load balacing

[Brad Knowles]

At 6:58 PM +0200 7/2/01, e-o-f wrote:

>  Does anybody know how can I have two dns in load balancing?

	It depends on what you mean by "load balancing", and for what 
kind of service.


	If you're talking about having two authoritative servers sharing 
the load for answering queries about hosts and subdomains within your 
zone(s), then that will happen automatically.  Just set them both up, 
make sure that they are both listed in the delegation from your 
parent zone, and all the other nameservers out there in the world 
should automatically handle contacting one or the other or both 
nameservers, as appropriate.

	In this case, you'll probably want to set up one machine as the 
"master", and the other as the "slave".

>  So.. I must configure every time both nameservers? on not?

	When you add new zones, yes.  You would have to make changes to 
the configuration file on both master and slave.  However, to make 
changes within a zone, all you have to do is make sure that the 
serial number is incremented -- the master and slave should 
automatically handle everything else themselves.

>  How can I read some information about...
>  I bought DNS and BIND from O'reilly but it doesn't explain...

	This is definitely the book to buy.  Did you get 4th edition?  If 
you don't understand it the first time, it may help to go back and 
read it again.


	Oh, and please don't use "NOSPAM" garbage in your return address. 
The newsgroup you posted this message to is gatewayed to a mailing 
list, and having this garbage in your address is anti-social and 
makes it more difficult for people to reply to you with the kind of 
information you've requested.

	Moreover, all address scanning tools I know of are intelligent 
enough to remove all "NOSPAM" type tags I've ever seen, so it doesn't 
do any good anyway.

-- 
Brad Knowles, <brad.knowles at skynet.be>

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