[AusNOG] Incorrect DNS setup

Mon Jul 5 10:44:36 EST 2010

Hi All,

Strictly speaking you don't actually need to have a "www." at the beginning of your host/web name.
You will, however, most likely be penalised by search engines for duplicate content if your website runs with www.blah.com.au<http://www.blah.com.au> and blah.com.au.

For load balancing you don't need to have a www, www2, whatever.blah.com.au as the load balancer typically assumes the role of your webserver(s) answering requests from the public and passing them transparently to the appropriate web server sitting behind - ie: you would call the load balancer www.blah.com.au<http://www.blah.com.au>. It could still hand off to www2 and www3 .blah.com.au behind the scenes.

We use the "www" or "www2" or "something" .blah.com.au to indicate the public facing host name.

Most people just like to see / expect to see "www." when visiting websites and that's probably why you see the majority of sites with www, however it's not mandatory as its just a name.

David - Yes, correct OPsView is Nagios/Cacti with a GUI, but it is very good. You can still configure manually if you have to, but the GUI is reasonably clever and good for helpdesk staff to monitoring up and running without deep knowledge of Nagios setup/compiling/etc. One of the biggest issues we had with Nagios (on it's own) was configuration files and typos/syntax. It would stop everything from working and make life difficult for helpdesk bods who were not sure on syntax

Cheers.

Regards,

Darren Moss
General Manager
Australia and New Zealand
[p] 1300 131 083 [f] 03 9017 2287
[e] Darren.Moss at em3.com.au<mailto:Darren.Moss at em3.com.au> [w] www.em3.com.au<http://www.em3.com.au/>

em3 People and Technology | Managed Technology Experts
postal: PO Box 2333, Moorabbin VIC 3189

New Zealand Airedale Street, Auckland City
postal: PO Box 39573, Howick 2045
[p] 09 887 0550 [f] 09 887 0273

________________________________
From: ausnog-bounces at lists.ausnog.net [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Andrew Oskam
Sent: Monday, 5 July 2010 10:31 AM
To: ausnog at lists.ausnog.net
Subject: Re: [AusNOG] Incorrect DNS setup

I believe, and don't quote me on this, that it's simply due to missing or incorrect A records.

If I am correct, I think it has something to do with load balancing. Can't say for sure.

As for where www originated from? all I can say is that i think it was all just to make things easier...technically I don't think www is really a requirement as such but it makes it easy to quote people a website..instead of people having to guess whether its a website or a hostname for a mailserver.

Andrew Oskam

E  percy at th3interw3bs.net<mailto:percy at th3interw3bs.net>

NOTICE:

These comments are my own personal opinions only and do not necessarily reflect the positions or opinions of my employer or their affiliates. All comments are based upon my current knowledge and my own personal experiences. You should conduct independent tests to verify the validity of any statements made in this email before basing any decisions upon those statements.

On 5/07/10 10:16 AM, Karl Kloppenborg wrote:
Hey Noggers,

Firstly I would like to apologise for going a-wall postal on you all yesterday... and a big thanks to those who off list posted me to discuss last mile setups and what not, and generally giving me a helping knowledgeable hand :)

So heres my post for today:

Very frequently I trawl around and go to peoples websites (especially when I see an email on ausnog with a domain I haven't been to attached to it ;P )

I have done this again this morning and it got me thinking, how come a lot of people have these two cases:

A) I navigate to blah.com.au<http://blah.com.au> and is goes "can't connect to this server" I append www. to the domain (it ends up being www.blah.com.au<http://www.blah.com.au>) and I get their website.

or

B)The reverse of this, I navigate to www.blah.com.au<http://www.blah.com.au> and it says "Can't connect to server", but I go to blah.com.au<http://blah.com.au> and it is all cool.

What I am wondering is:

A) Why do people leave have these cases?

B) Where did the use of appending www. to the front of things originate from?

C) also I see sometimes www1. or www2. on some websites, can someone explain these to me?

Thanks guys,
Hope your all having a nice monday morning.

Cheers!
Karl Kloppenborg

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