Redhat 5.8 作業系統上DNS詳細配置( DNS resolution for SCAN VIPs )

1 、準備工作

軟體包支援（bind*、caching-nameserver）

安裝執行 yum install bind* caching-nameserver

看下我已經安裝的有關包

[root@doudou named]# rpm -qa bind* caching-nameserver

bind-utils-9.3.6-20.P1.el5_8.6

bind-libs-9.3.6-20.P1.el5_8.6

bind-chroot-9.3.6-20.P1.el5_8.6

caching-nameserver-9.3.6-20.P1.el5_8.6

bind-9.3.6-20.P1.el5_8.6

開啟named服務、設定開啟啟動

/etc/init.d/named start

chkconfig named on

配置nameserver

[root@doudou named]# ifconfig

eth0 Link encap:Ethernet HWaddr 00:0C:29:06:FC:D0

inet addr:192.168.1.212 Bcast:192.168.1.255 Mask:255.255.255.0

[root@doudou named]# cat /etc/resolv.conf

nameserver 192.168.1.212

nameserver 8.8.8.8

nameserver 4.4.4.4

2 、詳細配置

檢視named.caching-nameserver.conf 在作業系統上的位置

[root@doudou named]# cd /etc/

[root@doudou etc]# ls -ln named.*

lrwxrwxrwx 1 0 25 51 04-22 16:52 named.caching-nameserver.conf -> /var/named/chroot/etc/ Redhat 5.8 作業系統上DNS詳細配置(DNS resolution for SCAN VIPs) named.caching-nameserver.conf

lrwxrwxrwx 1 0 25 41 04-22 16:52 named.rfc1912.zones -> /var/named/chroot/etc/named.rfc1912.zones

備份並修改named.caching-nameserver.conf （備份是個人習慣） 【注意紅色字型為修改部分】

[root@doudou etc]# cd /var/named/chroot/etc/

[root@doudou etc]# cp -p named.caching-nameserver.conf named.caching-nameserver.conf_backup

[root@doudou etc]# cat named.caching-nameserver.conf

//

// named.caching-nameserver.conf

//

// Provided by Red Hat caching-nameserver package to configure the

// ISC BIND named(8) DNS server as a caching only nameserver

// (as a localhost DNS resolver only).

//

// See /usr/share/doc/bind*/sample/ for example named configuration files.

//

// DO NOT EDIT THIS FILE - use system-config-bind or an editor

// to create named.conf - edits to this file will be lost on

// caching-nameserver package upgrade.

//

options {

listen-on port 53 { 127.0.0.1; }; == 》127.0.0.1改成any

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";

// Those options should be used carefully because they disable port

// randomization

// query-source port 53;

// query-source-v6 port 53;

allow-query { localhost; }; ==>localhost 改成any

allow-query-cache { localhost; }; ==>localhost 改成any

};

logging {

channel default_debug {

file "data/named.run";

severity dynamic;

};

view localhost_resolver {

match-clients { localhost; }; ==>localhost 改成any

match-destinations { localhost; }; ==>localhost 改成any

recursion yes;

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

};

備份並修改named.rfc1912.zones

[root@doudou etc]# cd /var/named/chroot/etc/

[root@doudou etc]# cp -p named.rfc1912.zones named.rfc1912.zones_backup

[root@doudou etc]# vi named.rfc1912.zones

尾部新增

zone " scan-doudou.com" IN {

type master;

file " scan-doudou.com.zone";

allow-update { none; };

};

zone " Redhat 5.8 作業系統上DNS詳細配置(DNS resolution for SCAN VIPs) 1.168.192.in-addr.arpa" IN {

type master;

file " 1.168.192.in-addr.arpa.local";

allow-update { none; };

};

配置正向解析

[root@doudou etc]# cd /var/named/chroot/var/named/

[root@doudou named]# cp -p localhost.zone scan-doudou.com.zone

【紅色字型為新增部分】

[root@doudou named]# vi scan-doudou.com.zone

$TTL 86400

@ IN SOA @ root (

42 ; serial (d. adams)

