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设置 FQDN

tag-icon • tag-icon linux debian redhat hostname domain-name
设置 FQDN

与主机名类似，可以通过不同的方式更改：

  • 暂时使用hostname命令
  • 永久使用/etc/hostname（或者/etc/sysconfig/network或/etc/HOSTNAME，这些文件由 init 脚本使用）

我想更改我的域名。我可以使用命令domainname，但是有没有办法让它在重启后永久生效？我认为可以在中配置，/etc/resolv.conf但这个文件通常是生成的，我不知道search和domain指令之间的确切区别。那里的信息到底在什么时候传递给domainname程序来设置域名？

你对此有什么想法吗？

我希望在各个发行版之间保持最大程度的兼容性。因此，如果有人对不同的发行版风格有建议，我很乐意接受。

答案1

设置 FQDN

我正在使用 Debian 7，这是对我有用的；感谢费尔南多·里贝罗。

sudoedit /etc/主机名

server # here's where you put the server's host name

激活主机名

sudo 主机名 -F /etc/主机名

将域名和地址添加到服务器

sudo编辑/etc/hosts

192.168.1.2   server.domain server

核实

> hostname --short
server

> hostname --domain
domain

> hostname --fqdn
server.domain

> hostname --ip-address
192.168.1.2

答案2

man hostname，从尾到头被引用

FILES
       /etc/hostname  Historically  this file was supposed to only contain the hostname and not the full canonical
       FQDN. Nowadays most software is able to cope with a full FQDN here. This file is read at boot time  by  the
       system initialization scripts to set the hostname.

       /etc/hosts Usually, this is where one sets the domain name by aliasing the host name to the FQDN.

…

   THE FQDN
       The  FQDN (Fully Qualified Domain Name) of the system is the name that the resolver(3) returns for the host
       name, such as, ursula.example.com.  It is usually the hostname followed by the DNS domain  name  (the  part
       after the first dot).  You can check the FQDN using hostname --fqdn or the domain name using dnsdomainname.

       You cannot change the FQDN with hostname or dnsdomainname.

       The recommended method of setting the FQDN is to make the hostname be an alias for the fully qualified name
       using /etc/hosts, DNS, or NIS. For example, if the  hostname  was  "ursula",  one  might  have  a  line  in
       /etc/hosts which reads

              127.0.1.1    ursula.example.com ursula

       Technically: The FQDN is the name getaddrinfo(3) returns for the host name returned by gethostname(2).  The
       DNS domain name is the part after the first dot.

       Therefore it depends on the configuration of the resolver (usually in /etc/host.conf) how  you  can  change
       it.  Usually  the  hosts  file  is  parsed  before  DNS  or NIS, so it is most common to change the FQDN in
       /etc/hosts.

       If a machine has multiple network interfaces/addresses or is used in a  mobile  environment,  then  it  may
       either  have  multiple  FQDNs/domain  names or none at all. Therefore avoid using hostname --fqdn, hostname
       --domain and dnsdomainname.  hostname --ip-address is subject to the  same  limitations  so  it  should  be
       avoided as well.

我想说它确实彻底描述了整个事情。

答案3

当您使用redhat-base系统时，linux 使用/etc/sysconfig/network文件，您应该将变量设置HOSTNAME为FQDN，当您使用时FQDN，linux它本身就确定域名。

例如：

HOSTNAME=web.mydomain.com

但是当您使用debian-base系统时，您应该在文件中填充/etc/hostname以下内容FQDN：

web.mydomain.com

笔记：如果要设置，domain name请确保设置FQDN（完全合格的域名）

当您设置时，hostname -d会显示domain name。

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