Centos7 修改主机名

查看主机名、内核信息

[root@iZ2ze9lpuyxnf8j4d15vkgZ ~]# uname -a
Linux iZ2ze9lpuyxnf8j4d15vkgZ 3.10.0-957.21.3.el7.x86_64 #1 SMP Tue Jun 18 16:35:19 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

查看系统版本

[root@iZ2ze9lpuyxnf8j4d15vkgZ ~]# cat /etc/redhat-release
CentOS Linux release 7.6.1810 (Core)

修改主机名

[root@iZ2ze9lpuyxnf8j4d15vkgZ ~]# hostnamectl set-hostname 新主机名