Linux(CentOS)如何安装DNS服务器?

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  DNS其实就是系统上的一个占用53端口的服务,用来提供域名和IP地址的相互转换。比如你访问ip.gs,路由器是不可能知道这个地址,你需要先连接到DNS服务器,DNS服务器会返回ip.gs的IP地址,这样在网上就可以正常的路由了。那么,Linux(CentOS)如何安装DNS服务器呢?我们一起往下看看。

  方法步骤

  1、输入“yum install -y bind bind-chroot bind-utils”并按回车键开始安装;

  2、提示安装完毕;

  3、安全起见安装完毕后将自动创建用户named,输入“grep “named” /etc/passwd”查看;

  4、安装后默认已经列出所有跟域名服务器,输入“vi /var/named/named.ca”并按回车键查看;

  5、文件内容大致如下;

  6、因安装了bind-chroot,故named的根路径为/var/named/chroot。可输入“cat /etc/sysconfig/named | egrep ‘^ROOTDIR’”查看;

  7、因/var/named/chroot/etc/目录默认无配置文件,故输入“cp -rv /usr/share/doc/bind-9.8.2/sample/etc/* /var/named/chroot/etc/”复制etc目录里所有文件;

  8、同理输入“cp -rv /usr/share/doc/bind-9.8.2/sample/var/* /var/named/chroot/var/”复制var目录里所有文件;

  9、输入“chown root.named /var/named/chroot/etc/named.conf”修改文件named.conf的所有者为named;

  10、输入“ll /var/named/chroot/etc/named.conf”查看是否修改成功;

  11、输入“vi /var/named/chroot/etc/named.conf”开始编辑此文件;

  12、默认文件内容类似下图;

  13、查找以下内容(/allow-query);

  14、根据您的需要进行修改(本例中为添加192.168.1.0/24网段);

  15、输入“cp /var/named/chroot/var/named/named.localhost /var/named/chroot/var/named/ytyzx.net.zone”复制named.localhost并重命名为ytyzx.net.zone。

  以上就是Linux(CentOS)安装DNS服务器的具体方法,按照以上方法进行操作,就能轻松安装好DNS服务器了。

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