RedHat Linux AS 5.3 下DNS的配置与RedHat Linux AS 4.5的有很多地方不太一样，这里我把在RedHat Linux AS 5.3 下DNS配置步骤做了一个笔记，操作如下：
一、检查BIND包，缺少bind、bind-chroot包
二、利用YUM源，安装BIND包
1、配YUM源
[root@mydb ~]# mount /dev/cdrom /mnt
mount: block device /dev/cdrom is write-protected, mounting read-only
[root@mydb ~]# vi/etc/yum.repos.d/update.repo
[update]
name=update
baseurl=file:///mnt/Server
gpgcheck=0
enabled = 1
2、安装bind包
[root@mydb ~]# yum list
[root@mydb~]# yum install bind
Loaded plugins: rhnplugin, security
This system is not registered with RHN.
RHN support will be disabled.
Setting up Install Process
Parsing package install arguments
Resolving Dependencies
--> Running transaction check
---> Package bind.x86_64 30:9.3.4-10.P1.el5 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
Package Arch Version Repository Size
Installing:
bind x86_64 30:9.3.4-10.P1.el5 update 961 k
Transaction Summary
Install 1 Package(s)
Update 0 Package(s)
Remove 0 Package(s)
Total download size: 961 k
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : bind [1/1]
Installed: bind.x86_64 30:9.3.4-10.P1.el5
Complete!
[root@mydb~]# yum install bind-chroot
Loaded plugins: rhnplugin, security
This system is not registered with RHN.
RHN support will be disabled.
Setting up Install Process
Parsing package install arguments
Resolving Dependencies
--> Running transaction check
---> Package bind-chroot.x86_64 30:9.3.4-10.P1.el5 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
Package Arch Version Repository Size
Installing:
bind-chroot x86_64 30:9.3.4-10.P1.el5 update 42 k
Transaction Summary
Install 1 Package(s)
Update 0 Package(s)
Remove 0 Package(s)
Total download size: 42 k
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : bind-chroot [1/1]
Installed: bind-chroot.x86_64 30:9.3.4-10.P1.el5
Complete!
3、检查安装的BIND包，Ok了！
注：以上图片上传到红联Linux系统教程频道中。
[root@mydb ~]# service named status
rndc: connect failed: 127.0.0.1#953: connection refused
named is stopped
说明DNS没有配好，接下来就开始配置DNS。
三、配置DNS
1、安装caching-nameserver
[root@mydb~]# yum install caching-nameserver
Loaded plugins: rhnplugin, security
This system is not registered with RHN.
RHN support will be disabled.
Setting up Install Process
Parsing package install arguments
Resolving Dependencies
--> Running transaction check
---> Package caching-nameserver.x86_64 30:9.3.4-10.P1.el5 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
Package Arch Version Repository Size
Installing:
caching-nameserver x86_64 30:9.3.4-10.P1.el5 base 58 k
Transaction Summary
Install 1 Package(s)
Update 0 Package(s)
Remove 0 Package(s)
Total download size: 58 k
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : caching-nameserver [1/1]
Installed: caching-nameserver.x86_64 30:9.3.4-10.P1.el5
Complete!
2、安装完成会在/etc/下生成named.caching-nameserver.conf，查看其内容如下：
[root@mydb~]# cat /etc/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; };
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; };
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
view localhost_resolver {
match-clients { localhost; };
match-destinations { localhost; };
recursion yes;
include "/etc/named.rfc1912.zones";
};
3、拷贝/etc/named.caching-nameserver.conf到/var/named/chroot/etc/named.conf
[root@mydb ~]# cp /etc/named.caching-nameserver.conf /var/named/chroot/etc/named.conf
4、编辑/var/named/chroot/etc/named.conf
[root@mydb ~]# vi/var/named/chroot/etc/named.conf
options {
listen-on port 53 { 0.0.0.0/0; };
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 { any; };
//allow-query-cache { any; };
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
#view localhost_resolver {
# match-clients { localhost; };
# match-destinations { localhost; };
# recursion yes;
# include "/etc/named.rfc1912.zones";
#};
#
# ----添加以下这一段
zone "example.com."{
type master;
file "example.file";
};
5、修改named.conf权限
[root@mydb~]# cd /var/named/chroot/etc/
[root@mydbetc]# ll
total 20
-rw-r--r--1 root root 405 Sep 26 22:10 localtime
-rw-r-----1 root named 1195 Jan 6 2009 named.caching-nameserver.conf
-rw-r-----1 root root 1371 Nov 27 10:19 named.conf
-rw-r-----1 root named 955 Jan 6 2009named.rfc1912.zones
-rw-r-----1 root named 113 Nov 27 09:53 rndc.key
[root@mydbetc]# chown .named named.conf
[root@mydbetc]# ll
total 20
-rw-r--r--1 root root 405 Sep 26 22:10 localtime
-rw-r-----1 root named 1195 Jan 6 2009 named.caching-nameserver.conf
-rw-r-----1 root named 1371 Nov 27 10:19 named.conf
-rw-r-----1 root named 955 Jan 6 2009named.rfc1912.zones
-rw-r----- 1 root named 113 Nov 27 09:53 rndc.key
6、配域名
root@mydbnamed]# pwd
/var/named/chroot/var/named
[root@mydbnamed]# ls -l
total 36
drwxrwx---2 named named 4096 Aug 26 2004 data
-rw-r-----1 root named 198 Jan 6 2009 localdomain.zone
-rw-r-----1 root named 195 Jan 6 2009 localhost.zone
-rw-r-----1 root named 427 Jan 6 2009 named.broadcast
-rw-r-----1 root named 1892 Jan 6 2009named.ca
-rw-r-----1 root named 424 Jan 6 2009 named.ip6.local
-rw-r-----1 root named 426 Jan 6 2009 named.local
-rw-r-----1 root named 427 Jan 6 2009 named.zero
drwxrwx--- 2 named named 4096 Jul 27 2004 slaves
[root@mydb named]# cplocaldomain.zone example.file
7、编辑example.file
[root@mydb named]# vi /var/named/chroot/var/named/example.file
$TTL 86400
@ IN SOA guoyjoe.example.com. root (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS guoyjoe.example.com
guoyjoe IN A 192.168.153.129
mydb IN A 192.168.153.129
四、启动DNS服务
[root@mydbnamed]# service named restart
Stoppingnamed: [ OK ]
Starting named: [ OK ]
五、客户端的DNS指定
[root@mydb ~]# more /etc/resolv.conf
; generated by /sbin/dhclient-script
search localdomain
nameserver 192.168.153.129