Bind 9 on ubuntu with occasional dns problems

Amerika · 07-21-2011, 05:33 PM

right now i have an name server on 83.99.211.134 server
called ns.coom.lv
But i keep having a problem that occasionaly my subdomains or homepages just dont work. If i wright www.coom.lv in one time it works but after hour or any random it doesnt but i cant predict when that happens. Any ideas why this is happening and how to change that it doesnt happen?

Added the configuration files in order to get rid of flawes.

File 0.168.192.in-addr.arpa

Code:

$TTL 1D
@       IN      SOA     ns.brfconcept.lv. admin.brfconcept.lv. (
2051041121;
28800;
3600;
604800;
38400;
);


                IN      NS      ns.brfconcept.lv.
                IN      NS      ns.coom.lv.
106             IN      PTR     ns.brfconcept.lv.
115             IN      PTR     germanyxp.brfconcept.lv.
1               IN      PTR     gw.brfconcept.lv.
134             IN      PTR     testing.brfconcept.lv.
134             IN      PTR     War3.coom.lv.
106             IN      PTR     ns.coom.lv.
134             IN      PTR     www.coom.lv.
134             IN      PTR     Pub.coom.lv.
197             IN      PTR     kz.coom.lv.
134             IN      PTR     coom.lv.

named.conf.local file

Code:

//
// Do any local configuration here
//

// Consider adding the 1918 zones here, if they are not used in your
// organization
//include "/etc/bind/zones.rfc1918";

zone "brfconcept.lv"
{
        type master;
        file "/etc/bind/zones/brfconcept.lv.db";
};

zone "coom.lv"
{
        type master;
        file "/etc/bind/zones/coom.lv.db";
};

zone "0.168.192.in-addr.arpa"
{
        type master;
        file "/etc/bind/0.168.192.in-addr.arpa";
};

coom.lv.db file

Code:

$TTL 1D
@ IN SOA ns.coom.lv. admin.coom.lv. (
2011006140;
28800;
3600;
604800;
38400;
);

coom.lv.                IN      NS      ns.coom.lv.
ns                      IN      A       192.168.1.106
www                     IN      A       83.99.211.134
Pub                     IN      A       83.99.211.134
War3                    IN      A       83.99.211.134
kz                      IN      A       159.148.77.197
@                       IN      A       83.99.211.134

For more detailed info ask!

bathory · 07-22-2011, 02:13 AM

Quote:

; <<>> DiG 9.8.0-P4 <<>> ns coom.lv
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57220
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; QUESTION SECTION:
;coom.lv. IN NS

;; ANSWER SECTION:
coom.lv. 85942 IN NS ns.coom.lv.

;; ADDITIONAL SECTION:
ns.coom.lv. 86042 IN A 192.168.1.106

You are using a private IP (192.168.1.106) for your name server. You should change it to your public one (83.99.211.134) if you want your domain to be reachable from outside. Right now the public IP is still cached by the upstream nameservers, so your domain is resolving correctly, but when TTL expires it won't.
So change it accordingly, increase serial and reload bind.

Regards