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So friends, let's begin this subject by discussing the whole concept of

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partitions.

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What are they actually used for? Why do we even need them in the first place?

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But really, when we're thinking about why we need a partition, primarily,

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it's going to allow us to organize our data.

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And the way this actually happens is via segmentation on the physical disk.

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So let's maybe say we happen to have a disk right here.

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This could just be a regular hard drive.

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Now suppose this is just one large disk that happens to be completely unpart
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Now suppose this is just one large disk that happens to be completely unpart

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itioned.

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So what do we actually have on this disk?

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What we're going to have, let's maybe say our operating system, the OS.

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And let's also say we happen to have some data on the disk.

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So that could be just your regular files, perhaps maybe some pictures, maybe

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some MP3s,

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that type of thing.

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Now as it transpires right here, because we have no separation between the

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actual operating system

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and the data, as we begin to write more and more data on the disk, things as

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you can see here,

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gradually become more and more cluttered.
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gradually become more and more cluttered.

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And eventually as the disk gets filled up with more and more data,

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eventually the disk becomes to become overrun and it effectively bogs it down.

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Now the good news is, is that we do not actually have to contend with this in

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the real world.

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We don't really operate in such a way.

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So what does it we do?

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Well, you guessed it.

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We make use of partitions.

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Let's then reimagine the same type of scenario this time using the concept of

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partitions.

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So let's draw out our circle right here representing our hard disk.

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And just like you would with a pizza, let's say we wanted to slice this up and
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And just like you would with a pizza, let's say we wanted to slice this up and

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subdivide it.

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In this case here, the way we are subdividing it is via the use of the

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partitions themselves.

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So let's just take this chunk right here.

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Let's imagine we have a quarter of the disk and we say, hey, on that particular

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partition,

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all we want to have is the operating system itself.

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It's going to have its own little segmentation.

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And let's maybe say for the rest of the disk, we're just going to use it to

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store data.

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Now perhaps in the real world, maybe you would like to subdivide the disk into

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many more slices.
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many more slices.

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Maybe we've got a slice here and another slice here and perhaps another chunk

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here and here, whatever it may be.

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But just for the illustration, let's just say we just have these two partitions

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,

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a partition dedicated for the operating system and another for the data.

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What the net effect is here is as we write more and more data onto the disk, as

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we saw before,

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you know, data here, data here, and it begins to fill all this partition up.

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The difference here is that we actually have this type of physical boundary as

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set out by the partition itself.
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set out by the partition itself.

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So we're never, ever, ever going to be writing data into this particular

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section of the disk

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because it has been partitioned off and is used for something entirely

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different.

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This is the organization and segmentation that I was talking about.

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Now, of course, once again, if you want to get a little bit more creative and

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inventive with the partitions,

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you could have maybe a book partition.

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Maybe you want to have a partition that is designed for backups.

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And hey, maybe you just want to utilize partitioning for the security aspects

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of having that isolation
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of having that isolation

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so that sensitive data is kept separate from the rest of the system.

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So these are just some of the reasons why we would maybe want to utilize

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partitioning.

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Let's briefly discuss what different types of partitioning tables we can

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actually use.

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So depending on the type of firmware on the system,

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so if you happen to have an older system, which is utilizing the BIOS firmware,

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the type of partitioning table that you would want to be using would be

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something known as the MBR.

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This is the master boot record.

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Now, the master boot record style of partitioning is a lot more limited than
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Now, the master boot record style of partitioning is a lot more limited than

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the more modern version

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in the sense that we only have support for four partitions.

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Or more accurately, should I say, we have the option for four primary

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partitions.

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Now, when I'm talking about a primary partition, I'm talking about the type of

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partition

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that is capable of booting an operating system.

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Now, if you happen to recall from your red hat, certified system admin studies,

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you can kind of get around this limitation by creating three primary partitions

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.

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And then you can add in what is known as one logical extended partition.
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And then you can add in what is known as one logical extended partition.

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Now, this particular partition here can actually be further subdivided into

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many more volumes,

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which pretty much allows you to have many more little storage containers,

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so to speak, whereas on modern systems, if you happen to be utilizing the UEFI

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firmware,

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which is much, much more common as we see nowadays,

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we have the ability for the support of a GPT style partitioning,

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which is much more advanced, much more expressive and has support for 128
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which is much more advanced, much more expressive and has support for 128

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partitions,

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much, much better than the four partitions offered by MBR.

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So these are the types of partitioning tables we can actually create.

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The question, therefore, is how do we actually create these particular

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partitions?

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Well, as is so often the case in Linux, we have many different utilities to do

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similar jobs.

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We can utilize something known as F-disc, which was originally developed just

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to create MBR style partitions.

