本文将指导您通过四个步骤在CentOS系统中更改主机名：使用hostname命令设置新名称，编辑/hosts文件更新地址，修改/sysconfig/network文件调整配置，最后检查新的主机名。确保操作正确执行以避免系统问题。
Step 1: Use the hostname utility
Change your hostname to a different name of your choosing. For example:
hostname server01
Step 2: Edit /etc/hosts
Open the /etc/hosts file with your favorite text editor. For example:
nano /etc/hosts
Change the first line and replace your old hostname with the new one. Save the file and exit the editor.
Step 3: Edit /etc/sysconfig/network
This file also contains your hostname. Open the /etc/sysconfig/network file with your
favorite text editor.
Change HOSTNAME=vultr to your desired hostname. For example: HOSTNAME=server01.
Step 4: Check your hostname
Run the following command to check your new hostname:
hostname
The new hostname will be displayed in your ssh terminal.
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