前有ftp，后面当然还是要有dns的，兄弟们还在等什么，超级详细的dns配置给大家送上，我会从主服务器和从服务器入手，大家有什么问题也可以在评论区交流！

CentOS7搭建DNS服务器​

​第一步：安装​

​[root@localhost ~]# yum install bind​

​[root@localhost ~]# systemctl stop​

​ firewalld         //关闭防火墙​

​[root@localhost ~]# setenforce 0                     //关闭selinux​

​第二步：编辑配置文件​

​ -----1.编辑主配置文件------​

​[root@localhost ~]# vi /etc/named.conf               ​

​options {​

​ listen-on port 53 { 192.168.80.10; };         //改成自己服务器的IP​

​ listen-on-v6 port 53 { ::1; };​

​ directory       "/var/named";​

​ dump-file       "/var/named/data/cache_dump.db";​

​ statistics-file "/var/named/data/named_stats.txt";​

​ memstatistics-file "/var/named/data/named_mem_stats.txt";​

​ allow-query     { any; };                     //任何人都可以访问​

​保存退出​

​ -----2.编辑区域配置文件-------​

​[root@localhost ~]# vi /etc/named.rfc1912.zones      ​

​………………​

//正向区域配置​

​zone "hello.com" IN {​

​        type master;​

​        file "hello.com.zone";​

​ allow-update { none; };​

​};​

​//反向区域配置​

​zone "80.168.192.in-addr.arpa" IN {​

​        type master;​

​        file "hello.com.local";​

​ allow-update { none; };​

​};​

​//其它不用动​

​保存退出​

​ --------3.编辑正向区域数据配置文件--------​

​[root@localhost ~]# cd /var/named​

​[root@localhost named]# cp -p​

​ named.localhost  hello.com.zone​

​[root@localhost named]# vi hello.com.zone​

​$TTL 1D​

​@      ​

​ IN SOA  @ rname.invalid. (​

​ 0       ; serial​

​ 1D      ; refresh​

​ 1H      ; retry​

​ 1W      ; expire​

​                                        3H​

​ )    ; minimum​

​ NS        @​

​        A         192.168.80.10       //本服务器地址​

​www     IN A     ​

​ 192.168.80.10       //www.hello.com对应的地址​

​ftp     IN A     ​

​ 192.168.80.10       //ftp.hello.com对应的地址​

​mail    IN CNAME ​

​ www                 //mail.hello.com是www.hello.com的另一个名称​

​*       IN A      192.168.80.2       ​

​ //如果后缀是hello.com但是前面的内容记录中没有的时候向查询主机返回192.168.80.2这个地址​

​保存退出​

​ ---------4.编辑反向区域数据配置文件------------​

​[root@localhost named]# cp -p​

​ hello.com.zone hello.com.local​

​[root@localhost named]# vi​

​ hello.com.local​

​$TTL 1D​

​@      ​

​ IN SOA  @ rname.invalid. (​

​ 0       ; serial​

​ 1D      ; refresh​

​ 1H      ; retry​

​ 1W      ; expire​

​                                        3H​

​ )    ; minimum​

​ NS        @​

​        A         192.168.80.10​

​10      IN PTR    www.hello.com.​

​保存退出​

​第三步：启动服务​

​[root@localhost named]# systemctl start​

​ named ​

​[root@localhost named]# netstat -anpu |​

​ grep name      //查看服务运行状态，UDP 53端口在监听​

​第四步：测试，验证​

​[root@localhost named]# vi​

​ /etc/resolv.conf​

​nameserver 192.168.80.10​

​保存退出​

​[root@localhost ~]# yum provides​

​ nslookup              //查询安装nslookup命令​

​[root@localhost ~]# yum install​

​ bind-utils -y​

​[root@localhost ~]# nslookup​

​ www.hello.com​

​成功显示：​

​Server:         192.168.80.10​

​Address:        192.168.80.10#53​

​Name:  ​

​ www.hello.com​

​Address: 192.168.80.10​

​[root@localhost ~]# nslookup​

​ 192.168.80.10​

​成功显示：​

​Server:         192.168.80.10​

​Address:        192.168.80.10#53​

​10.80.168.192.in-addr.arpa      name = www.hello.com.​

​搭建主、从域名服务器​

