Linux (CentOS 7) DNS server set up

DNS (Domain Name System)

Domain Name -> IP analytical positive

IP -> domain name reverse lookup

 

DNS

The default listening port 53

 

Recursive queries

Such as the internal organization of the DNS server will first visit the local DNS domain name resolution

As there is no local DNS can not be resolved then to a higher level (transponder forwards)

And so on

 

Roles

Main the DNS, the DNS secondary, repeater, fake buffer

 

step

Installation -> main configuration file /etc/named.conf -> /etc/named.rfc1912.zones add the domain profile area -> * .zone add points to the file file -> file belonging group to modify named, and group members have read access

 

1, the primary DNS server set up

install service

After installation services

 

2, modify the configuration file

Modifying the master configuration file /etc/named.conf

 

 The first and last items changed any

 

 Add to

(Default has been added)

Note: You can make a copy first on /etc/named.rfc1912.zones

 

Modify the configuration file /etc/named.rfc1912.zones

 

 

Add zlt.com

Where file pointing zlt.com.zone need to create

At / var / named

 

 You can copy a named.localhost then make changes in it

Note : you need to add the modified file is named after modification group and set permissions named the r

dns specify the DNS server

www is the host

 

3, set up and test the network card configuration settings

 

 

Add DNS1 = 192.168.64.128 dns server because the unit is so set local ip

Check whether the cat /etc/resolv.conf dns added successfully

 

 

Has set up a network and restart the DNS service

 

 Test with nslookup command

 

 Note To add www (hostname)

 

Check grammar is wrong