How to install and setup Nginx on Debian Linux 9

To install and set up Nginx on Debian Linux 9, you will need to have root privileges or access to a user with sudo privileges.

1. First, update the package repository by running the following command:

sudo apt update

2. Install Nginx by running the following command:

sudo apt install nginx

3. Once the installation is complete, Nginx will start automatically. You can check the status of the Nginx service by running the following command:

systemctl status nginx

4. To make sure that Nginx starts automatically at boot time, run the following command:

systemctl enable nginx

5. To access the Nginx web server, open a web browser and go to the following URL:

http://localhost/

You should see the default Nginx welcome page.

6. The main configuration file for Nginx is located at /etc/nginx/nginx.conf. You can edit this file to customize the behavior of Nginx. For example, you can change the port that Nginx listens on, enable SSL/TLS encryption, or set up virtual hosts.

7. To create a virtual host, create a new configuration file in the /etc/nginx/sites-available directory. For example:

sudo vi /etc/nginx/sites-available/example.com

In the configuration file, specify the server name, document root, and any other options that you want to use. For example:

server {
    listen 80;
    server_name example.com www.example.com;
    root /var/www/example.com;
    index index.html index.htm;
}

8. To enable the virtual host, create a symbolic link from the configuration file in the /etc/nginx/sites-enabled directory. For example:

sudo ln -s /etc/nginx/sites-available/example.com /etc/nginx/sites-enabled/

9. Test the Nginx configuration by running the following command:

nginx -t

If the configuration is valid, you should see a message saying "syntax is ok" and "configuration is ok".

10. If the configuration is valid, reload Nginx to apply the changes by running the following command:

systemctl reload nginx

That's it! Nginx should now be installed and set up on your Debian Linux 9 system. You can use it to serve web content and set up virtual hosts.