Multiple BIND instances

Lightner, Jeff JLightner at
Tue Feb 7 14:10:39 UTC 2012

Virtualization doesn't reduce use of resources but DOES separate into what are perceived to be multiple "servers" so I'm not sure what you mean by "you still have one server".

-----Original Message-----
From: at [ at] On Behalf Of Matus UHLAR - fantomas
Sent: Tuesday, February 07, 2012 3:18 AM
To: bind-users at
Subject: Re: Multiple BIND instances

On 06.02.12 23:09, sasa sasa wrote:
>I got a server with 16GB memory, want to install 2 BIND on CentOS, one
> cache only and another authoritative.

> Is it better to install 2 OS virtually and run BIND in them or run 2
> instances of BIND on the same OS?

According to what I've heard, virtualization has quite high overhead in
such situations.

> I mean what is the best practice to take advantage of the hardware
> resources without risking having single DNS with cache and
> authoritative?

You still have one server, virtualization would not change much about

You can even run a single BIND instance with two separate views and
that should not affect functionality.

I suppose you are running 64bit OS, so you can have really huge cache

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