Slave2 DNS Server

CentOS Web Panel is deployed in here.

Create configuration file: /root/dns_sync_slave2.conf


Setup cron how often you want to check for changes

crontab -e

* On servers with many clients and domains 100+ we recommend 5min cron.
* For servers with 1000+ you can go even with every 1-2 minutes.
example every 1 minute

* * * * * sh /scripts/dns_sync_slave2

In file /etc/named.conf after last include add:

include "/etc/named/slave_additional.conf";

Prepare config files

touch /etc/named/slave_additional.conf
chown named.named /etc/named/slave_additional.conf

go in cwp.admin -> Server Settings -> SSH Key Generator
there you need to generate new Keys

Go to Slave DNS Server & Manager
add key to the Slave DNS Server & Manager user you are using as “slave”

mkdir /home/slave/.ssh
nano /home/slave/.ssh/authorized_keys

** paste your key here which you had generated on the Slave2 DNS Server

chown -R slave.slave /home/slave/.ssh
chmod 600 /home/slave/.ssh/authorized_keys
chmod 700 /home/slave/.ssh/

You will also need to enable bash shell for that user so rsync could work

chsh -s /bin/bash slave

You can now test ssh connection like this from Slave2 DNS Server to Slave DNS Server & Manager
ssh slave@SERVER-IP -p SSH-PORT
If your connection goes ok without asking for the password then you are fully set.

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