Re: [cobalt-users] Secondary DNS for multiple domain on RaQ3

[Jens Kristian Søgaard <jens@xxxxxxxxxxxxxxxxxxxx>]

> Primary DNS is the machine that gets hit first; secondary nameservers get
> hit if the primary is down. TOTALLY APART FROM THAT is master and slave
DNS.
> Master DNS is the one with all the individual records configured (the fact
> that your master is usually also your primary is coincidental but useful).

You're not entirely correct.

The primary is not necessarily the one, that get hit first. Depending on the
resolver library implementation on the client, it will lookup on either the
primary or secondary server (or tertiary, etc. if such one is available).
Some resolver libraries looks up on the nameserver that is "nearest" (i.e.
has lowest ping time) - others look up on a radom server - etc.

--
Jens Kristian Søgaard, Mermaid Consulting I/S,
jens@xxxxxxxxxxxxxxxxxxxx,
http://www.mermaidconsulting.com/