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title: "CentOS 7 系统修改服务器主机名 - 一纸忘忧"
description: "最近看到好多 IDC 厂家的主机名都是 localhost.localdomain，强迫症的我觉得这名字太长了，看着碍眼，于是就搜了些资料来修改这个主机名，我总结了一下，写了个可行的教程，下面就来和大家分享一下。"
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# **CentOS 7 系统修改服务器主机名**

2017.05.27 4,225  0

最近看到好多 IDC 厂家的主机名都是 `localhost.localdomain`，强迫症的我觉得这名字太长了，看着碍眼，于是就搜了些资料来修改这个主机名，我总结了一下，写了个可行的教程，下面就来和大家分享一下。

由于 CentOS 7.x 系列更改了主机名机制，所以本教程只适用于 6.x 系列，至于能不能在 5.x 上面使用，大家自行测试吧。

## 教程

1. 用 SFTP 连接上 SSH，将 `/etc/sysconfig/` 路径下的 `network` 文件下载出来。
2. 用一些专业的编辑器（除记事本）打开该文件，里面有一行：

 Plain Text

```
HOSTNAME=localhost.localdomain
```

修改 `localhost.localdomain` 为你想设置的主机名。

3. 将 `/etc/` 路径下的 `hosts` 文件下载出来。
4. 将所有 `localhost.localdomain` 改为你想设置的主机名。
5. 重启后用 `uname -n` 命令查看当前主机名。

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