Install Config Introduction

• What package managers are and how they differ across platforms
• Installing Nginx on Ubuntu, CentOS/RHEL, macOS, and Windows
• Managing the Nginx service (status, start, stop, restart, reload)
• The structure of nginx.conf and the common include patterns (sites-available / sites-enabled)
• Creating server blocks (virtual hosts) to host static content
• Allowing HTTP/HTTPS through UFW (or platform equivalents)

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Package managers — quick overview

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Installing Nginx — examples by OS

sudo apt update
sudo apt install nginx
# verify:
sudo systemctl status nginx

# CentOS 7 / RHEL 7 might need EPEL; many Fedora/RHEL systems use dnf
sudo yum install nginx      # or: sudo dnf install nginx
sudo systemctl enable --now nginx

brew update
brew install nginx
# Start as a background service:
brew services start nginx
# Or run in foreground:
nginx

choco install nginx -y
# or with winget:
winget install --id Nginx.Nginx
# If installed as a service, use the Services MMC or:
sc start nginx

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Managing the Nginx service

sudo nginx -t

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Nginx configuration layout (nginx.conf, server blocks, and includes)

user www-data;
worker_processes auto;
pid /run/nginx.pid;

events {
    worker_connections 1024;
}

http {
    sendfile on;
    include /etc/nginx/mime.types;
    default_type application/octet-stream;
    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;

    # include per-site configs (Debian/Ubuntu style)
    include /etc/nginx/sites-enabled/*;

    server {
        listen 80;
        server_name example.com www.example.com;

        root /var/www/example.com/html;
        index index.html;

        location / {
            try_files $uri $uri/ =404;
        }
    }
}

• include /etc/nginx/conf.d/*.conf; for packaged configs
• sites-available + sites-enabled where sites-enabled contains symlinks to active configs
• Use nginx -t to validate config syntax and systemctl reload nginx to apply changes without dropping connections

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Host a simple static website (server block / virtual host)

1. Create the site directory and a simple index file (example for Ubuntu/Debian):

sudo mkdir -p /var/www/example.com/html
sudo chown -R $USER:$USER /var/www/example.com/html
chmod -R 755 /var/www/example.com

cat > /var/www/example.com/html/index.html <<'HTML'
<!doctype html>
<html>
<head><meta charset="utf-8"><title>Example</title></head>
<body><h1>Welcome to example.com</h1></body>
</html>
HTML

2. Create a server block file (e.g., /etc/nginx/sites-available/example.com) and add the server block shown earlier.
3. Enable the site (Debian/Ubuntu):

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

4. Verify by visiting http://<SERVER_IP>/ or http://example.com if DNS points to your server.

• HTTP — port 80
• HTTPS — port 443 (requires TLS certificate; consider Let’s Encrypt for free certs)

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Firewall (UFW example)

sudo ufw allow 'Nginx Full'   # opens 80 and 443
sudo ufw allow 'Nginx HTTP'   # opens 80 only
sudo ufw enable
sudo ufw status

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Summary and next steps

• Use your OS package manager to install Nginx and learn the service manager commands for start/stop/reload.
• Use nginx -t to test changes and systemctl reload nginx (or the OS equivalent) to apply them safely.
• Structure sites with separate server blocks and leverage sites-available / sites-enabled on Debian-style systems.
• Open the appropriate firewall ports and obtain TLS certificates for HTTPS.

• Nginx Documentation
• Ubuntu Server Guide
• systemd — managing services
• UFW — Uncomplicated Firewall
• Homebrew
• Chocolatey | winget