centos7 修改主机名

@ centos 7 修改主机名
centos 7 下
hostnamectl set-hostname centos123 修改主机名， 立刻生效且重启有效

[[email protected] ~]# hostnamectl set-hostname centos132
[[email protected] ~]# hostnamectl
  Static hostname: centos132
        Icon name: computer-vm
          Chassis: vm
       Machine ID: 66bbcb439432451d93debc3d5d9b6278
          Boot ID: 76b0c9f77bb74eef9de7076e579a1f8b
   Virtualization: vmware
 Operating System: CentOS Linux 7 (Core)
      CPE OS Name: cpe:/o:centos:centos:7
           Kernel: Linux 3.10.0-514.el7.x86_64
     Architecture: x86-64
[[email protected] ~]# ^C