centos7修改主机名

hostnamectl --static set-hostname host4.centos7
vim /etc/hosts

root@host1 ~]#vim /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4 host1.centos7
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

hostnamectl --static set-hostname host1.centos7