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https://www.cnblogs.com/zhaojiedi1992/p/zhaojiedi_linux_043_hostname.html
1 centos6下修改hostname
[root@centos6 ~]$ hostname # 查看当前的hostnmae centos6.magedu.com [root@centos6 ~]$ vim /etc/sysconfig/network # 编辑network文件修改hostname行(重启生效) [root@centos6 ~]$ cat /etc/sysconfig/network # 检查修改 NETWORKING=yes HOSTNAME=centos66.magedu.com [root@centos6 ~]$ hostname centos66.magedu.com # 设置当前的hostname(立即生效) [root@centos6 ~]$ vim /etc/hosts # 编辑hosts文件,给127.0.0.1添加hostname [root@centos6 ~]$ cat /etc/hosts # 检查 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
[root@centos7 ~]$ hostnamectl set-hostname centos77.magedu.com # 使用这个命令会立即生效且重启也生效 [root@centos7 ~]$ hostname # 查看下 centos77.magedu.com [root@centos7 ~]$ vim /etc/hosts # 编辑下hosts文件, 给127.0.0.1添加hostname [root@centos7 ~]$ cat /etc/hosts # 检查 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 centos77.magedu.com ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
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