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Prerequisites

Before you begin this guide, you should have a regular, non-root user with sudo privileges configured on your server. When you have an account available, log in as your non-root user to begin.

Step 1: Install Nginx

Nginx is available in Ubuntu’s default repositories, so the installation is rather straight forward.

Since this is our first interaction with the apt packaging system in this session, we will update our local package index so that we have access to the most recent package listings. Afterwards, we can install nginx

sudo apt-get update
sudo apt-get install nginx

After accepting the procedure, apt-get will install Nginx and any required dependencies to your server.

Step 2: Adjust the Firewall

Before we can test Nginx, we need to reconfigure our firewall software to allow access to the service. Nginx registers itself as a service with ufw, our firewall, upon installation. This makes it rather easy to allow Nginx access.

We can list the applications configurations that ufw knows how to work with by typing:

sudo ufw app list

You should get a listing of the application profiles:

Available applications:
  Nginx Full
  Nginx HTTP
  Nginx HTTPS
  OpenSSH

As you can see, there are three profiles available for Nginx:

  • First, Nginx Full: This allows both port 80 (normal, unencrypted web traffic) and port 443 (TLS/SSL encrypted traffic)
  • Second, Nginx HTTP: This allows only port 80 (normal, unencrypted web traffic)
  • Third, Nginx HTTPS: This allows only port 443 (TLS/SSL encrypted traffic)

It is recommended that you enable the most restrictive profile that will still allow the traffic you’ve configured. Since we haven’t configured SSL for our server yet, in this guide, we will only need to allow traffic on port 80.

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Enable this by typing:

sudo ufw allow 'Nginx HTTP'

Verify the change by typing:

sudo ufw status

HTTP traffic allowed in the displayed output:

Output
 Status: active
 To                         Action      From
 --                         ------      ----
 OpenSSH                    ALLOW       Anywhere                  
 Nginx HTTP                 ALLOW       Anywhere                  
 OpenSSH (v6)               ALLOW       Anywhere (v6)             
 Nginx HTTP (v6)            ALLOW       Anywhere (v6)

Step 3: Check your Web Server

At the end of the installation process, Ubuntu 16.04 starts Nginx. The web server should already be up and running.

We can check with the systemd init system to make sure the service is running by typing:

systemctl status nginx
Output
 ● nginx.service - A high performance web server and a reverse proxy server
    Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
    Active: active (running) since Mon 2016-04-18 16:14:00 EDT; 4min 2s ago
  Main PID: 12857 (nginx)
    CGroup: /system.slice/nginx.service
            ├─12857 nginx: master process /usr/sbin/nginx -g daemon on; master_process on
            └─12858 nginx: worker process

As you can see above, the service appears to have started successfully. However, the best way to test this is to actually request a page from Nginx.

You can access the default Nginx landing page to confirm that the software is running properly. You can access this through your server’s domain name or IP address.

If you do not want to set up a domain name for your server, you can use your server’s public IP address. If you do not know your server’s IP address, you can get it a few different ways from the command line.

Try typing this at your server’s command prompt:

ip addr show eth0 | grep inet | awk '{ print $2; }' | sed 's//.*$//'

You will get back a few lines. You can try each in your web browser to see if they work.

An alternative is typing this, which should give you your public IP address as seen from another location on the internet:

sudo apt-get install curl
curl -4 icanhazip.com

When you have your server’s IP address or domain, enter it into your browser’s address bar:

http://server_domain_or_IP

You should see the default Nginx landing page, which should look something like this:

This page is simply included with Nginx to show you that the server is running correctly.

Step 4: Manage the Nginx Process

Now that you have your web server up and running, we can go over some basic management commands.

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To start|stop|restart|reload|disable|enable your web server, you can type:

sudo systemctl stop nginx
sudo systemctl start nginx
sudo systemctl restart nginx
sudo systemctl reload nginx
sudo systemctl disable nginx
sudo systemctl enable nginx

Step 5: Get Familiar with Important Nginx Files and Directories

Now that you know how to manage the service itself, you should take a few minutes to familiarize yourself with a few important directories and files.

Content

  • /var/www/html: The actual web content, which by default only consists of the default Nginx page you saw earlier, is served out of the /var/www/html directory. This can be changed by altering Nginx configuration files.

Server Configuration

  • /etc/nginx: The Nginx configuration directory. All of the Nginx configuration files reside here.
  • /etc/nginx/nginx.conf: The main Nginx configuration file. This can be modified to make changes to the Nginx global configuration.
  • /etc/nginx/sites-available/: The directory where per-site “server blocks” can be stored. Nginx will not use the configuration files found in this directory unless they are linked to the sites-enabled directory (see below). Typically, all server block configuration is done in this directory and then enabled by linking to the other directory.
  • /etc/nginx/sites-enabled: The directory where enabled per-site “server blocks” are stored. Typically, these are created by linking to configuration files found in the sites-availabledirectory.
  • /etc/nginx/snippets: This directory contains configuration fragments that can be included elsewhere in the Nginx configuration. Potentially repeatable configuration segments are good candidates for refactoring into snippets.

Server Logs

  • /var/log/nginx/access.log: Every request to your web server is recorded in this log file unless Nginx is configured to do otherwise.
  • /var/log/nginx/error.log: Any Nginx errors will be recorded in this log.

Conclusion

Now that you have your web server installed, you have many options for the type of content to serve and the technologies you want to use to create a richer experience.

Source: InApps.net

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