[Pdns-users] Please validate my PowerDNS Infrastucture proposal

Barron, Josh jbarron at afsnetworks.com
Sun Oct 18 22:04:09 UTC 2009

Maybe I'm confused about the concepts.
The idea is to make the publicly available name servers slaves to the master (which doesn't respond to public queries).  If I use database replication, won't it just replicate the entire database, requiring all the servers to be masters?

-----Original Message-----
From: Patrick Domack [mailto:patrickdk at patrickdk.com]
Sent: Sun 10/18/2009 12:59 PM
To: Barron, Josh
Subject: Re: [Pdns-users] Please validate my PowerDNS Infrastucture proposal
I would question the usage of using superslave, unless you have other  
master servers that don't run powerdns somewhere.

I would personally just use the built in database replication to  
distribute updates, then depending on superslave, it will cause less  
updates to happen (just the record that changed, vs the whole domain)  
and is much easier to secure.

Quoting "Barron, Josh" <jbarron at afsnetworks.com>:

> Hello all,
> Please validate my proposed PDNS based infrastucture:
> Customers (and internal support technicians) will login to "PowerDNS  
> on Rails" or "PowerAdmin" Frontend server.  This server will host  
> PDNS (not PDNS-Recursor) but will not respond to DNS queries from  
> the Internet.  Its only access from behind the firewall will be  
> web-based for domain administration.
> 4 other servers, geographically distributed, will be used to run  
> PDNS and PDNS-Recursor.  I would like them configured in possibly a  
> superslave configuration.  Basically what I'm looking for is when  
> the "Master" server described above creates a new domain or updates  
> a domain, it sends notifies to the slaves to update or add the zone.  
>  I want the name servers that respond to DNS queries to be slave  
> servers and precursors only to try to mitigate any possible poisoning.
> What am I missing, if anything?  Any feedback or suggestions, even  
> criticism, is welcome.  We are trying to create a geographically  
> diverse, secure, and reliable DNS infrastructure for us and our  
> customers.  We are migrating from a dual server setup (West running  
> Bind 9, East running Men&Mice).
> Thanks!
> -Josh
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