Hostnamectl: Difference between revisions
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hostnamectl set-hostname docker-server.local | hostnamectl set-hostname docker-server.local | ||
</pre> | </pre> | ||
This commands changes all the hostnames ([[Linux Hostname#static_hostname|static]], [[Linux Hostname#pretty_hostname|pretty]] and [[Linux Hostname#transient_hostname|transient]]) of the system. | |||
==hostnamectl set-hostname and /etc/hosts== | |||
Note that changing the host name with <tt>hostnamectl set-hostname</tt> does not update <tt>/etc/hosts</tt> so you may want to review <tt>/etc/hosts</tt> and change the mapping of the host's network interface addresses to the new name. | |||
<font color=red> | <font color=red> | ||
Revision as of 02:12, 4 April 2017
External
- http://man7.org/linux/man-pages/man1/hostnamectl.1.html
- http://man7.org/linux/man-pages/man8/systemd-hostnamed.8.html
Internal
Overview
Change the Host Name
The preferred way to change a host name is with hostnamectl as follows:
hostnamectl set-hostname <name>
Example:
hostnamectl set-hostname docker-server.local
This commands changes all the hostnames (static, pretty and transient) of the system.
hostnamectl set-hostname and /etc/hosts
Note that changing the host name with hostnamectl set-hostname does not update /etc/hosts so you may want to review /etc/hosts and change the mapping of the host's network interface addresses to the new name.
Add or edit HOSTNAME in /etc/sysconfig/network:
NETWORKING=yes GATEWAY=192.168.0.1 ... HOSTNAME=not500.localdomain
Update /etc/hosts as follows:
127.0.0.1 not500.localdomain not500 localhost localhost.localdomain ... ::1 not500.localdomain not500 localhost localhost.localdomain ...
Optionally you could resolve the name to the IP address of the primary network interface.
Run hostname to set the name for the current session. You may also want to run hostnamectl to update /etc/hostname.
If the Name is Publicly Resolved by DNS
TODO http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/set-hostname.html
Setting the Name
hostnamectl [--static|--pretty|--transient] set-hostname blah