Multiple SOA

[Prabhat Rana]

So as long as named.conf host2 states it as master after the change even if SOA in the zonefile lists host1 as SOA. The file transfer will resume even when host1 is down?



--- On Wed, 2/11/09, Barry Margolin <barmar at alum.mit.edu> wrote:

> From: Barry Margolin <barmar at alum.mit.edu>
> Subject: Re: Multiple SOA
> To: comp-protocols-dns-bind at isc.org
> Date: Wednesday, February 11, 2009, 4:56 PM
> In article <gmvbtc$b8a$1 at sf1.isc.org>,
>  Prabhat Rana <prana9533 at yahoo.com> wrote:
> 
> > Hello,
> > Is it possible to have more than one hosts assigned as
> SOA in a given zone 
> > file?
> > I have BIND 9.5 and two UNIX hosts as authoritative
> servers (host1.com and 
> > host2.com) for the domain x.host.com 
> > Currently I have host1 as master and host2 configured
> as slave for 
> > x.host.com. In case if host1 is down, I'd like to
> have just switch it to 
> > master my making ca changed in named.conf and not
> having to touch the zone 
> > file. And have host2 continue to respond to queries
> and also perform zone 
> > file transfer to bunch of slave downstream which are
> configured both host1 
> > and host2 to be master for this doman. So can I have
> both host1 and host2 as 
> > SOA for the zonefile for x.host.com? 
> > In fact there are hundreds of other zone files for the
> domains that its auth 
> > to. If possible I'd like to have 2 SOAs in all
> these zone files so that when 
> > host1 is down, all I need to do is edit the named.conf
> file of host2. 
> > Thanks
> 
> The SOA record has nothing to do with zone transfers. 
> Slaves pull zone 
> transfers from the server IPs in the "master"
> clause in their 
> named.conf.  You can list multiple masters there, and the
> slaves will 
> pull from any master that has a higher serial number than
> the one they 
> have.
> 
> -- 
> Barry Margolin, barmar at alum.mit.edu
> Arlington, MA
> *** PLEASE don't copy me on replies, I'll read them
> in the group ***
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