dns服务

来源：互联网发布：caffe softmax 参数编辑：程序博客网时间：2024/05/21 10:34

//挂在驱动

mount /dev/sr0 /mnt

//到处都是小空格，尤其配置文件中少一个都出大问题

//安装bind

yum instand bind -y

//配置named.conf

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

options {
        listen-on port 53 { 192.168.177.131; };     //监听的协议及端口以及主机地址
        directory       "/var/named";     //路径
};
zone "baidu.com" IN {
        type master;    //类型是主服务器
        file "named.baidu.com";   //文件
};

options {
listen-on port 53 { 192.168.177.131; };
directory "/var/named";
};

//进入var目录准备编辑named.baidu.com

[root@localhost ~]# cd /var/named
[root@localhost named]# touch named.baidu.com //创建文件
[root@localhost named]# chgrp named named.baidu.com //修改named.baidu.com的所属组

[root@localhost named]# chmod o-r named.baidu.com //修改权限

-rw-r-----. 1 root named 211 11月 25 10:57 named.baidu.com

[root@localhost named]# vim named.baidu.com

$TTL 1D
@       IN      SOA     @       admin.baidu.com. (
                                0                //序列号
                                1D             //Day
                                1H             //Hour
                                1W            //Week
                                3H)           //Hour
        IN      NS      ns.baidu.com.
        IN      MX      10 mail.baidu.com.
ns      IN      A       192.168.177.129
mail    IN      A       192.168.10.111
www     IN      A       192.111.111.111
ftp     IN      CNAME   www

五种定义的信息：
serial number:序列号，主服务器可改变，从服务器不能手动改变
refresh：定义检查间隔时间
retry：小于refresh
expire: 过期时间
nagative enswer TTL: 否定答案的缓存时长

资源记录类型：
SOA: Start Of Authority,起始授权记录，标明区域内主从之间如何同步数据，以及起始授权对象是谁，格式独特，写法独特。
  ZONE NAME TTL  IN  SOA  FQDN ADMINISTRATOR.ADMIN.COM. (
              serial number
              refresh
              retry
              expire
              na ttl
                   )
  时间单位：M(分钟)、H(小时)、D(天)、W(周)，默认单位是秒

A: Address,FQDN-->IPv4
AAAA: FQDN-->IPv6
PTR: PoinTeR,IP-->FQDN
NS: NameServer,定义自己，ZONE NAME-->FQDN

MX: Mail eXchanger,邮件交换器，ZONE NAME-->FQDN

优先级：0-99，数字越小，级别越高。

//重启服务

[root@localhost named]# systemctl restart named

//检查根 ,直接到服务器上进行检查

[root@localhost named]# dig -t NS baidu.com @192.168.177.131

; <<>> DiG 9.9.4-RedHat-9.9.4-29.el7 <<>> -t NS baidu.com @192.168.177.131
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30976
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;baidu.com. IN NS

;; ANSWER SECTION:
baidu.com. 86400 IN NS ns.baidu.com.

;; ADDITIONAL SECTION:
ns.baidu.com. 86400 IN A 192.168.177.129

;; Query time: 0 msec
;; SERVER: 192.168.177.131#53(192.168.177.131)
;; WHEN: 一 11月 27 23:43:33 CST 2017
;; MSG SIZE rcvd: 71

[root@localhost named]# dig -t A www.baidu.com @192.168.177.131

; <<>> DiG 9.9.4-RedHat-9.9.4-29.el7 <<>> -t A www.baidu.com @192.168.177.131
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10901
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;www.baidu.com. IN A

;; ANSWER SECTION:
www.baidu.com. 86400 IN A 192.111.111.111

;; AUTHORITY SECTION:
baidu.com. 86400 IN NS ns.baidu.com.

;; ADDITIONAL SECTION:
ns.baidu.com. 86400 IN A 192.168.177.129

;; Query time: 0 msec
;; SERVER: 192.168.177.131#53(192.168.177.131)
;; WHEN: 一 11月 27 23:46:04 CST 2017
;; MSG SIZE rcvd: 91

[root@localhost named]# dig -t MX baidu.com @192.168.177.131

; <<>> DiG 9.9.4-RedHat-9.9.4-29.el7 <<>> -t MX baidu.com @192.168.177.131
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24249
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 3

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;baidu.com. IN MX

;; ANSWER SECTION:
baidu.com. 86400 IN MX 10 mail.baidu.com.

;; AUTHORITY SECTION:
baidu.com. 86400 IN NS ns.baidu.com.

;; ADDITIONAL SECTION:
mail.baidu.com. 86400 IN A 192.168.10.111
ns.baidu.com. 86400 IN A 192.168.177.129

;; Query time: 2 msec
;; SERVER: 192.168.177.131#53(192.168.177.131)
;; WHEN: 一 11月 27 23:47:31 CST 2017
;; MSG SIZE rcvd: 108

[root@localhost named]# dig -t CNAME ftp.baidu.com @192.168.177.131

; <<>> DiG 9.9.4-RedHat-9.9.4-29.el7 <<>> -t CNAME ftp.baidu.com @192.168.177.131
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4688
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;ftp.baidu.com. IN CNAME

;; ANSWER SECTION:
ftp.baidu.com. 86400 IN CNAME www.baidu.com.

;; AUTHORITY SECTION:
baidu.com. 86400 IN NS ns.baidu.com.

;; ADDITIONAL SECTION:
ns.baidu.com. 86400 IN A 192.168.177.129

;; Query time: 0 msec
;; SERVER: 192.168.177.131#53(192.168.177.131)
;; WHEN: 一 11月 27 23:49:16 CST 2017
;; MSG SIZE rcvd: 93

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