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domain name system - Questions about DNS, BIND and setup



I have a few questions which I can't find the answer.




  • Is it possible to create two nameservers (ns1,ns2) with one IP ?



  • To move my server DNS from godaddy to ns1/ns2.my_domain.com, I can use Bind ?


  • If I install Bind, create a master zone (www, ns1, ns2, mail, pop, etc.), set it up. Then create second master zone (reverse), set it up. Log into godaddy account and change the nameservers to ns1/ns2.my_domain.com. Is it enough for the redirection to work ?




Here's my named.conf :



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     { localhost; };
    recursion yes;

    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 "my_domain.com" {
    type master;
    file "/var/named/my_domain.com.hosts";
    };

zone "67.4.70.xxx.in-addr.arpa" {
    type master;
    file "/var/named/xxx.70.4.67.rev";
    };



Here's the content from /var/named/my_domain.com.hosts



$ttl 38400
my_domain.com.  IN  SOA my_domain.com. root.localhost. (
            1364566563
            10800
            3600
            604800

            38400 )
my_domain.com.  IN  NS  my_domain.com.
my_domain.com.  IN  A   xxx.70.4.67
www.my_domain.com.  IN  A   xxx.70.4.67
mail.my_domain.com. IN  A   xxx.70.4.67
ns1.my_domain.com.  IN  A   xxx.70.4.67
ns2.my_domain.com.  IN  A   xxx.70.4.67
pop.my_domain.com.  IN  A   xxx.70.4.67
smtp.my_domain.com. IN  A   xxx.70.4.67
my_domain.com.  IN  NS  ns1.my_domain.com.

my_domain.com.  IN  NS  ns2.my_domain.com.
my_domain.com.  IN  MX  10 mail.my_domain.com.


Here's the content from /var/named/xxx.70.4.67.rev



$ttl 38400
67.4.70.xxx.in-addr.arpa.   IN  SOA my_domain.com. root.locahost. (
            1364575048
            10800

            3600
            604800
            38400 )
67.4.70.xxx.in-addr.arpa.   IN  NS  my_domain.com.
67.4.70.xxx.in-addr.arpa.   IN  PTR my_domain.com.


Any help would be really appreciated ^^



Thanks.



Answer





  • Is it possible to create two nameservers (ns1,ns2) with one IP ?




Don't do that.



If you don't have another machine to use as a secondary NS, use one of the multitude of free services out there that will do this for you.






  • To move my server DNS from godaddy to ns1/ns2.my_domain.com, I can use Bind ?




Yes.






  • If I install Bind, create a master zone (www, ns1, ns2, mail, pop, etc.), set it up. Then create second master zone (reverse), set it up. Log into godaddy account and change the nameservers to ns1/ns2.my_domain.com. Is it enough for the redirection to work ?




For the forward zone: Yes. It is unlikely that they will delegate the reverse zone to you.



Note that if you're going to have your NS hostnames inside your zone, you will need to add glue records via your domain registrar. This is essentially a "bootstrap" for other name servers to be able to resolve your NS addresses.


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