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Question

how to achieve xxx.blogspot.com URL pattern ??

Answer 1

A:

you need a DNS server that will resolve any subdomain as the adress of your server,
you j2ee application can optain the hostname from the request header

UPDATE: here is a example of a BIND zone file:

$ttl 38400
mauriceperry.ch.    IN  SOA ks31441.kimsufi.com. maurice.mauriceperry.org. (
            1237374933
            10800
            3600
            604800
            38400 )
mauriceperry.ch.    IN  NS  ks31441.kimsufi.com.
mauriceperry.ch.    IN  NS  ns.kimsufi.com.
*   IN  A   213.186.61.21

Here xxx.mauriceperry.ch will resolve to 213.186.61.21 whatever xxx is.

Maurice Perry 2010-04-15 09:42:36

i don't think that blogspot creates subdomain for each regustration..what say ?there should be some another tweak...

org.life.java 2010-04-15 09:44:08

well, if you are using BIND, you can use a wildcard * in an A record

Maurice Perry 2010-04-15 09:56:31

can you please explain it lite more ..

org.life.java 2010-04-15 09:57:25

alright, I have updated my post with an example.

Maurice Perry 2010-04-15 10:02:27

lemme configure this in my machine and will keep posting status here..

org.life.java 2010-04-15 10:13:13

btw what are these values...1237374933 10800 3600 604800 38400 ?will it remain same for my case?

org.life.java 2010-04-15 11:50:49

No, they should be adapted. I don't remember what they all are, but the first is a sort of version number that needs to be updated each time the zone file is updated, so that the other DNS servers know when a refresh is needed.

Maurice Perry 2010-04-15 11:56:56

ok..lemme move ahead...

org.life.java 2010-04-15 12:24:41

Refering this link:http://ulyssesonline.com/2007/11/07/how-to-setup-a-dns-server-in-ubuntu//etc/bind/named.conf.local# Our domain zonezone "mydomain.com" { type master; file "/etc/bind/zones/mydomain.com.db";};# For reverse DNSzone "200.1.192.in-addr.arpa" { type master; file "/etc/bind/zones/rev.200.1.192.in-addr.arpa";};

org.life.java 2010-04-15 14:38:14

/etc/bind/named.conf.optionsoptions { directory "/var/cache/bind"; // If there is a firewall between you and nameservers you want // to talk to, you may need to fix the firewall to allow multiple // ports to talk. See http://www.kb.cert.org/vuls/id/800113 // If your ISP provided one or more IP addresses for stable // nameservers, you probably want to use them as forwarders. // Uncomment the following block, and insert the addresses replacing // the all-0's placeholder. forwarders { 192.1.200.1 }; auth-nxdomain no; # conform to RFC1035 listen-on-v6 { any; };};

org.life.java 2010-04-15 14:39:39

/etc/bind/zones/mydomain.com.db$TTL 3D@ IN SOA ns.mydomain.com. admin.mydomain.com. ( 2007062001 28800 3600 604800 38400);mydomain.com. IN NS ns.mydomain.com.jigar IN A 192.168.0.29www IN CNAME jigargw IN A 192.168.0.29 TXT "Network Gateway"* IN A 192.1.200.29

org.life.java 2010-04-15 14:40:35

rev.0.168.192.in-addr.arpa$TTL 3D@ IN SOA ns.mydomain.com. admin.mydomain.com. ( 2007062001 28800 604800 604800 86400) IN NS ns.mydomain.com.29 IN PTR gw.mydomain.com.29 IN PTR jigar.mydomain.com.

org.life.java 2010-04-15 14:43:06

this is my configuration..sorry to flood it like this, but got stuck here..error i am getting.. Stopping domain name service... bind9 rndc: connect failed: 127.0.0.1#953: connection refused

org.life.java 2010-04-15 14:43:51

You should have more information about the error in /var/log/messages

Maurice Perry 2010-04-16 05:19:01

finally done..! :) thanks

org.life.java 2010-04-16 06:31:33

Answer 2

A:

Buy a domain name at you're favorite ISP.
Configure for this domain a domain wildcard for the A record in the DNS zonefile (usualy using some nice tool from you're ISP):
```
*   IN  A   74.125.77.191
```

Code a Java Servlet (or whatever you are using) as front controller. The front controller will dispatch you to what ever the subdomain needs to show.

String domain = request.getLocalName();
String subdomain = domain.substring(0, domain.indexOf('.'));
goto(subdomain); // or what ever you need for the subdomain

Kdeveloper 2010-04-15 12:40:35

Thankx...can you help me what to do if i want to set up it in my local machine ?its linux..i have installed bind9i don't know the configuration ..

org.life.java 2010-04-15 13:22:22

Bind is not exactly an easy package to configure correctly. I would rather advice using dnsmasq. But why go through all the trouble if you can buy for $2 a domain name at godaddy.com that includes a free DNS server? If you just want to do a proof of concept, you can just edit the /etc/hosts file and add the needed (sub)domains. Although no wildcards are allowed in the hosts file, you can add as many domains as you like.

Kdeveloper 2010-04-15 17:28:47

Thanks for your time KDeveloper..finally done with it.

org.life.java 2010-04-16 07:28:26

One more question i have is suppose i buy a domain over internet, then how i can i achieve this configuration ?i have temporarily locally configured this DNS but what if i want each node in internet to resolve this pattern , how can this reflect all DNS ?

org.life.java 2010-04-20 04:34:20

The easies way is to use the DNS server of you’re ISP and configure the A record via their web interface.

Kdeveloper 2010-04-24 20:19:03

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how to achieve xxx.blogspot.com URL pattern ??

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