目录

DNS

DNS(Domain Name System，域名系统)，在Internet上作为域名和IP地址映射的一个分布式数据库，能够使用户更直观、更方便的访问互联网(域名更便于记忆)，而不用去记住能够被机器直接读取的IP地址。通过主机名，最终得到该主机名对应的IP地址的过程叫做域名解析(或主机名解析)。所以DNS服务器的功能既是：域名、IP映射，DNS协议运行在UDP协议之上，使用端口号53。
hostname到IPaddress映射有两种方式：
1) 静态映射，每台设备上都配置主机到IP地址的映射(hosts)，各设备独立维护自己的映射表，而且只供本设备使用；
2) 动态映射，建立一套域名解析系统(DNS)，只在专门的DNS服务器上配置主机到IP地址的映射，网络上需要使用主机名通信的设备，首先需要到DNS服务器查询主机所对应的IP地址。
注意：在解析域名时，可以首先采用静态域名解析的方法，如果静态域名解析不成功，再采用动态域名解析的方法。可以将一些常用的域名放入静态域名解析表中，这样可以大大提高域名解析效率。

DNS Server

ServerSite

vim named.conf

 opeions { # listen-on port 53 { 127.0.0.1; }; #Monitoring computer IP. General Comment. # listen-on-v6 post 53 { ::1; };  #As above directory "/etc/named";  #specify directory of store domain data coinfig file allow-query { any; };  #specify DNSServer response network segment, 'any' mean that all network segment. }; zone "." IN { type hint; file "name.ca"; #record 13 root DNSServerIP }
  
 

  
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Master DNS Server

step1.

yum install -y bind bind-chroot
  
 

  
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step2. Edit the config file.
vim /etc/named.conf

 opeions { # listen-on port 53 { 127.0.0.1; }; #monitoring computer IP, General comments. # listen-on-v6 post 53 { ::1; }; #Idem directory "/etc/named";  #specify directory of store domain data coinfig file allow-query { any; };   #specify DNSServer response network segment, any mean that all network segment. };
  
 

  
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Forward Domain

vim /etc/name.rf1912.zone

 zone "fan.com" IN { type master; file "fan.com.zone";  #need create in the /var/named/fan.com.zone by manual allow-update { none; }; };
  
 

  
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Create zone config file:

cp -p /var/named/named.localhost /var/named/fan.com.zone
  
 

  
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vim fan.com.zone

 @ NS hostname.domain.   #one NS flag have to mapping one A flay hostname A 192.168.1.144 www A 192.168.1.145 ftp A 192.168.1.146 @ MX 10 mail.fan.com.
  
 

  
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Reverse Resolution

vim /etc/name.rf1912.zone

 zone "1.168.192.in-addr.arpa" IN { type master; file "192.168.1.zone"; allow-update { none; }; };
  
 

  
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Create zone config file:

cp -p /var/named/named.localhost /var/named/192.168.1.zone
  
 

  
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vim 192.168.1.zone

 @ NS hostname.domain. 145 PTR  www.fan.com. 146 PTR ftp.fan.com.
  
 

  
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step3. Start named service

service named restart
  
 

  
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Slave DNS Server

step1. Edit Slave dns server’s named.conf file same as master server
step2. Edit the named.rf1912.zones

Forward lookup:

vim /etc/named.rf1912.zones

 zone "fan.com" IN { type slave; masters { MasterServerIP; }; file "slaves/fan.com.zone.slave";  #in the /var/names/slaves/ directory };
  
 

  
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Reverse lookup:

vim /etc/named.rf1912.zones

 zone "1.168.192.in-addr.arpa" IN { type slave; masters { MasterServerIP; }; file "slaves/192.168.1.zone.slave"; };
  
 

  
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step3.

service named restart
  
 

  
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Split DNS Server

step1. Edit the DNSServer main config file
vim /etc/named.conf

#Comment the root node and line of 'include "/etc/named.rf1912.zone"' #zone "." IN { # type hint; # file "named.ca"; #}; #include "/etc/named.rf1912.zone"
  
 

  
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step2. Add view for public network and private network
Attention:First setting LAN then setting WAN .
vim /etc/named.conf
privateNetwork：

 view "lan(viewName)" { match-clients { 1992.168.1.0/24; };   #specify split uplook domain networkSepment. zone "fan.com" IN { #define the uplook domain type master; file "fan.com.zone" notify yes; #allow tthe DNSServer update also-notify { 192.168.1.2; }; #assign to the dns slave server }; };
  
 

  
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publicNetwork

 view "wan" { match-clients { any; }; zone "fan.com" IN { type master; file "fan.com.zone" }; };
  
 

  
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step3. Create the domain date file in directory with “/var/named” and restart named service.

文章来源: is-cloud.blog.csdn.net，作者：范桂飓，版权归原作者所有，如需转载，请联系作者。

原文链接：is-cloud.blog.csdn.net/article/details/50196293