Shulou(Shulou.com)06/02 Report--

I. Environment

Centos7

Master: 192.168.3.173

From: 92.168.3.172

Second, all need to install bind service installation package

Configure the primary DNS server

Master: / etc/named.conf modification

Listen-on port 53 {any;}

Allow-query {any;}

Notify yes

Also-notify {192.168.3.172;}; # # write from DNS server address

#

Recursion yes

Dnssec-enable yes; these defaults are OK, do not need to change

Dnssec-validation yes

#

Add your zone file and mark it as the primary server

Zone "example.com" IN {

Type master

File "example.com"

}

Copy the zone file (main DNS)

Cd / var/named/

Cp-p named.localhost example.com

Note: each time you modify the master DNS configuration, you need to change the serial serial number, which must be larger than the slave server number.

Systemctl restart named

Systemctl enable named

Fourth, configure the slave DNS server

Cat / etc/named.conf

Zone "example.com" IN {

Type slave; is marked as from the DNS server

File "slaves/example.com"; add the zone file, this does not need to manually copy the file, it will generate its own, and open with vim will not be able to see the file.

Masters {192.168.3.173;}; # fill in the primary DNS server address

}

Systemctl restart named

Systemctl enable named

5. Testing

Lord:

Systemctl restart named

Systemctl stop named # stops the DNS main service and simulates the DNS server downmachine

View from: log

/ var/log/messages

Success ~

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