In this video, you'll learn about advanced installation using kickstart and image mode.
Well, I'll tell you what it is, and later in this course, you will find a separate lesson
about image mode, because it's an important new feature.
So kickstart is what allows for automated installation.
And in a kickstart installation, a configuration file is used that defines all settings to
be used while installing, and this facilitates installations of many servers.
Image mode replaces the actual installation of RHEL with a container image.
So you don't install it in that case, you deploy it in that case, and that brings several
benefits about which you will learn more in the image mode lesson later in this course.
Now the result is a largely read-only container image that is used to boot the physical host.
And for more details, consult lesson 33 in this class.
Before going over to the lab, let me show you one little thing about kickstart.
So here, I'm back on my freshly installed RHEL server, and I'm going to open a terminal
using control shift plus to zoom in a little bit, and then I'm using sudo minus I to open
a root shell.
Now I just told you logging in as root is bad.
Using a root shell is a different story, and for your RHCSA exam, I would advise you
do all your work from a root shell.
It's about system administration after all.
Now we'll talk about that in more detail later, but I wanted to show you the contents of the
root user home directory, where we have an anaconda-ks.cfg.
Now that is the kickstart configuration file, and in that kickstart configuration file,
you can find an overview of all the settings that have been used to install this system.
And the fun thing is, if you refer to this kickstart installation file for installing
another server, you can fully automate that installation.
In lesson 33, we'll work out an example where you need to do something with this kickstart
installation file as well.