[nycbug-talk] DNS naming scheme mind-blocker :)

[Brian Cully]

I like naming from most-specific to least, in proper DNS fashion. We actually do similar things here across our data centers. So I'd say:

puppet.$datacenter.$client.$tld

The only reason we did this was for the aforementioned most-to-least specific strategy. You can obviously configure puppet to use whatever you want. A nice side effect, though, was being able to reference puppet as nothing more than "puppet" thanks to using resolv.conf search settings and always getting the closest server.

On Aug 5, 2011, at 19:05, Matt Juszczak <matt at atopia.net> wrote:

> Hi folks,
> 
> I've come up with a great DNS naming scheme that I'm going to be using for my customers.
> 
> Let's say a customer's company is "abc corp".  I name the hosts:
> 
> <server name>.<data center>.abc-networks.net
> 
> With an internal DNS record (powered by pdns/ldap backend) of:
> 
> <server name>.<data center>.abc-networks.internal
> 
> App connections use abc-app.com, such as:
> 
> db.appname.abc-app.com / db.appname.abc-app.internal
> 
> So in theory, I can launch a server called "bob" in the "bwi01" data center, have it be a master database server for the "primary" database.
> 
> db.primary.abc-app.com ->
>   db1.primary.abc-app.com ->
>   bob.bwi01.abc-networks.net
> 
> This way, I keep the network and app "dns" separate, and things stay clean, and I can easily re-point things.
> 
> But I'm stuck.  Puppet is technically a piece of software, but it only powers the server configuration, nothing else (and isn't part of any specific app).  Even more so, I setup a puppet pool per data center.
> 
> So in that case, would I make an exception and do:
> 
> puppet.bwi01.abc-networks.net (pointing to the pool of puppet servers listening on port 8130)
> 
> or would I do:
> 
> bwi01.puppet.abc-app.com
> 
> to indicate the "app" called puppet and the "bwi01" server.
> 
> Any input? :) This is going to be spread out across multiple clients, and hard to change later, so I wanted to throw my thoughts out there.
> 
> -Matt
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