Shulou(Shulou.com)06/01 Report--

There are many differences between the configuration of DNS under RedHat Linux AS 5.3 and that of RedHat Linux AS 4.5. Here I take a note of the DNS configuration steps under RedHat Linux AS 5.3, as follows:

First, check the BIND package, missing bind and bind-chroot packages

Second, use YUM source to install bind package

1. Equipped with YUM source

[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=updatebaseurl= file:///mnt/Servergpgcheck=0enabled = 1

2. Install the bind package

[root@mydb ~] # yum list

[root@mydb~] # yum install bind

Loaded plugins: rhnplugin SecurityThis system is not registered with RHN.RHN support will be disabled.Setting up Install ProcessParsing package install argumentsResolving Dependencies-- > Running transaction check--- > Package bind.x86_64 30 Package bind.x86_64 9.3.4-10.P1.el5 set to be updated-- > Finished Dependency ResolutionDependencies Resolved= Package Arch Version Repository Size=Installing: bind x86 _ 64 30 kTransaction Summary=Install 9.3.4-10.P1.el5 update 961 kTransaction Summary=Install 1 Package (s) Update 0 Package (s) Remove 0 Package (s) Total download size: 961 kIs this ok [y yDownloading Packages:Running rpm_check_debugRunning Transaction TestFinished Transaction TestTransaction Test SucceededRunning Transaction Installing N]: yDownloading Packages:Running rpm_check_debugRunning Transaction TestFinished Transaction TestTransaction Test SucceededRunning Transaction Installing: bind [1Action1] Installed: bind.x86_64 30 10.P1.el5Complete 9.3.4!

[root@mydb~] # yum install bind-chroot

Loaded plugins: rhnplugin SecurityThis system is not registered with RHN.RHN support will be disabled.Setting up Install ProcessParsing package install argumentsResolving Dependencies-- > Running transaction check--- > Package bind-chroot.x86_64 30 10.P1.el5 set to be updated-- 9.3.4-10.P1.el5 set to be updated-- > Finished Dependency ResolutionDependencies Resolved= Package Arch Version Repository Size=Installing: bind-chroot X86'64 30 Package 9.3.4-10.P1.el5 update 42 kTransaction Summary=Install 1 Package (s) Update 0 Package (s) Remove 0 Package (s) Total download size: 42 kIs this ok [y yDownloading Packages:Running rpm_check_debugRunning Transaction TestFinished Transaction TestTransaction Test SucceededRunning Transaction Installing N]: yDownloading Packages:Running rpm_check_debugRunning Transaction TestFinished Transaction TestTransaction Test SucceededRunning Transaction Installing: bind -chroot [1bat 1] Installed: bind-chroot.x86_64 30 Vera 9.3.4-10.P1.el5Complete!

3. Check the installed BIND package, Ok!

[root@mydb ~] # service named status

Rndc: connect failed: 127.0.0.1#953: connection refused

Named is stopped

Indicates that the DNS is not configured, and then start to configure the DNS.

3. Configure DNS

1. Install caching-nameserver

[root@mydb~] # yum install caching-nameserver

Loaded plugins: rhnplugin SecurityThis system is not registered with RHN.RHN support will be disabled.Setting up Install ProcessParsing package install argumentsResolving Dependencies-- > Running transaction check--- > Package caching-nameserver.x86_64 30 10.P1.el5 set to be updated-- 9.3.4-10.P1.el5 set to be updated-- > Finished Dependency ResolutionDependencies Resolved= Package Arch Version Repository Size=Installing: caching-nameserver X86'64 30 Package 9.3.4-10.P1.el5 base 58 kTransaction Summary=Install 1 Package (s) Update 0 Package (s) Remove 0 Package (s) Total download size: 58 kIs this ok [y yDownloading Packages:Running rpm_check_debugRunning Transaction TestFinished Transaction TestTransaction Test SucceededRunning Transaction Installing N]: yDownloading Packages:Running rpm_check_debugRunning Transaction TestFinished Transaction TestTransaction Test SucceededRunning Transaction Installing: caching-nameserver [1Action1] Installed: caching-nameserver.x86_64 30 10.P1.el5Complete 9.3.4!

2. After the installation is completed, named.caching-nameserver.conf will be generated under / etc/. Check its contents as follows:

[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. Copy / etc/named.caching-nameserver.conf to / var/named/chroot/etc/named.conf

[root@mydb ~] # cp / etc/named.caching-nameserver.conf / var/named/chroot/etc/named.conf

4. Edit / var/named/chroot/etc/named.conf

[root@mydb ~] # vi/var/named/chroot/etc/named.conf

Options {listen-on port 53 {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"; #}; # #-add the following paragraph zone "example.com." {type master; file "example.file";}

5. Modify named.conf permissions

[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. Match the domain name

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. Edit 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.comguoyjoe IN A 192.168.153.129mydb IN A 192.168.153.129

Start the DNS service

[root@mydbnamed] # service named restart

Stoppingnamed: [OK]

Starting named: [OK]

5. DNS assignment of the client

[root@mydb ~] # more / etc/resolv.conf

; generated by / sbin/dhclient-script

Search localdomain

Nameserver 192.168.153.129

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