​第一步：搭建主从同步服务器（主服务器上配置）​

​[root@localhost ~]# vi​

​ /etc/named.rfc1912.zones     ​

​zone "hello.com" IN {​

​ type master;​

​ file "hello.com.zone";​

​ allow-update { 192.168.80.20; };         //配置为从服务器IP地址​

​ also-notify { 192.168.80.20; };​

​};​

​保存退出​

​第二步：配置从服务器（从服务器上配置）​

​ --------1.搭建DNS服务器--------（参照上面配置）​

​//编辑主配置文件​

​[root@localhost ~]# vi​

​ /etc/named.conf               ​

​options {​

​ listen-on port 53 { 192.168.80.20; };         //改成监听的服务器的IP（主服务器地址）​

​ listen-on-v6 port 53 { ::1; };​

​ directory       "/var/named";​

​ dump-file       "/var/named/data/cache_dump.db";​

​ statistics-file "/var/named/data/named_stats.txt";​

​ memstatistics-file "/var/named/data/named_mem_stats.txt";​

​ allow-query     { any; };                     //任何人都可以访问​

​保存退出​

​ --------2.搭建主从同步服务器（从服务器上配置）----------​

​[root@localhost ~]# vi​

​ /etc/named.rfc1912.zones​

​//正向区域配置​

​zone "hello.com" IN {​

​ type slave;​

​        masters { 192.168.80.10; };​

​ file "slaves/hello.com.zone";​

​ allow-notify { 192.168.80.10; };​

​};​

​//反向区域配置​

​zone "80.168.192.in-addr.arpa"​

​ IN {​

​ type slave;​

​        masters { 192.168.80.10; };​

​ file "slaves/hello.com.local";​

​ allow-notify { 192.168.80.10; };            //also-notify:主动通知从域名服务器进行更新​

​};​

​保存退出​

​第三步：启动服务​

​[root@localhost named]# systemctl start​

​ named ​

​[root@localhost named]# netstat -anpu |​

​ grep name      //查看服务运行状态，UDP 53端口在监听​

​成功显示：​

​netstat -anpu | grep name​

​Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name​

​udp       ​

​ 0      0 192.168.80.20:53        0.0.0.0:*                           1102/named​

​udp6      ​

​ 0      0 ::1:53                  :::*                                1102/named​

​[root@localhost ~]# cd​

​ /var/named/slaves/              ​

​[root@localhost slaves]# ls​

​成功显示：​

​hello.com.local  hello.com.zone​

​[root@localhost slaves]# yum install​

​ bind-utils​

​[root@localhost ~]# nslookup​

​ www.hello.com​

​成功显示：​

​Server:         ::1​

​Address:        ::1#53​

​Name:  ​

​ www.hello.com​

​Address: 192.168.80.10​

​第四步：测试验证​

​ -----主服务器修改配置-----​

​[root@localhost ~]# vi​

​ /var/named/hello.com.zone​

​$TTL 1D​

​@      ​

​ IN SOA  @ rname.invalid. (​

​                                        1       ; serial           //修改序列号，往上修改​

​ 1D      ; refresh​

​ 1H      ; retry​

​ 1W      ; expire​

​                                        3H​

​ )    ; minimum​

​ NS        @​

​ A         192.168.80.10​

​www    ​

​ IN A      192.168.80.10​

​ftp    ​

​ IN A      192.168.80.20                 //修改ftp地址，用来验证​

​mail   ​

​ IN CNAME  www​

​*      ​

​ IN A      192.168.80.2​

​保存退出​

​[root@localhost ~]# systemctl restart​

​ named        //重启dns服务​

​[root@localhost ~]# nslookup​

​ ftp.hello.com         //解析ftp地址​

​成功显示​

​Server:         192.168.80.10​

​Address:        192.168.80.10#53​

​Name:  ​

​ ftp.hello.com​

​Address: 192.168.80.20​

​ --------从服务器验证---------​

​[root@localhost ~]# nslookup​

​ ftp.hello.com​

​成功显示：​

​Server:         ::1​

​Address:        ::1#53​

​Name:  ​

​ ftp.hello.com​

​Address: 192.168.80.20​