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and welcome back to Backspace Academy in
this hands-on lecture on creating a

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custom ami
we're going to be creating a node.js

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server from scratch using the EC2
service so we're not going to be using a

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pre-baked AMI so before we use the
backspace nodejs ami we're going to be

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making this from scratch so we're going
to launch and ec2 Amazon Linux instance

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and then we're going to put the software
that we need on that instance and then

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we're going to create an ami from that
instance and then we'll use that ami to

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launch another nodejs server and then
we'll also look at copying this ami over

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to another region so I'm just in the ec2
management console I'm just going to

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quickly launch an instance using the
Amazon Linux ami and that will be a tee

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to micro instance and I need to make
sure that we have a public IP address

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assigned to this this instance the leaf
storage and tags as they are but we need

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to create a new security group it's
going to call a test and I'll just leave

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the description as it is here that's
fine so we need to have SSH access

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obviously to connect in and operate our
instance so we'll leave that as a user

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but we also need to have access from the
wider internet to come in because it is

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a web server that we're creating a
node.js web server so we need to have

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HTTP access on port 80 and that's for
for everything to come in so now that

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we've got those two rules set up we can
review and launch and then launch our

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instance we'll use a key pair that we've
already got

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if not we'll create one so this is
launcher instance

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now once our instance is up and running
I'm just going to get the connection

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command that I need so just click on
connect after we have selected an

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instance I'm just going to copy they can
connection command here and use that in

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a terminal screen to connect into this
instance

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ok so I've just opened a terminal screen
and I've navigated to the location of my

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key pairs that I'm using to connecting
to this ec2 instance so I'm just going

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to paste in that connection string and
hopefully connecting and there we are if

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connected in so the first thing I want
to do with this Linux instance is to

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update it so sudo yum update and - by
just to say yes all the time

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so after a certain amount of time we're
going to have our you mate they

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completed now the first thing we need to
do is that we need to set up our Linux

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firewall settings now being a NodeJS
server it will be expecting, or the way

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that we will set up our nodejs sample
app is it will be expecting traffic to

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come in on 8080 but our web traffic will
be coming in on port 80 so what we need

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to do is we need to set up IP forwarding
from port 80 the traffic coming in and

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forward that on to nodejs through the
linux operating system to port 8080 and

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then we need to enable port 80 access in
our firewall setting so the first thing

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we need to do is set up IP forwarding and we use
that command there and that's the same

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command that we used in the previous
lesson on on creating a node.js

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environment so just go back to the notes
and you'll have that in those notes and

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then accept traffic inbound on our port
80 and again there we put that in on our

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output so there is our instances now set
up in the Linux operating system to

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accept traffic on port 80 it will
redirect that traffic across to port

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8080 to enable
nodejs to receive that traffic. Now the

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next thing we're going to do is we're
going to install nodejs the latest

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version of nodejs
on this instance now I've provided a

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link in this to the Amazon documentation
that will explain how to go through and

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do this so if you just go to the
resources section and just click on that

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link it'll link to the the JavaScript
SDK documentation on nodejs that will

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have that section on how to do this so
I'm just going to paste it all in there

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so first we do a call sort of curl and
that is to install nvm or the node

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version manager and that is what has
happened then the next thing we need to

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do is to activate that node version
manager which we've done there and once

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we have done that we can now install
node and the latest version currently is

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ace at the time of this video is being
done so we're going to install nodejs

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version 8 and there it is so we do node
- - version it will tell us it

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just installed version eight point two
point one which is the latest version

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out there that we can use for nodejs
now the next thing we need to install is

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Express so that we can create web page
web pages so we do NPM install Express

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and we'll do that globally now the next
thing we're going to do is we're going

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to need to install git so I'll put get
on there as well so I just do a young

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install git

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check that's working so to git - -
version and we can see we're like two

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point seven point five set up there so
that's fine so now that we've got get

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set up what we're going to do is we're
going to pull in the sample code that

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we've got on the back space Academy site
or on the back space technology github

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account and so the we do a git clone and
the addresses github.com

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/backspaceTech and then
/node - js - sample.git

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so if you type that in that will
clone that sample application and if we

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just to a dir and we can have a look at
more see than it is so there's our