3H ; refresh

15M ; retry

1W ; expiry

1D ) ; minimum

IN NS @

IN NS scan-doudou.com

IN A 127.0.0.1

IN AAAA ::1

www IN A 192.168.1.25

IN A 192.168.1.211

IN A 192.168.1.212

配置方向解析

【紅色字型為新增部分】

[root@doudou named]# cp -p named.local 1.168.192.in-addr.arpa.local

[root@doudou named]# vi 1.168.192.in-addr.arpa.local

Redhat 5.8 作業系統上DNS詳細配置(DNS resolution for SCAN VIPs) $TTL 86400

@ IN SOA localhost. root.localhost. (

1997022700 ; Serial

28800 ; Refresh

14400 ; Retry

3600000 ; Expire

86400 ) ; Minimum

IN NS localhost.

1 IN PTR localhost.

IN NS scan-doudou.com.

localhost IN A 127.0.0.1

25 IN PTR

211 IN PTR

212 IN PTR

重啟named服務

[root@doudou named]# /etc/init.d/named restart

停止 named：[確定]

啟動 named：[確定]

3 、驗證結果

[root@doudou named]# nslookup

Server: 192.168.1.212

Address: 192.168.1.212#53

Name:

Address: 192.168.1.25

Name:

Address: 192.168.1.211

Name:

Address: 192.168.1.212

[root@doudou named]# ping

PING (192.168.1.212) 56(84) bytes of data.

64 bytes from 1.168.192.in-addr.arpa (192.168.1.212): icmp_seq=1 ttl=64 time=0.018 ms

[root@doudou named]# ping

PING (192.168.1.211) 56(84) bytes of data.

64 bytes from 1.168.192.in-addr.arpa (192.168.1.211): icmp_seq=1 ttl=64 time=0.560 ms

[root@doudou named]# ping

PING (192.168.1.25) 56(84) bytes of data.

64 bytes from 1.168.192.in-addr.arpa (192.168.1.25): icmp_seq=1 ttl=64 time=0.061 ms

[root@doudou named]# nslookup 192.168.1.211

Server: 192.168.1.212

Address: 192.168.1.212#53

211.1.168.192.in-addr.arpa name = .

4 、DNS使用驗證

另一個機器

[root@doudou-32bit ~]# cat /etc/resolv.conf

nameserver 192.168.1.212

nameserver 8.8.8.8

nameserver 4.4.4.4

[root@doudou-32bit ~]# nslookup

Server: 192.168.1.212

Address: 192.168.1.212#53

Name:

Address: 192.168.1.212

Name:

Address: 192.168.1.25

Name:

Address: 192.168.1.211

[root@doudou-32bit ~]# ping

PING (192.168.1.211) 56(84) bytes of data.

64 bytes from doudou-32bit (192.168.1.211): icmp_seq=1 ttl=64 time=0.003 ms

[root@doudou-32bit ~]# ping

PING (192.168.1.25) 56(84) bytes of data.

64 bytes from 1.168.192.in-addr.arpa (192.168.1.25): icmp_seq=1 ttl=64 time=0.219 ms

[root@doudou-32bit ~]# ping

PING (192.168.1.212) 56(84) bytes of data.

64 bytes from 1.168.192.in-addr.arpa (192.168.1.212): icmp_seq=1 ttl=64 time=0.336 ms

[root@doudou-32bit ~]# nslookup 192.168.1.212

Server: 192.168.1.212

Address: 192.168.1.212#53

212.1.168.192.in-addr.arpa name = .

總結：

一個簡單的DNS搞了整整一天，但是最終還是成功了，成功還是很高興的。以後安裝RAC，需要使用DNS解析SCAN VIPs 我們就可以搞了。

Redhat 5.8 作業系統上DNS詳細配置(DNS resolution for SCAN VIPs)

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