CentOS-5.6-x86_64 下搭建DNS服务器

一、安装

# yum install -y bind bind-chroot ypbind bind-utils

# rpm -qa |grep bind

 bind-libs-9.3.6-16.p1.el5

 bind-utils-9.3.6-16.p1.el5

 ypbind-1.19-12.el5_6.1

 bind-9.3.6-16.p1.el5

 bind-chroot-9.3.6-16.p1.el5 

# yum install -y caching-nameserver-9.3.*   //安装后可启动named

# service named start

# netstat -antup         //tcp 53\953端口开放，953提供给rndc工具用来管理dns服务器

二、

  1.主区域配置

# cd /var/named/chroot/etc     //以下操作均在此路径下

# cp -p named.caching-nameserver.conf named.conf   //注意加 -p 所属组不变

# cp -p named.rfc1912.zones named.rfc1912.zones_back

# vim named.conf

### 配置内容如下：

options {

        listen-on port 53 { 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     { any; };

        allow-query-cache { any; };

};

logging {

        channel default_debug {

                file "data/named.run";

                severity dynamic;

        };

view localhost_resolver {

        match-clients      { any; };

        match-destinations { any; };

        recursion yes;

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

### 结束 ###

# vim named.rfc1912.zones

zone "." in {

        type hint;

        file "named.ca";

zone "laowafang.com" in {

        type master;

        file "test.com.zone";

        allow-update { none; };

zone "146.147.119.in-addr.arpa" in {

        file "test.com.local";

2.区域文件配置

# cd /var/named/chroot/var/named           //以下操作均在此路径下

# cp -p localhost.zone test.com.zone  //拷贝正向文件

# cp -p named.local test.com.local    //拷贝反向文件

# vim test.com.zone

$ttl    86400

@               in soa  @       root (

                                        42              ; serial (d. adams)

                                        3h              ; refresh

                                        15m             ; retry

                                        1w              ; expiry

                                        1d )            ; minimum

                in ns           dns.test.com.

                in mx   10      mail.test.com.

www1            in a            119.147.146.249

www2            in a            119.147.146.20

www             in cname        www1.test.com.

# vim test.com.local

@       in      soa     dns.test.com. root.test.com.  (

                                      1997022700 ; serial

                                      28800      ; refresh

                                      14400      ; retry

                                      3600000    ; expire

                                      86400 )    ; minimum

        in      ns      dns.test.com.

104       in      ptr     www1.test.com.

105       in      ptr     www2.test.com.

# ln -s /var/named/chroot/etc/named.conf /etc/    //创建软连接

# ll /etc/name*  //查看连接是否创建成功

# service named restart

# tail /var/log/messages    //查看日志存在 running 及成功启动

三、测试

[root@localhost ~]# nslookup www1.test.com

server:         119.147.146.249

address:        119.147.146.249#53

name:   www1.test.com

address: 119.147.146.249

四、rndc工具使用

用rndc可以在不停止dns服务器工作的情况下进行数据的更新，使配置生效。953提供给rndc工具用来管理dns服务器。

# rndc-confgen > /etc/rndc.conf     //生产配置文件

# start of rndc.conf

key "rndckey" {

        algorithm hmac-md5;

        secret "xo/qxwfjjye41orsbeaexq==";

        default-key "rndckey";

        default-server 127.0.0.1;

        default-port 953;

# end of rndc.conf

# use with the following in named.conf, adjusting the allow list as needed:

# key "rndckey" {

#       algorithm hmac-md5;

#       secret "xo/qxwfjjye41orsbeaexq==";

# };

# 

# controls {

#       inet 127.0.0.1 port 953

#               allow { 127.0.0.1; } keys { "rndckey"; };

# end of named.conf

# vim /etc/named.conf   //拷贝有 # 号注释的内容到named.conf末尾

### 添加内容如下：

### rndc.conf 2011-08-26 ###

      algorithm hmac-md5;

      secret "xo/qxwfjjye41orsbeaexq==";

controls {

      inet 127.0.0.1 port 953

              allow { 127.0.0.1; } keys { "rndckey"; };

### configure end ###

# rndc reload          //修改完.zone文件，使用rndc工具加载即可，