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node - js - sample application that has just
been pulled in from that github

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repository so I'm just now going to CD
into that directory and we're just edit

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look inside of it so the first thing I
need to do in now is install the

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packages that are needed for the
application so we just do npm install

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and that will pull in those NPM packages
that we need that are defined in our

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package JSON file so now we can run our
applications so you can just do NPM

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start if you want or if you want to see
it in a debug output as well as just put

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in this command there otherwise you just
do npm start it'll both do the same

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thing and we can see that it's listing
on port 8080 so nodejs it'll now be

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listening on port 8080
but the Linux operating system will be

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accepting traffic on port 80 and we've
also set up our security group to accept

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traffic on port 80 as well so we should
be able to now go to the public IP

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address of this instance and we should
be able to see our sample application

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running okay so back in the ec2
management console I'm just going to

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select that instance and I'm just going
to select it to public IP address and go

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to its public IP address and there we go
we've got our sample application up and

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so we've successfully launched in
instance we've set up a security group

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that is going to accept traffic on port
80 and we've also set up our Linux

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instance with its firewall settings to
redirect traffic from port 80 to port

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8080 and also we have our no genius
instance that we's accepting that

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traffic and responding to that traffic
as well and so there we have it so what

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we'll do next is that we'll go back into
the ec2 management console and we'll

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create an ami of this ec2 instance now
back in the ec2 management console we

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just have to again select that instance
and go to actions and then we go to

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image and we can create an image of that

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we'll give it a name okay so once we
in there we just create the image down

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okay so create image request receipt so
we can click on the pending image so we

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just go on here okay so after a certain
amount of time our ami will have been

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created and all have status available so
what we can do if we go into permissions

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so currently by default when we first
create an ami it's going to be private

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and so we can actually edit that and so
we can change it to public so if we

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change it to public and we say that it
will then be available to be searched

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for on the community AMIs so I'm just
going to leave it private because I

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don't want to put another ami there and
get people confused when they're looking

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for the backspace nodejs ami but if you
wanted to create an application and you

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wanted to put that ami out for the rest
of the AWS community to use and that's

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how you would do it you just make it a
public AMI and it will be on there so

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I'm just going to cancel out of that
so what I'm going to look at doing now

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is to copy this ami over to another
region so I'm currently in North

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Virginia and let's just say I want to
copy it over to say Mumbai why not so

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what I do is I go to actions copy ami
and I select my destination region

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Mumbai there we go
and we have an option to encrypt that

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I'm not going to worry about that and so
I copy the ami over to Mumbai so cut

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again
comes up with a screen saying that this

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operation is currently in progress so we
can visit the ami in AP South one which

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is a Mumbai region so let's have a look
at that and see what's happening

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it's going through the same thing it's
going to be creating it will be pending

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and then eventually go to available okay
so after a bit longer amount of time to

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doing it in the US East region to do a
cross region copy tends to take a little

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bit longer but we have our ami that was
in the US east region is now being

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copied over to the Mumbai region so if
you want to create multiple instances in

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multiple regions that are identical then
this is how you do it you create an ami

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and then you copy that ami over to the
region that you want to launch into so

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we can again we now that that's created
we can launch an instance from here just

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as soon as we will be four so I'm not
going to go through that process now

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simply because I haven't got a key pair
set up for for connecting in but all you

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would need to do is to go through and
launch that instance again make sure

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it's got a public IP address, launch
that instance and make sure that you've

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got a security group that will have
access on port 22 and on port 80 and

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then once that's up and running you can
connect into it you can again set up

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your IP forwarding in your Linux
operating system and set up your

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firewall settings in your Linux
operating system to allow traffic on

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port 80 and then you will be able to run
that and run that application and you'll

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be able to go to the IP address of that
of that ec2 instance and you'll see the

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application running so that brings us to
the end of this lecture so you now have

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a very good understanding of not only
how the launch instances using ami but

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also to launch an instance which is a
bare-bones Linux operating system and

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then go through and install software and
create an ami of that finished ec2

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instance then copy that over to multiple
regions and launch ec2 instances that

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are the same in multiple regions if
you'd like so that brings us to the end

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and I look forward to you in the next
lecture