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This article mainly introduces "how to set up a slave-type dns server". In daily operation, I believe many people have doubts about how to establish a slave-type dns server. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts about "how to set up a slave-type dns server". Next, please follow the editor to study!

Type of DNS server:

Master: provides dns services and contains regional documents itself.

Slave: provides the dns service with Master. When the name and address pair on the Master server changes, the Slave server is automatically updated to achieve synchronization.

Cache-only: does not have its own regional document, just helps the client segment to request a query from the external dns, and then saves the results to his cache.

[@ more@]

1pr premuri configuration check

Dig-t axfr example.com @ 192.168.0.254

Host-l example.com 192.168.0.254

2, install the package

Yum install-y bind bind-utils bind-chroot caching-nameserver

3, edit named.conf

Zone "example.com" IN {

Type slave

Masters {192.168.0.254;}

File "slaves/example.com.zone"

Forwarders {}

}

4. Modify file permissions

[root@station10 etc] # ls-lZ

-rw-r--r-- root root system_u:object_r:locale_t localtime

-rw-r- root named system_u:object_r:named_conf_t named.caching-nameserver.conf

-rw-r- root root root:object_r:named_conf_t named.conf

-rw-r- root named system_u:object_r:named_conf_t named.rfc1912.zones

-rw-r--r-- root named system_u:object_r:dnssec_t rndc.key

[root@station10 etc] # chown root:named named.conf

[root@station10 etc] # chmod 640! $

Chmod 640 named.conf

[root@station10 etc] # ls-lZ

-rw-r--r-- root root system_u:object_r:locale_t localtime

-rw-r- root named system_u:object_r:named_conf_t named.caching-nameserver.conf

-rw-r- root named root:object_r:named_conf_t named.conf

-rw-r- root named system_u:object_r:named_conf_t named.rfc1912.zones

-rw-r--r-- root named system_u:object_r:dnssec_t rndc.key

[root@station10 etc] #

5. Start the service

[root@station10 etc] # service named configtest

Zone localdomain/IN: loaded serial 42

Zone localhost/IN: loaded serial 42

Zone 0.0.127.in-addr.arpa/IN: loaded serial 1997022700

Zone 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa/IN: loaded serial 1997022700

Zone 255.in-addr.arpa/IN: loaded serial 42

Zone 0.in-addr.arpa/IN: loaded serial 42

[root@station10 etc] # service named restart

6. View the resulting file

[root@station10 etc] # cd / var/named/chroot/var/named/slaves/

[root@station10 slaves] # ls-lZ

-rw-r--r-- named named root:object_r:named_cache_t example.com.zone

[root@station10 slaves] # cat example.com.zone

7, test

[root@station10 slaves] # host-r station10.example.com localhost

Using domain server:

Name: localhost

Address: 127.0.0.1#53

Aliases:

Station10.example.com has address 192.168.0.10

[root@station10 slaves] # dig + norecurse station10.example.com @ localhost

; DiG 9.3.3rc2 + norecurse station10.example.com @ localhost

; (1 server found)

;; global options: printcmd

;; Got answer:

;;-> > HEADER

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