NGINX Web Server (Demo)
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Video Transcription
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>> Hey Cybrarians and welcome back to
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the Linux+ course here at Cybrary,
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I'm your instructor Rob Goelz.
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In today's lesson, we're going to be
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discussing the NGINX web Server.
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Upon completion of today's lesson,
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you're going to be able to install
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the NGINX web server role on both CentOS and Ubuntu,
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as well as locate the NGINX configuration files.
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Let's get started with some demo time.
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Here we are in our CentOS environment,
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and today in order to install NGINX,
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we're going to use DNF.
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We can use DNF or YUM to install things on CentOS,
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but just for a little variety,
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we're going to use DNF today.
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We'll do a DNF install NGINX,
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and once this starts going,
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it's going to go ahead and prompt
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this if we want
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to install NGINX and all of
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the dependencies when we're running DNF.
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Of course we're going to go ahead and say yes.
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we'll give it just a moment, and there we are.
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We hit "Y", and now it's
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going to download and install the packages.
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Now, just like we saw when we
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ran the Apache install in the previous lesson,
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we can use the RPM command to query the list of
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files that were installed with NGINX.
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Let's go ahead and do that.
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We've reached the end of the install,
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let's go ahead and clear our screen.
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Now we can do an RPM dash,
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q for query, l for list on NGINX.
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We'll pipe that to less just to make sure we don't have
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a bunch of output on our screen that's unreadable.
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[NOISE] There we go.
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Lucky for us NGINX is a very small number of
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files that get installed by comparison to Apache,
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which had quite a few files, if you remember.
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Now what we can do is, we can take a look at
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the configuration file for NGINX.
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Here in CentOS, we're going to find that in
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etc, nginx, nginx.conf.
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If we look inside this file,
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we can see a bunch of
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good information right off the bat here,
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we can see that it's going to listen on 80,
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the default server port.
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It's going to use usershare nginx html as it's
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document root for all of
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the configuration for the web pages.
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Let's go ahead and quit out of this file.
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Now in order to start NGINX,
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of course we need to run systemctl,
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start [NOISE] nginx, and hit "Enter".
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Now we can just hit "Up" on
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our keyboard and change the start to say status.
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Then we can see the status of
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the NGINX service is running,
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and it is currently set to disabled.
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Another way we could do this actually is if we wanted to,
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we could do systemctl,
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instead of start, we could say enable dash,
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dash now, and then it will kill two birds with one stone.
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Not only does it go ahead and start
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the NGINX service, it also enables it.
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When we run the status command now we
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can see that it's actually enabled as well.
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Let's clear the screen and actually let's go over
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to a Firefox window here.
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[NOISE] If we try to go to 127.0.0.1 in this browser,
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it should bring us to an
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NGINX landing page, and it does.
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Welcome to nginx on Red Hat Enterprise Linux,
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and we see NGINX right down here.
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With that, let's go ahead and take a look.
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Try to do the same thing in our Ubuntu environment.
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Now with that, let's go ahead and take
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a look and try to do the same thing in
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our Ubuntu environment and do the same thing there.
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Here we are in Ubuntu,
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and what we're going to do is,
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do an app install.
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NGINX over here in this environment.
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We're going to say yes, and
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we'll just see all the lovely progress
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at the bottom of the page.
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There we are, we're back to our screen.
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Now we are going to hit "Control L",
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to give us our screen back,
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so we can get our space back,
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get right back up to the top clear the screen.
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You can say clear or hit "Control L",
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they both do the same thing.
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Here in order to see all the files that are installed in
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a Debian system like Ubuntu. Ubuntu is Debian based.
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We have to use a D package command, so dpkg,
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dash L, and we're going to
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find any files that are installed of NGINX.
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I think this is going to be small, so we'd have
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to pipe it to less will just hit "Enter".
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There we go, we've just got a handful of files again
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installed along with NGINX here in Ubuntu.
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If we wanted to take a look at the configuration file,
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we can take a look at less,
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etc, nginx, nginx.conf.
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But we'll notice that this is
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a slightly different file here,
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it doesn't really have as much information
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as what we saw in CentOS.
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The reason for that is that
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the actual location of some of
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the information that we want to see for NGINX
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is in a different place when we're talking about Ubuntu.
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If we don't do a less,
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but actually an ls on etc nginx,
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we can see a bunch of files in here.
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What we're going to do is,
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we're going to go into sites available.
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We're going to see that there's one called default.
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Let's do a less on etc, nginx,
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sites available default,
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[NOISE] and here are
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all the lovely configurations that we're looking for.
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What we'll see here is it is
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listening on port 80 as well.
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But by comparison to
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the configuration that we saw in CentOS,
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here at Ubuntu, the root is at var, www, html.
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Just a few little wrinkles between
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the NGINX configuration at CentOS and Ubuntu,
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but that's pretty much it there.
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Now at this point, let's go ahead and run a systemctl,
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do a status on NGINX.
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Here we can see again, just like with Apache,
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that when we install this using apt on Ubuntu,
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it not only installs it,
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it also goes ahead and starts
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the service and sets it to enabled.
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Just something to keep in mind, if
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you don't want that to happen,
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you're going to have to probably go in after
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the fact and disable something or stop it.
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The last thing we need to check
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here is we need to actually make sure that
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this stuff has been set up in the uncomplicated firewall.
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Remember, uncomplicated firewall or UFW.
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We'll look at the app list on UFW,
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to see what we have here,
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and we see that we have an entry for nginx http,
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as well as nginx https.
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Let's go ahead and add nginx http,
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because we haven't configured this to do https.
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We'll do a UFW allow,
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and then we'll say that we want to run nginx http.
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To save us from doing a little typing,
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I'll just paste that in.
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Didn't like that because I need to use
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a closing quotation mark there and hit "Enter".
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There we go, that rule has been added.
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Now let's take a look over here in our Firefox and
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go to 127.0.0.1, and hit "Enter".
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There we go, welcome to Nginx,
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we've reached our landing page.
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With that, we've reached the end of this lesson.
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In today's lesson we covered installing NGINX,
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the web server role in both CentOS and Ubuntu,
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and we talked about locating NGINX configuration files.
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Thanks so much for being here
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>> and I look forward to seeing you in the next lesson.
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