IN  NS       ns1.xxxxxx.yyy.
@    IN  NS       ns2.xxxxxx.yyy.
ns1     IN  A    aaa.bbb.cc.ddd
ns2     IN  A    aaa.bbb.cc.ddd

I set nameserver of domain to ns1.xxxxxx.yyy and ns2.xxxxxx.yyy and i can get this nameserver on whois:

meysam@freedom:~$ whois xxxxxx.yyy
// blah blah blah
% Information related to 'xxxxxx.yyy'


domain:     xxxxxx.yyy
ascii:      xxxxxx.yyy
// blah blah blah
nserver:    ns1.xxxxxx.yyy
nserver:    ns2.xxxxxx.yyy

but when i ping domain, it return unknown host error:

meysam@freedom:~$ ping xxxxxx.yyy
ping: unknown host xxxxxx.yyy

also output of nslookup is similar:

meysam@freedom:~$ nslookup xxxxxx.yyy
Server:     127.0.1.1
Address:    127.0.1.1#53

Non-authoritative answer:
*** Can't find yyyyyy.xxx: No answer

For more information, i append output of dig command:

meysam@freedom:~$ dig xxxxxx.yyy

; <<>> DiG 9.9.5-3ubuntu0.5-Ubuntu <<>> xxxxxx.yyy
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57346
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;xxxxxx.yyy.            IN  A

;; AUTHORITY SECTION:
xxxxxx.yyy.     6606    IN  SOA ns1.xxxxxx.yyy. root.xxxxxx.yyy. 2014011001 3600 1800 604800 86400

;; Query time: 123 msec
;; SERVER: 127.0.1.1#53(127.0.1.1)
;; WHEN: Fri Dec 25 20:57:36 IRST 2015
;; MSG SIZE  rcvd: 87

What's the problem? How can i fix this error?

Any guide is welcome. Thanks.

Solution

  • It appears you are querying for an A record, when none is defined for the root of the domain.

    Try adding one in your zone file.

    @     IN  A    aaa.bbb.cc.ddd