Using ip and hostnamectl
Many administrators on Linux have become used to using the ifconfig
command in order to display and set IP addresses on Linux hosts. Although the ifconfig
command is still valid, it's marked as obsolete in favor of the ip
command. For Microsoft Windows administrators who move to Linux, the use of ifconfig
becomes the obvious choice. As ipconfig
closely resembles the Windows command line, I encourage you to learn the ongoing ip
command and all that it has to offer. Using either the ifconfig
or ip
command on RHEL 7 will also introduce new, consistent device names. This may come as a little shock to those used to /dev/eth0
.
Finally, we will look at something very new to RHEL using the hostnamectl
command. This can be used to set the hostname
for the current session and persistently in a single shot, rather than using the hostname
command and editing the /etc/hostname
file.
Consistent naming for network devices
With the hardware that we have on servers and desktops...