Difference between revisions of "Cluster der kan alt/DNS Server"

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(→‎Fourth step: Define zones)
Line 71: Line 71:
  
 
<source lang=cli>
 
<source lang=cli>
−
$TTL 3D
+
 
−
@ IN SOA ns.dka.dk. admin.dka.dk. (
+
; BIND data file for local loopback interface
−
  2007062001
+
;
−
  28800
+
$TTL   604800
−
  3600
+
@       IN     SOA     ns.dka.local. root.dka.local. (
−
  604800
+
                              8        ; Serial
−
  38400
+
                        604800        ; Refresh
−
);
+
                          86400        ; Retry
−
dka.dk.  IN      NS         ns.dka.dk.
+
                        2419200        ; Expire
−
ubuntudesktop  IN      A         192.168.0.10
+
                        604800 )      ; Negative Cache TTL
−
www            IN      CNAME      ubuntudesktop
+
;
−
pc            IN      A         192.168.0.11
+
@      IN      NS     ns.dka.local.
−
gw            IN      A          192.168.0.1
+
ns      IN      A       10.0.0.1
−
                      TXT        "Network Gateway"
+
ubuntu  IN      A       10.0.0.21
 +
 
 
</source>
 
</source>
  

Revision as of 09:21, 19 April 2012

Installation af DNS

Instructions

Install DNS sserver software

sudo apt-get install bind9

configure DNS (Bind)

We need to touch 5 files.

We will edit 3 files.

  1. /etc/bind/named.conf.local
  2. /etc/bind/named.conf.options
  3. /etc/resolv.conf

We will create 2 files.

  1. /etc/bind/zones/mydomain.com.db
  2. /etc/bind/zones/rev.0.168.192.in-addr.arpa

First step: add domain zone – mydomain.com

  • sudo vi /etc/bind/named.conf.local
# Our Domain zone
zone "dka.local." {
        type master;
        file "/etc/bind/zones/dka.local.db";
};

# For reverse DNS
zone "0.0.10.in-addr-arpa" {
        type master;
        file "/etc/bind/zones/rev.0.0.10.in-addr.arpa";
};

Secund step: Add the DNS servers from your ISP

  1. Sudo vi /etc/bind/named.conf.options
        forwarders {
                172.16.4.66;
         };

        auth-nxdomain no;    # conform to RFC1035
        listen-on-v6 { any; };
        listen-on { any; };

allow-query { 127.0.0.1; 172.16.4.66/24; 10.0.0.0/24;};
};

===Third step: Modify the resolv.conf file

$ Sudo vi /etc/resolve.conf 

search dka.dk.
nameserver 10.0.0.1

Fourth step: Define zones

Sudo mkdir /etc/bind/zones Sudo vi /etc/bind/zones/dka.dk.db 

; BIND data file for local loopback interface
;
$TTL    604800
@       IN      SOA     ns.dka.local. root.dka.local. (
                              8         ; Serial
                         604800         ; Refresh
                          86400         ; Retry
                        2419200         ; Expire
                         604800 )       ; Negative Cache TTL
;
@       IN      NS      ns.dka.local.
ns      IN      A       10.0.0.1
ubuntu  IN      A       10.0.0.21



The TTL or time to live is set for 3 days The ns.mydomain.com nameserver is defined ubuntudesktop, pc and gateway are entered as an A record An alias of www is assigned to ubuntudesktop using CNAME

Step five: Create a “rev.0.168.192.in-addr.arpa” file for reverse lookup

Sudo vi /tec/bind/zones/rev.0.168.192.in-addr.arpa 

$TTL 3D
@       IN      SOA     ns.dka.dk. admin.dka.dk. (
                2007062001
                28800
                604800
                604800
                86400
)
        IN      NS      ns.dka.dk.
1       IN      PTR     gw.dka.dk.
10      IN      PTR     ubuntudesktop.mydomain.com.
11      IN      PTR     pc.dka.dk.

Step six: Test our new domain and DNS entries

Dig 

$ dig dka.dk

Nalookup 

nslookup gw

Step seven: That's it

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