Zone file x'fer between two masters

Ralf Durkee rd at
Sun Feb 11 02:53:30 UTC 2007

Ralf Durkee wrote:
> Sangoi, Nehal (GE Supply, consultant) wrote:
>> Hi All
>> I have two Master servers residing at different locations and I want to
>> tranfer the zone updated between the two. How that can be configured in
>> to bind (9.2 on linux).
>> Regards
>> Nehal
> It's more accurate to think of master-slave as being a relationship 
> between name server zones, rather than as a type of name server.  Let's 
> say Name server A is your primary master name server, and Name server B 
> is a slave to A, so that it receives the updates.  Name server B could 
> have a master relationship to other slave name servers.  Hence you could 
> sort-of say that you have to master name servers, only 1 of which needs 
> to be updated.  Actually since the relationship is at the zone level and 
> not the name server level, then a server can be a master for some zones 
> while being a slave for others.
> -- Ralf Durkee, CISSP, GSEC, GCIH, GSNA
> Principal Security Consultant
Decided later I should add some of the specifics for this type of 
configuration, which admittedly I had to look up in the popular O'Reilly 
DNS &BIND book by Cricket Liu Section 10.3 on DNS notify.   The B name  
server is configured as type slave,  and then you add an also-notify 
sub-statement to the zone to have the slave C notified.  Likewise slave 
C needs the allow-notify option to allow notifications from the IP 
address of B.

Hope this helps. 

-- Ralf

More information about the bind-users mailing list