LinuxQuestions.org - [SOLVED] DNS short name problem. FQDN worked

- Linux - Server (https://www.linuxquestions.org/questions/linux-server-73/)

- - DNS short name problem. FQDN worked (https://www.linuxquestions.org/questions/linux-server-73/dns-short-name-problem-fqdn-worked-4175510642/)

DNS short name problem. FQDN worked

Dear Guru's

I've setup local DNS on my lab

The problem is, I need the short name to be also working . Right now, I can use FQDN without problem

Here's my conf

named.conf

Code:

options {

        directory "/var/named";

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

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

        forwarders { 8.8.8.8; 4.4.4.4; };

        notify no;

};



# This is where you put in the link to the zone you

# want to serve



zone "labs.com" in {

        type master;

        file "/var/lib/named/labs.com.zone";

        allow-update { none; };

};



include "/etc/rndc.key";

zone file labs.com.zone

Code:

$TTL 86400

@  IN  SOA    ns1.labs.com. root.labs.com. (

        2013042201  ;Serial

        3600        ;Refresh

        1800        ;Retry

        604800      ;Expire

        86400      ;Minimum TTL

)

; Specify our two nameservers

                IN      NS              ns1.labs.com.

; Resolve nameserver hostnames to IP, replace with your two droplet IP addresses.

ns1            IN      A              10.0.0.15



; Define hostname -> IP pairs which you wish to resolve



labs-host1            IN      A              10.0.0.12

labs-host2            IN      A              10.0.0.14

Thanks and regards,

Hi,

Add in /etc/resolv.conf

Code:

domain labs.com

Regards

Quote:

Originally Posted by bathory (Post 5201510)

Hi,

Add in /etc/resolv.conf

Code:

domain labs.com

Regards

Hi, thank you for your reply

It still doesn't worked, thanks

Quote:

Originally Posted by akeka (Post 5201520)

Hi, thank you for your reply

It still doesn't worked, thanks

Can you give an example of what is not working?

Quote:

Originally Posted by bathory (Post 5201530)

Can you give an example of what is not working?

Here's the result if I use FQDN

Code:

[root@client1 named]# dig labs-host1.labs.com



; <<>> DiG 9.2.4 <<>> labs-host1.labs.com

;; global options:  printcmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46470

;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1



;; QUESTION SECTION:

;labs-host1.labs.com.                IN      A



;; ANSWER SECTION:

labs-host1.labs.com. 86400  IN      A      10.0.0.12



;; AUTHORITY SECTION:

labs.com.              86400  IN      NS      ns1.labs.com.



;; ADDITIONAL SECTION:

ns1.labs.com.          86400  IN      A      10.0.0.15



;; Query time: 0 msec

;; SERVER: 10.0.0.15#53(10.0.0.15)

;; WHEN: Thu Jul 10 12:49:45 2014

;; MSG SIZE  rcvd: 90

Here's the result if I use short name

Code:

[root@client1 named]# dig labs-host1



; <<>> DiG 9.2.4 <<>> labs-host1

;; global options:  printcmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 23722

;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0



;; QUESTION SECTION:

;labs-host1.                  IN      A



;; AUTHORITY SECTION:

.                      5498    IN      SOA    a.root-servers.net. nstld.verisign-grs.com. 2014070901 1800 900 604800 86400



;; Query time: 0 msec

;; SERVER: 10.0.0.15#53(10.0.0.15)

;; WHEN: Thu Jul 10 12:52:57 2014

;; MSG SIZE  rcvd: 105

Here's my /etc/resolv.conf

Code:

#search labs.com

domain labs.com

nameserver 10.0.0.15

You could use other network tools (like nslookup, ping etc) to do your tests.
Anyways for dig you need to add the "+search" option, e.g:

Code:

dig labs-host1 +search

Why do you have search commented out in /etc/resolv.conf? If you uncomment then, it should work as you want it to.

Quote:

Originally Posted by bathory (Post 5201550)

You could use other network tools (like nslookup, ping etc) to do your tests.
Anyways for dig you need to add the "+search" option, e.g:

Code:

dig labs-host1 +search

Hmmm, I don't know if I've to add +search at the dig

When I use ping, it worked even if I use short name

So I guess, the configuration are working since the first time :)

Still wondering though, can I just type dig <short name> ? :)

Thanks and regards

Quote:

Hmmm, I don't know if I've to add +search at the dig

You need it if you want dig to use /etc/resolv.conf to resolve the "short name". From the dig manpage:

Quote:

+[no]search
Use [do not use] the search list defined by the searchlist or domain directive in resolv.conf (if any).
The search list is not used by default.