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centos修改主機名的正確方法

1 centos6下修改hostname

[[email protected] ~]$ hostname                                              # 檢視當前的hostnmae
centos6.magedu.com
[[email protected] ~]$ vim /etc/sysconfig/network                            # 編輯network檔案修改hostname行(重啟生效)
[[email protected] ~]$ cat /etc/sysconfig/network                            # 檢查修改
NETWORKING=yes
HOSTNAME=centos66.magedu.com
[
[email protected]
~]$ hostname centos66.magedu.com # 設定當前的hostname(立即生效) [[email protected] ~]$ vim /etc/hosts # 編輯hosts檔案,給127.0.0.1新增hostname [[email protected] ~]$ cat /etc/hosts # 檢查 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 centos66.magedu.com ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

2 centos7修改hostname

[[email protected] ~]$ hostnamectl set-hostname centos77.magedu.com             # 使用這個命令會立即生效且重啟也生效
[[email protected] ~]$ hostname                                                 # 檢視下
centos77.magedu.com
[[email protected] ~]$ vim /etc/hosts                                           # 編輯下hosts檔案, 給127.0.0.1新增hostname
[
[email protected]
~]$ cat /etc/hosts # 檢查 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 centos77.magedu.com ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6