Use of Hostnamectl in CentOS 7

Hostnamectl is a newly added command in Centos7, it is used to modify the host name, CENTOS7 modifying the host name will be much easier than ever.

usage

# hostnamectl-h  -H--help              Display Help     --version           Displays the version of the installation package     --transient Modify the         temporary hostname     --static            Modify the transient hostname     --pretty            Modify the flexible hostname  -P--privileged the        privileges obtained before execution     --no-ask-password Enter the   password without prompting -  H--host=[[email protected]]host  operation remote host commands:  status                 Display current hostname settings  set-hostname name Set      the system hostname  set-icon-name Name set     the host       platform type name for the host setting icon name Set-chassis name

There are three definitions of host names in CentOS7: static, transient (transient), and flexible (pretty). The static hostname, also known as the kernel hostname, is the hostname that the system automatically initializes from within/etc/hostname at startup. A transient hostname is a host name that is temporarily assigned when the system is running. A flexible hostname allows the use of a host name with special characters.

Common Commands 1. View status

# Hostnamectl or # Hostnamectl status   (shows the same results)   Static hostname:localhost.localdomain         Icon Name: COMPUTER-VM           CHASSIS:VM Machine        id:049717292ec9452890e50401d432e43c           Boot ID: 2e69a66a7c724db6a44a8536f1670f7f    VIRTUALIZATION:KVM  Operating system:centos Linux 7 (Core)       CPE OS Name: Cpe:/o:centos:centos:7            kernel:linux 3.10.0-229.el7.x86_64      architecture:x86_64

2. Modify the host name

# hostnamectl set-hostname linuxprobe# hostnamectl status   Static hostname:linuxprobe pretty   hostname: Linuxprobe         Icon name:computer-vm           chassis:vm machine        id:dc99c115d7414d159fa4c5c0c0541c55           Boot ID: 6236b67c13af4d98b5fa3780e66dfdeb    VIRTUALIZATION:KVM  Operating system:centos Linux 7 (Core)       CPE OS Name: Cpe:/o:centos:centos:7            kernel:linux 3.10.0-229.el7.x86_64      architecture:x86_64

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Use of Hostnamectl in CentOS 7