CentOS7 DNS主从同步

CentOS7 DNS主从同步

192.168.80.102主192.168.80.103从

主从都要关闭

systemctl stop firewalldsetenforce 0

在主域名服务器上：(192.168.80.102)

-

启动服务 service ntpd start开机自启动systemctl enable ntpd

-在从域名服务器上：192.168.80.103

yum install ntp -y ntpdate 192.168.80.181 //用从的去同步主服务器的时间

到主服务80.102

vi /etc/named.rfc1912.zones 在最下面添加以下内容 zone "hello.com" IN { type master; file "hello.com.zone"; allow-update { 192.168.80.103; }; also-notify { 192.168.80.103; }; }; zone "80.168.192.in-addr.arpa" IN { type master; file "hello.com.local"; allow-update { 192.168.80.103; }; also-notify { 192.168.80.103; }; };

cd /var/named/ cp -p named.localhost hello.com.zone vi hello.com.zone

cd /var/named/ cp -p named.localhost hello.com.zone vi hello.com.zone $TTL 1D @ IN SOA hello.com. 3040401509.qq.com ( 0 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum NS dns.hello.com. dns IN A 192.168.80.102 IN A 192.168.80.103 ftp IN A 192.168.80.104

区域解析库：资源记录rrSOA：起始授权记录，一个区域文件只能有一个。NS：授权区域(授权哪个DNS服务器)。MX：邮件交换器，MX记录有优先级属性0-99，数字越小越高。A：将FQDN转换成IP地址。PTR:IP转换成FQDN。AAAA：FQDN -- IPV6。CNAME：正式名称。

cp -p hello.com.zone hello.com.local vi hello.com.local $TTL 1D @ IN SOA hello.com. 3040401509.qq.com ( 0 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum NS dns.hello.com. 102 IN PTR dns.hello.com. 103 IN PTR hello.com.

systemctl start named //启动dns服务netstat -anpt | grep named

在从域名服务器上80.103：

yum install bind -y vi /etc/named.conf listen-on port 53 { any; }; allow-query { any; };

vi /etc/named.rfc1912.zones #最后一行添加 zone "hello.com" IN { type slave; masters { 192.168.80.102; }; file "slaves/hello.com.zone"; }; zone "80.168.192.in-addr.arpa" IN { type slave; masters { 192.168.80.102; }; file "slaves/hello.com.local"; };

systemctl start named #启动服务器

cd /var/named/slaves/ cat hello.com.zone

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