Scientific Linux 6
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Configure as a Slave Server
2011/03/14
  Configure DNS as as Slave Server. It's easy to set up it.

Following example shows an environment that master DNS is "dlp.srv.world", Slave DNS is "ns.example.host".

[1] Write config in Zone file on Master DNS.
[root@dlp ~]#
vi /etc/named.conf


# add secondary DNS server in the section below

allow-transfer { localhost;
172.16.0.85;
};


[root@dlp ~]#
vi /var/named/srv.world.wan


$TTL
86400

@
IN
SOA
dlp.srv.world. root.srv.world. (

# update serial

2011031403
;Serial

3600
;Refresh

1800
;Retry

604800
;Expire

86400
;Minimum TTL

)
IN
NS
dlp.srv.world.

# add slave name server

IN
NS
ns.example.host.

IN
A
172.16.0.82

IN
MX 10
dlp.srv.world.


dlp
IN
A
172.16.0.82


[root@dlp ~]#
rndc reload

server reload successful
[2] Configuration on Slave DNS.
[root@ns ~]#
vi /etc/named.conf


# add lines like below

zone "srv.world" {

type slave;

masters { 172.16.0.82; };

file "slaves/srv.world.wan";

notify no;

};


[root@ns ~]#
rndc reload

server reload successful
[root@ns ~]#
ls /var/named/slaves

srv.world.wan
# zone file in master DNS has been just transfered
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