本文共 2637 字，大约阅读时间需要 8 分钟。
rhel7 很多命令和rhel6 都不一样了，大家需要学习喽。
先从hostnamectl 开始哈
[root@roidb02 ~]# hostnamectl
Static hostname: roidb02 Icon name: computer-vm Chassis: vm Machine ID: c3e6a26e2e00481f928f0c38b97cf5ab Boot ID: f7d681692d96485ea81b3524c7743647 Virtualization: kvm Operating System: Red Hat Enterprise Linux Server 7.3 (Maipo) CPE OS Name: cpe:/o:redhat:enterprise_linux:7.3:GA:server Kernel: Linux 3.10.0-514.el7.x86_64 Architecture: x86-64 [root@roidb02 ~]# hostnamectl status Static hostname: roidb02 Icon name: computer-vm Chassis: vm Machine ID: c3e6a26e2e00481f928f0c38b97cf5ab Boot ID: f7d681692d96485ea81b3524c7743647 Virtualization: kvm Operating System: Red Hat Enterprise Linux Server 7.3 (Maipo) CPE OS Name: cpe:/o:redhat:enterprise_linux:7.3:GA:server Kernel: Linux 3.10.0-514.el7.x86_64 Architecture: x86-64 [root@roidb02 ~]# hostnamectl --help 帮助非常重要啊 hostnamectl [OPTIONS...] COMMAND ... Query or change system hostname. -h --help Show this help --version Show package version --no-ask-password Do not prompt for password -H --host=[USER@]HOST Operate on remote host -M --machine=CONTAINER Operate on local container --transient Only set transient hostname --static Only set static hostname --pretty Only set pretty hostname Commands: status Show current hostname settings set-hostname NAME Set system hostname set-icon-name NAME Set icon name for host set-chassis NAME Set chassis type for host set-deployment NAME Set deployment environment for host set-location NAME Set location for host [root@roidb02 ~]# cat /etc/hostname --配置文件 roidb02[root@roidb02 ~]# hostnamectl set-hostname roidb01 [root@roidb02 ~]# cat /etc/hostname --配置文件直接生效了有没有 roidb01 [root@roidb02 ~]# cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 [root@roidb02 ~]# [root@roidb02 ~]# [root@roidb02 ~]# init 6 --重启验证 Last login: Sun Oct 15 07:23:33 2017 from gateway 不拉不拉省略...........................
[root@roidb01 ~]#
[root@roidb01 ~]# [root@roidb01 ~]# [root@roidb01 ~]# [root@roidb01 ~]# [root@roidb01 ~]# hostnamectl Static hostname: roidb01 Icon name: computer-vm Chassis: vm Machine ID: c3e6a26e2e00481f928f0c38b97cf5ab Boot ID: ec156edd01a84bdf8a4d8c91350a2ef2 Virtualization: kvm Operating System: Red Hat Enterprise Linux Server 7.3 (Maipo) CPE OS Name: cpe:/o:redhat:enterprise_linux:7.3:GA:server Kernel: Linux 3.10.0-514.el7.x86_64 Architecture: x86-64[root@roidb01 ~]# cat /etc/hostname roidb01 [root@roidb01 ~]#小视频网盘地址：链接：http://pan.baidu.com/s/1i5pa4yL 密码：em8x