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So now that we've talked about what we can expect from the actual examination,

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what I now want to do to walk you through the building of our little lab that

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we want to use

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to repair ourselves for the actual exam. Okay, so now we understand the general

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format of the

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examination. We've discussed some of the tips that we want to use to ensure

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that we have the best

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possible chance to actually pass the exam. What I now want to do is to walk you

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through what is

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going to be our little lab environment for running through our little exam

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preparation. So once again,

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what we're going to have is we're going to have three different nodes on our
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what we're going to have is we're going to have three different nodes on our

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network.

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One device is going to be the actual Ansible control node, which is what you

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actually see on

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your screen right here. This is my Ansible graphical user interface utilizing

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Red Hat Enterprise Linux.

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So this one here is actually using the graphical user interface installation.

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Now throughout this

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course, you will have noticed to keep things as simple as possible. And as

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graphically pleasing

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as possible, I actually had two other devices in my network, both of which were

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a graphical user

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interface. One was the blue box and the other one was known as the yellow box.
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interface. One was the blue box and the other one was known as the yellow box.

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Now in this upcoming

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little mock preparation that we're going to be doing, I'm not going to be

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managing the graphical

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user interfaces. That is because in the actual examination, we're going to be

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working with devices

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that have a minimal installation. So all I'm going to do is in the meantime, I

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'm going to create two

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new virtual machines. One can be called, let's maybe say device one, and the

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other one can be

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called device number two. And like I say, it's just going to be a minimal

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installation. So a pure

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command line interface environments, because quite honestly, this is a type of
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command line interface environments, because quite honestly, this is a type of

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environment,

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we're going to be testing our playbooks against any actual examination. So it

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does make sense that

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we are ensuring that our actual playbooks are operating as expected. Now for

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the purposes of

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configuring some storage solutions, what I'm also going to do is I'm also going

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to add another disk

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to my first device right here. Okay, so let me show you what this actually

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looks like. So in the

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interest of time, I'm not going to walk through the same type of installation

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that we saw before

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at the very beginning of this course. All I've done is made a slight difference
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at the very beginning of this course. All I've done is made a slight difference

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in the selection

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of choosing minimal installation versus graphical installation with respect to

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my managed devices.

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Here is device number one. And here is device number two. Both, as you can see

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here are these

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boring plain old black and white text environments. Number three, respect to my

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rail control node,

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I'm actually using the same machine that I used before. All I've done is I've

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reverted it back

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to an initial snapshot. So it doesn't actually have any answer once all done it

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. It doesn't have

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any configuration files. I'm going to walk through all of that from the
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any configuration files. I'm going to walk through all of that from the

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beginning. So if you're

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following along, pretty much have your answer control node at its very basic

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stage, just have

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your installation of your graphical user interface, and then create these new

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two graphical user

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interfaces that you're going to manage. Now in my case, in all my three

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machines, I have created a

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device or rather an account on each of the devices called nugget user. And this

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user

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has actually got super user access. So it is going to be able to run those

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admin commands.

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Now there is nothing special about this particular username. It's just a simple
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Now there is nothing special about this particular username. It's just a simple

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username that I

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happen to choose. If you want to choose a different one, then feel free to do

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so. All I would say

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is to ensure that whatever name you choose, have it present on all three

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devices and make sure

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that that particular user is a pseudo or user. So it can use the pseudo

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commands. So with that

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now done, what I'm first going to do here is just for posterity, I will just

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actually change the name

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of this device here from red box. This is I'm not using this color based lab

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anymore red box,

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blue box yellow box. Let me just call this, or just a pseudo hostname cta set
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blue box yellow box. Let me just call this, or just a pseudo hostname cta set

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hyphen hostname.

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And I'll just change this to control because it's going to be the control mode

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and I'll type in my

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super user password. Now it looks like nothing has actually changed. But if I

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just type the command

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hostname, we can see it has changed. If I X out this particular terminal, and I

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just open up a

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fresh one like so, now you'll notice the actual username here or rather the

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device name has

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actually changed. So the very first thing that I want to do is I want to be

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able to configure my

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host to have my DNS mappings to keep things nice and simple. So all I will do
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host to have my DNS mappings to keep things nice and simple. So all I will do

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here is I will say

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pseudo them, it's a hosts, and I'll type in my password here. Now over on my

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device one, if I type

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IP adder, we can actually see the IP address here is 192.168.160.136. And if I

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just great for this to keep

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things nice and simple, there is IP address right there. So I want to put that

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in and map it to

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my hostname of device one. Similarly over on device number two, we can see the

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address ends in

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.137. Let's also map that. So I will just say 192.168.168.136. And this is
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.137. Let's also map that. So I will just say 192.168.168.136. And this is

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going to map to device number

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one. And then 192.168.168.137 is going to map device number two. So if I just

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write and quit,

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and I just say ping device number one right here and to enter, we can see we do

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get a response.

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If I press control C, R what we can change it to device number two, we also get

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a response from

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device, the mapping is working correctly. So check it out then. What I now want

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to do is I want to

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create an answerable account on every device in the network that is the control
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create an answerable account on every device in the network that is the control

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node and the two

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managed nodes. And we want to specify that we can have super user privileges.

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And the answerable

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is going to be able to log in to these devices utilizing the SSH keys. So the

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very first thing

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that I'm going to have to do here is on my control node, I'm going to add a

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user called answerable.

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And then I will say pseudo past wd for the answerable user to actually give the

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account a password.

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And I'll just give it the password of answerable and they'll confirm it as

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answerable. And now

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what I want to do is I want to give this particular account a super user access
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what I want to do is I want to give this particular account a super user access

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. So I can say pseudo

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vim, it's a pseudo words dot D. And I will just specify the name of the account

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I want to be

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using so I'll say answerable. Now inside of here, I'm just going to say answer

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able, which is the

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name of the account. And to give it all of the super user access, I will say

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all equals and then

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in parentheses, all, and then I'll say no past wd column. All this is going to

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allow us to run

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the super user command without having to enter a password. So let's just write

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and quit. So now

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if I just happen to say SU minus answerable, we substitute user to the answer
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if I just happen to say SU minus answerable, we substitute user to the answer

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block out when we

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type in our answerable password. And now we can see here I am answerable on the

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control node. Now

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what you want to ensure is that you have answerable installed on the system.

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Again, we've seen how

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to do this. So I'm not going to bore you by going through the installation all

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over again. Right now

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we can act to see my version as well as what my configuration file is. But what

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I want to do though,

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as I actually want to specify a particular inventory file that you're going to

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create. So take this

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particular part much like a little challenge that you could expect to see

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within the examination.
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within the examination.

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So here's what I'm asking you to do. What I want you to do is to create an

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answerable

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inventory file and inside of it, I want you to have three different groups. So

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what we want to have

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is we want to have a test group as well as a production group. Now inside of

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the test group,

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I want you to place the device one host. Okay. So device one will be a member

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of that group.

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And similarly, device two should be a member of the production group. Now here

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's the thing,

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both of these groups, the test and production should actually belong to a
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both of these groups, the test and production should actually belong to a

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parent group. And

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this group is simply going to be called rel_service. So for now, what I'm going

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to do is to pause the

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video and at home, I want you to follow along and complete this part of the

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actual task.