停止 named：. [确定]
启动 named： [确定]
测试1：DNS服务器自身IP反解析成功
[root@cp1 ~]# dig @192.168.147.137 -x 192.168.147.137
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6_8.4 <<>> @192.168.147.137 -x 192.168.147.137
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 38679
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; QUESTION SECTION:
;137.147.168.192.in-addr.arpa. IN PTR
;; ANSWER SECTION:
137.147.168.192.in-addr.arpa. 86400 IN PTR ns.123.com.
;; AUTHORITY SECTION:
147.168.192.in-addr.arpa. 86400 IN NS ns.123.com.
;; ADDITIONAL SECTION:
ns.123.com. 86400 IN A 192.168.134.128
;; Query time: 0 msec
;; SERVER: 192.168.147.137#53(192.168.147.137)
;; WHEN: Tue Mar 14 00:00:02 2017
;; MSG SIZE rcvd: 100
测试2：域192.168.147内的任意主机都能反解析成功
[root@cp1 ~]# dig @192.168.147.137 -x 192.168.147.138
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6_8.4 <<>> @192.168.147.137 -x 192.168.147.138
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50957
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; QUESTION SECTION:
;138.147.168.192.in-addr.arpa. IN PTR
;; ANSWER SECTION:
138.147.168.192.in-addr.arpa. 86400 IN PTR mail.123.com.
;; AUTHORITY SECTION:
147.168.192.in-addr.arpa. 86400 IN NS ns.123.com.
;; ADDITIONAL SECTION:
ns.123.com. 86400 IN A 192.168.134.128
;; Query time: 0 msec
;; SERVER: 192.168.147.137#53(192.168.147.137)
;; WHEN: Tue Mar 14 00:01:31 2017
;; MSG SIZE rcvd: 105
测试3：不在域192.168.147内的IP反解析失败：
[root@cp1 ~]# dig @192.168.147.137 -x 192.168.123.138
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6_8.4 <<>> @192.168.147.137 -x 192.168.123.138
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 37175
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;138.123.168.192.in-addr.arpa. IN PTR
;; Query time: 1240 msec
;; SERVER: 192.168.147.137#53(192.168.147.137)
;; WHEN: Tue Mar 14 00:01:58 2017
;; MSG SIZE rcvd: 46
dns服务器主从配置：
主DNS服务器：192.168.147.137
从DNS服务器：192.168.147.138
在从DNS服务器上192.168.147.138:
安装DNS：
[root@cp2 ~]# yum install -y bind
编辑主配置：
[root@cp2 ~]# vim /etc/named.conf
注释掉以下两行，表示监听所有IP
// listen-on port 53 { 127.0.0.1; };
// listen-on-v6 port 53 { ::1; };
在最后面添加与主DNS一样的域配置，稍作修改如下：
zone "123.com" IN {
type slave;
file "slaves/123.com.zone";
masters { 192.168.147.137; };
};
zone "147.168.192.in-addr.arpa" IN {
type slave;
file "slaves/147.168.192.zone";
masters { 192.168.147.137; };
};
检查主配置文件是否有错：
[root@cp2 ~]# named-checkconf
启动：
[root@cp2 ~]# /etc/init.d/named start
Generating /etc/rndc.key: [确定]