在 CentOS 7.0 上搭建DNS 服务器

2026-04-18 13:30:37

1、[root@centos7 ~]# yum install bind-chroot bind -y

1、[root@centos7 ~]# cp -R /usr/share/doc/bind-*/sample/var/named/* /var/named/chroot/var/named/

1、[root@centos7 ~]# touch /var/named/chroot/var/named/data/cache_dump.db[root@centos7 ~]# touch /var/named/chroot/var/named/data/named_stats.txt[root@centos7 ~]# touch /var/named/chroot/var/named/data/named_mem_stats.txt[root@centos7 ~]# touch /var/named/chroot/var/named/data/named.run[root@centos7 ~]# mkdir /var/named/chroot/var/named/dynamic[root@centos7 ~]# touch /var/named/chroot/var/named/dynamic/managed-keys.bind

1、[root@centos7 ~]# chmod -R 777 /var/named/chroot/var/named/data[root@centos7 ~]# chmod -R 777 /var/named/chroot/var/named/dynamic

1、[root@centos7 ~]# cp -p /etc/named.conf /var/named/chroot/etc/named.conf

1、在 named.conf 文件尾添加 example.local 域信息，创建转发域（Forward Zone）与反向域（Reverse Zone）（LCTT 译注：这里example.local 并非一个真实有效的互联网域名，而是通常用于本地测试的一个域名；如果你需要做权威 DNS 解析，你可以将你拥有的域名如这里所示配置解析。）：

[root@centos7 ~]# vi /var/named/chroot/etc/named.conf

2、....zone "example.local" { type master; file "example.local.zone";};zone "0.168.192.in-addr.arpa" IN { type master; file "192.168.0.zone";};....

named.conf 完全配置如下：

//// named.conf//// 由Red Hat提供，转自于《Linux就该这么学》将 ISC BIND named(8) DNS服务器 // 配置为暂存域名服务器 (用来做本地DNS解析).//// See /usr/share/doc/bind*/sample/ for example named configuration files.//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"; allow-query { any; }; /* - 如果你要建立一个授权域名服务器服务器, 那么不要开启 recursion（递归）功能。 - 如果你要建立一个递归 DNS 服务器, 那么需要开启recursion 功能。 - 如果你的递归DNS服务器有公网IP地址, 你必须开启访问控制功能，只有那些合法用户才可以发询问. 如果不这么做的话，那么你的服服务就会受到DNS 放大攻击。实现BCP38将有效抵御这类攻击。 */ recursion yes; dnssec-enable yes; dnssec-validation yes; dnssec-lookaside auto; /* Path to ISC DLV key */ bindkeys-file "/etc/named.iscdlv.key"; managed-keys-directory "/var/named/dynamic"; pid-file "/run/named/named.pid"; session-keyfile "/run/named/session.key";};logging { channel default_debug { file "data/named.run"; severity dynamic; };};zone "." IN { type hint; file "named.ca";};zone "example.local" { type master; file "example.local.zone";};zone "0.168.192.in-addr.arpa" IN { type master; file "192.168.0.zone";};include "/etc/named.rfc1912.zones";include "/etc/named.root.key";

1、a)创建转发域：

[root@centos7 ~]# vi /var/named/chroot/var/named/example.local.zone

添加如下内容并保存：

;; Addresses and other host information.;$TTL 86400@ IN SOA example.local. hostmaster.example.local. ( 2014101901 ; Serial 43200 ; Refresh 3600 ; Retry 3600000 ; Expire 2592000 ) ; Minimum; Define the nameservers and the mail servers IN NS ns1.example.local. IN NS ns2.example.local. IN A 192.168.0.70 IN MX 10 mx.example.local.centos7 IN A 192.168.0.70mx IN A 192.168.0.50ns1 IN A 192.168.0.70ns2 IN A 192.168.0.80

b)创建反向域

[root@centos7 ~]# vi /var/named/chroot/var/named/192.168.0.zone

;; Addresses and other host information.;$TTL 86400@ IN SOA example.local. hostmaster.example.local. ( 2014101901 ; Serial 43200 ; Refresh 3600 ; Retry 3600000 ; Expire 2592000 ) ; Minimum0.168.192.in-addr.arpa. IN NS centos7.example.local.70.0.168.192.in-addr.arpa. IN PTR mx.example.local.70.0.168.192.in-addr.arpa. IN PTR ns1.example.local.80.0.168.192.in-addr.arpa. IN PTR ns2.example.local.。

1、[root@centos7 ~]# /usr/libexec/setup-named-chroot.sh /var/named/chroot on[root@centos7 ~]# systemctl stop named[root@centos7 ~]# systemctl disable named[root@centos7 ~]# systemctl start named-chroot[root@centos7 ~]# systemctl enable named-chrootln -s '/usr/lib/systemd/system/named-chroot.service' '/etc/systemd/system/multi-user.target.wants/named-chroot.service'