Cluster der kan alt/Install DNS server

Installer DNS Server

Install DNS server by download and install the package

apt-get install bind9

Configure DNS (Bind9)

First we will edit these 3 files.

/etc/bind/named.conf.local
/etc/bind/named.conf.options
/etc/resolvconf/resolv.conf.d/base

Second we will create these 2 files.

/etc/bind/zones/dka.local.db
/etc/bind/zones/rev.0.0.10.in-addr.arpa

First step: add domain zone – dka.local

Enter the named.conf.local file

nano /etc/bind/named.conf.local

Add the entire to the file

# 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.db";
};

Secund step: Add the DNS servers from your ISP

Enter the named.conf.options file

nano /etc/bind/named.conf.options

Delete or comment the following

        dnssec-validation auto;

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

Add the following to the bottom of the file

        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;};
};

NOTE: Be aware of which IP segment you are in. 172.16.4.66 = Hovedforløb 172.16.2.50,172.16.2.51 = Grundforløb

Third step: Modify the resolv.conf file

Enter the resolv.conf.d/base file

nano /etc/resolvconf/resolv.conf.d/base

Add the following lines

nameserver 172.16.4.66
nameserver 10.0.0.1
domain dka.local
search dka.local

Fourth step: Define zones

First make the directory /etc/bind/zones

mkdir /etc/bind/zones

Second make the file dka.local.db

nano /etc/bind/zones/dka.local.db

Add the following text to the newly created file

; 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

NOTES:

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.0.0.10.in-addr.arpa” file for reverse lookup

Create the rev.0.0.10.in-addr.arpa file

nano /etc/bind/zones/rev.0.0.10.in-addr.arpa

Add the following text

$TTL 3D
@       IN      SOA     ns.dka.local. admin.dka.local. (
                2007062001
                28800
                604800
                604800
                86400
)
        IN      NS      ns.dka.local.
10      IN      PTR     node1.dka.local
10      IN      PTR     node2.dka.local
10      IN      PTR     node3.dka.local
10      IN      PTR     node4.dka.local

Step six: Verify domain and DNS entries

Restart the network service

service bind9 restart

Dig

$ dig dka.local

Nslookup

nslookup ns

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