如有动态域名服务dynamic-dns

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[root@localhost ~]# yum -y install dhcp* bind*

[root@localhost ~]# service named restart

[root@localhost ~]# chkconfig named on

[root@localhost ~]# service dhcpd restart

[root@localhost ~]# chkconfig named on

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

10 options {

11 listen-on port 53 { any; } ;

12 listen-on-v6 port 53 { any; } ;

13 directory "/var/named";

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

15 statistics-file "/var/named/data/named_stats. txt";16 memstatistics-file "/var/named/data/named_mem_stats. txt";17 allow-query { any; } ;

18 recursion yes;

19

20 dnssec-enable yes;

21 dnssec-validation yes;

22 dnssec-lookaside auto;

23

24 /* Path to ISC DLV key */

资料内容仅供您学习参考如有不当或者侵权请联系改正或者删除。25 bindkeys-file "/etc/named. iscdlv.key";

26

27 managed-keys-directory "/var/named/dynamic";28 } ;

29

30 logging {

31 channel default_debug {

32 file "data/named.run";

33 severity dynamic;

34 } ;

35 } ;

36

37 controls {

38 inet 172.0.0. 1 port 953

39 allow {localhost; } keys { "rndc-key"; } ;40 } ;

41

42

43 zone "xg.cn" IN {

44 type master;

45 file "xg.cn. zone";

资料内容仅供您学习参考如有不当或者侵权请联系改正或者删除。

46 allow-update {key "rndc-key"; } ;

47 } ;

48

49 zone "137. 168. 192. in-addr.arpa" IN {

50 type master;

51 file "xg.cn.rev";

52 allow-update {key "rndc-key"; } ;

53 } ;

54

55 zone ". " IN {

56 type hint;

57 file "named.ca";

58 } ;

59

60 include "/etc/named.rfc1912. zones";

61 include "/etc/named.root.key";

62 include "/etc/rndc.key";

[root@localhost ~]# dnssec-keygen -a hmac-md5 -b 512 -n HOST ddns-key [root@localhost ~]# cd /var/named

[root@localhost named]# cp named. localhost xg.cn. zone

[root@localhost named]# cp named. localhost xg.cn.rev

资料内容仅供您学习参考如有不当或者侵权请联系改正或者删除。[root@localhost named]# vim /var/named/xg.cn. zone

$TTL 86400

@ IN SOA dns root (

1 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum NS dns dns A 192. 168. 137. 73

[root@localhost named]# vim /var/named/xg.cn.rev

$TTL 86400

@ IN SOA dns root (

1 ; serial 1D ; refresh 1H ; retry 1W ; expire

资料内容仅供您学习参考如有不当或者侵权请联系改正或者删除。

3H ) ; minimum

NS dns

73 IN PTR dns dns A 192. 168. 137. 73

[root@localhost named]# chmod g+w /var/named/xg.cn.rev

[root@localhost named]# chmod g+w /var/named/xg.cn. zone

[root@localhost named]# chmod g+w /var/named/

[root@localhost named]# service named restart

Stopping named: [ OK ]Starting named: [ OK ][root@localhost named]# cp /usr/share/doc/dhcp-4. 1. 1/dhcpd.conf. sample /etc/dhcp/dhcpd.conf

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

7 option domain-name "xg.cn";

8 option domain-name-servers 192. 168. 137.73;

9

10 default-lease-time 604800;

资料内容仅供您学习参考如有不当或者侵权请联系改正或者删除。11 max-lease-time 864000;

12

13 ddns-update-style interim;

14 ddns-domainname "xg.cn";

15 ignore client-updates;

16 include "/etc/rndc.key";

17

18

19 zone xg.cn. {

20 primary 192. 168. 137. 73;

21 key "rndc-key";

22 }

23

24 zone 137. 168. 192. in-addr.arpa. {

25 primary 192. 168. 137. 73;

26 key "rndc-key";

27 }

64 subnet 192. 168. 137.0 netmask 255.255.255.0 {

65 range dynamic-bootp 192. 168. 137. 160 192. 168. 137.200;66 option routers 192. 168. 137. 1 ;

67 option broadcast-address 192. 168. 137.255;

资料内容仅供您学习参考如有不当或者侵权请联系改正或者删除。

68 }

[root@localhost named]# chmod o+r /etc/rndc.key

[root@localhost named]# service dhcpd restart

在xuegod74上设置网卡dhcp动态获取ip

BOOTPROTO=dhcp

重启网卡service network restart

测试nslookup xuegod74.xg.cn

Server: 192. 168. 137.73

Address: 192. 168. 137. 73#53

Name:xuegod74.xg.cn

Address: 192. 168. 137. 165

在xuegod73上查看ls /var/named/chroot named. empty xg.cn.rev xuegod.cn. zone data named. localhost xg.cn.rev. jnl xuegod.cn. zone-local dynamic named. loopback xg.cn. zone xuegod.cn. zone-network named.ca slaves xg.cn. zone. jnl

#xg.cn. zone. jnl为临时文件15分钟后同步给xg.cn. zone文件

其它客户端重启网络服务,查看dhcpd. leasesDHCP分配信息,发现已经有了

资料内容仅供您学习参考如有不当或者侵权请联系改正或者删除。set相关字段tail -n 15 /var/lib/dhcpd/dhcpd. leases server-duid "000100013531T070014)j301323";lease 192. 168. 137. 165 {starts 1 /06/22 15: 17:55;ends 1 /06/29 15: 17:55;cltt 1 /06/22 15: 17:55;binding state active;next binding state free;hardware ethernet 00:0c:29:37:6d:a3;set ddns-rev-name = "165. 137. 168. 192. in-addr.arpa. ";set ddns-txt = "001e15c0dc8759236c36687c3185aef359";set ddns-fwd-name = "xuegod74.xg.cn";client-hostname "xuegod74";

}

15分钟后查看xg.cn. zone和xg.cn.rev两个文件cat /var/named/xg.cn. zone

$ORIGIN .

$TTL 86400; 1 day xg.cnIN SOAdns.xg.cn. root.xg.cn. (

2 ; serial

资料内容仅供您学习参考如有不当或者侵权请联系改正或者删除。86400 ; refresh (1 day)

3600 ; retry (1 hour)

604800 ; expire (1 week)

10800 ; minimum (3 hours)

)

NSdns.xg.cn.

$ORIGIN xg.cn.dnsA192. 168. 137. 73

$TTL 302400; 3 days 12 hours xuegod74A192. 168. 137. 165

TXT"001e15c0dc8759236c36687c3185aef359"cat /var/named/xg.cn.rev

$ORIGIN .

$TTL 86400; 1 day

137. 168. 192. in-addr.arpa IN SOAdns. 137. 168. 192. in-addr.arpa.root. 137. 168. 192. in-addr.arpa. (

2 ; serial

86400 ; refresh (1 day)

3600 ; retry (1 hour)

604800 ; expire (1 week)

10800 ; minimum (3 hours)