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- In this video, I'm going
to show you how to use

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cloud-init to customize images.

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Cloud-init itself, is an
infrastructure as code solution,

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and it allows the user to
easily deploy virtual machines

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on supported platforms.

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And these supported platforms include:

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KVM, OpenStack, AWS,

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Microsoft Azure, just to
mention a couple of them.

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And there's more.

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Do notice, that due to a
bug cloud-init currently,

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does not work in VMware
workstation or Fusion.

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I can show you what to do,

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but you might be in a situation,
where it doesn't work.

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So how do you use cloud-init?

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Well, to deploy a virtual
machine with cloud-init,

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you'll need to create a YAML file,

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containing installation instructions.

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And a (simple) example, YAML is provided

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as user-data.yaml in the
course git repository.

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You can find it at
github.com/sandervanvugt/lfcs,

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and use this YAML, in a
virt-install command for a fully

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automated installation of
a virtual machine in KVM.

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Let me demonstrate how that works.

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For your convenience here
are the steps in the demo.

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So first, we need to clone
the git course repository.

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Oh, it's already there.

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Well, that makes it even easier.

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So in this git course repository

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we have this user-data.YAML.

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In the user-data .YAML
is a very simple YAML

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that is providing the
cloud in its configuration.

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So, we have a default_username admin

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and this default_user needs to be a member

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of the group wheel.

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Now, in order to do this,
next we need a qcow2 image,

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for a virtual machine that we
are going to install in KVM.

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So next, we need W gits to,
actually get a qcow2 image

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that we are going to
use, with cloud in it.

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All right, so in the previous video,

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you have seen how we can
create a virtual machine,

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using Virt-Manager.

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Here, we do everything command
line, using Virt-install.

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Now, Virt-install needs
a couple of arguments.

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The name of the machine, you
want to create the amount

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of memory, which by default
is expressed in megabytes.

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The VCPUs, whether or
not you want to attach

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a graphical console, always
variant detect is on,

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which will automatically
find the operating system,

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the disc that you are going to create.

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So in this case it will
be a file with the name

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fedora01.qcow, and the size of the disk,

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which is expressing in gigabytes.

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Then we need to specify the console,

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the console type,

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which is virtio,

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the serial port N, and last
but not least, is cloud-init,

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use data, it's user data.yaml.

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Now the essence of this command,

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is that you can do a fully,
unattended installation.

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So once you hit enter, the installation

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of the virtual machine will
start, fully unattended.

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And if all goes well, at the end,

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you have a working virtual machine.