BIND : Configure Secondary Server2023/04/24 |
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Configure DNS Secondary Server.
On this example, it shows to configure DNS Secondary Server [ns.server.education] (192.168.100.85) that
DNS Primary Server is [dlp.srv.world] (172.16.0.82) configured like here.
Replace IP address and Hostname to your own environment.
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| [1] | Configure on DNS Primary Server Host. |
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root@dlp:~#
vi /etc/bind/named.conf.options
.....
.....
options {
directory "/var/cache/bind";
.....
.....
allow-query { localhost; internal-network; };
# add secondary server to allow to transfer zone files
allow-transfer { localhost; 192.168.100.85; };
allow-recursion { localhost; internal-network; };
.....
.....
root@dlp:~#
vi /etc/bind/srv.world.wan
$TTL 86400
@ IN SOA dlp.srv.world. root.srv.world. (
# update serial if update zone file
2023042403 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;Minimum TTL
)
IN NS dlp.srv.world.
# add secondary server
IN NS ns.server.education.
IN A 172.16.0.82
IN MX 10 dlp.srv.world.
dlp IN A 172.16.0.82
www IN A 172.16.0.83
root@dlp:~# systemctl restart named |
| [2] | Configure onDNS Secondary Server Host. |
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root@ns:~#
vi /etc/bind/named.conf.external-zones # add target zone info # for IP address, it's the Primary server's IP address
zone "srv.world" IN {
type slave;
masters { 172.16.0.82; };
file "/etc/bind/slaves/srv.world.wan";
};
root@ns:~#
root@ns:~# systemctl restart named
ls /etc/bind/slaves srv.world.wan # zone file transfered
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