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And then we had tools such as G-disc come out, which supported GPT style

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partitioning,

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as well as another utility known as Parted, which is the partition editor.
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as well as another utility known as Parted, which is the partition editor.

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Now, in the case of Ansible, the partitioning tool that we're going to be

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focusing on is Parted.

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This one here is the one we're going to be using within our Playbooks.

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So in order to help us work with our lab environment,

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what we want to do is you want to add additional disks to our virtual machines.

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Now, you can add as many new disks as you want to as many virtual machines,

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but at least at a very minimum, add one disk to one of your machines.

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So let me show you how I can do this here on VM,
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So let me show you how I can do this here on VM,

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where if I go to one of my devices that are going to be managed by Ansible,

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which in my case here is my blue box, if I go to settings, and then I go down

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to hard disk,

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and I choose add device, and then I say new hard disk, and then select add.

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What it's going to prompt me to do is to specify the size of the disk that I

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want to create.

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Now, by default, as we can see here, it's going to create a disk of 20 gig and

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size that is way more than I need.

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So I'm just going to move it down to let's maybe just say one gig.
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So I'm just going to move it down to let's maybe just say one gig.

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Okay. So with that now done, I'm going to choose apply.

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All I'm going to do here is press X, and then I will just start up my machine.

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So if I go to my terminal right here, and I just say the command man part it's,

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we can see the manual page for the utility that we want to be using a partition

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manipulation program.

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Now it says if we do dash L, we can actually list the partition layouts on all

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the block devices.

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So let's try that.

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Okay. So I will say pseudo parted dash L, and now I'll type in my super user

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password right here.
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password right here.

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Now look at this right here.

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It tells us the summary of our disks right here.

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We have one particular disk here, which is going to be our book partition.

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This is the fat 32,000 system, and then we have this one here number three.

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This is LVM, our logical volume management.

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We'll talk about that in a little bit more detail within this very scale.

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The one that I just added was this one right here, you see that 174 meg, which

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is one gig.

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Now also an output here, we can actually see the contents, which is a device is

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in dev NVM E 0 N2.
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in dev NVM E 0 N2.

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Now this is because I happen to be using a solid state drive,

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whereas if you happen to use a traditional hard disk,

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you might see the option as dev SDB.

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The name itself doesn't actually matter just as long as you know to reference

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the correct device,

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whatever the name happens to be.

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So now we have this unpartitioned physical disk.

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What we want to do is to make use of the part of tool to actually write the

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partition onto the disk itself.

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Now the first thing we're going to do is to quickly see this manually,
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Now the first thing we're going to do is to quickly see this manually,

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and then we'll be able to walk through the tasks or rather these steps

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in order to complete this task via automation using Ansible.

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So all I'm going to do here is copy the name of the disk that I want to target

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and partition.

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All I will do is I will say sudo part it and then paste in the name of the

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device itself.

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So let's hit enter.

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We now go into this interactive menu.

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If I say help, we can see all of the available options.

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And the case here, what I want to do is to create a new disk label to generate

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a partition table.

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Okay, so I can say help MK label.
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Okay, so I can say help MK label.

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We can see all of the available labels that we have here.

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If I want to choose GPT, this is one of the options I have available to me.

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So I can say MK label GPT.

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I can say help on MK parts.

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We can see the types of partitions that I can create would be a primary

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partition

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or a logical or extended partition, just like we talked before.

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So now I will say MK parts primary to make a primary partition.

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It is suggesting the file system type to be EXT2, which is very, very outdated.

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Much more likely you would choose EXT4 or in the case of my railbase system.
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Much more likely you would choose EXT4 or in the case of my railbase system.

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I'm going to choose XFS.

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Now I'm going to specify where the partition should start.

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So I will say 0%, which is at the very start of the partition.

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And I want to use the entire partition.

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So I will say the end will be 100% of the disk.

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If with that now done, if I select prints, this here is going to be our

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partition disk.

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And now what I can do is press quit to write the changes.

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And now if I say pseudo-parted dash L, type in my passwords.

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And now this particular disk here is using the GPT partition style.
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And now this particular disk here is using the GPT partition style.

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It is a primary partition, meaning that it can support an operating system.

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And we are using the entire disk.

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If we so wish though, we could have subdivided this disk into small partitions

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for different purposes.

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This here though is ultimately the process that we want to automate.

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So now if I use part of on the same disk, and I just say print, we can actually

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see the partition number, which is number 1.

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The very first partition makes sense.

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We only have one.

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Now what I can do here is just say RM to remove and then specify the number of

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the partition.
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the partition.

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So if I say RM 1 and to enter, now what I can do is press quit.

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And if I now re-list my part of information, now we have actually removed that

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particular partition.

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So now that we have the primer on partitions and the use of the part of utility

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out the way,

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let's now walk through the automation of this particular process next.