The right nginx settings for WordPress

Why are optimized NGINX settings important?

NGINX is a powerful web server that is particularly suitable for high-traffic websites such as WordPress. With correctly configured settings, you can reduce loading time, increase security and use server resources more efficiently.

1. Basic NGINX configuration for WordPress

Here is a basic nginx.conf, which serves as a starting point for a WordPress installation:

server {
    listen 80;
    server_name your-domain.de www.deine-domain.de;

    root /path/to/wordpress;
    index index.php index.html index.htm;

    # Enable GZIP compression
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

    # standard security header
    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-Content-Type-Options "nosniff";
    add_header X-XSS-Protection "1; mode=block";

    # WordPress-specific rules
    location / {
        try_files $uri $uri/ /index.php?$args;
    }

    location ~ \.php$ {
        include fastcgi_params;
        fastcgi_pass 127.0.0.1:9000; # PHP-FPM Server
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }

    # Block access to sensitive files
    location ~* /(\.htaccess|\.htpasswd|\.env|\.user.ini|\.git|\.svn|\.ssh|\.DS_Store) {
        deny all;
    }

    # cache for static content
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|otf|eot|ttf|otf|mp4|webm|ogg|ogv|json)$ {
        expires max;
        log_not_found off;
    }

    # Caching of images and static content
    location ~* \.(?:manifest|appcache|html?|xml|json)$ {
        expires 1h;
    }
}

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2. Additional optimizations for WordPress

2.1 Permalink support

WordPress uses permalinks that are try_files be handled correctly. The line

try_files $uri $uri/ /index.php?$args;

ensures that WordPress URLs like /blog/title-of-the-post resolves correctly.

2.2 Support for WordPress cron jobs

Disable the internal WP cronjob (wp-cron.php) in the wp-config.php:

define('DISABLE_WP_CRON', true);

Create a cronjob on the server that runs the cron every 15 minutes:

*/15 * * * * curl -s https://deine-domain.de/wp-cron.php > /dev/null

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3. Caching and Performance

3.1 FastCGI Cache

FastCGI Cache stores dynamic content such as WordPress pages in memory:

fastcgi_cache_path /var/cache/nginx/fastcgi_temp levels=1:2 keys_zone=WORDPRESS:100m inactive=60m;
fastcgi_cache_key "$scheme$request_method$host$request_uri";

server {
    ...
    location ~ \.php$ {
        fastcgi_cache WORDPRESS;
        fastcgi_cache_valid 200 301 302 10m;
        fastcgi_cache_min_uses 1;
        add_header X-FastCGI cache $upstream_cache_status;
        include fastcgi_params;
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }
}

3.2 Object caching with Redis

Use Redis to speed up database queries:

• Install and activate the plugin Redis Object Cache.
• Add the following lines to wp-config.php added:

define('WP_REDIS_HOST', '127.0.0.1');
define('WP_REDIS_PORT', 6379);

• Make sure Redis is running and in the nginx.conf no conflicts arise.

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4. Security measures

4.1 Protection against brute force attacks

Block too many login attempts:

location = /wp-login.php {
    limit_req zone=one burst=5 nodelay;
    include fastcgi_params;
    fastcgi_pass 127.0.0.1:9000;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
}

4.2 Enable SSL

Enable HTTPS with an SSL certificate (e.g. from Let's Encrypt):

server {
    listen 443 ssl;
    server_name your-domain.de www.deine-domain.de;

    ssl_certificate /etc/letsencrypt/live/deine-domain.de/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/deine-domain.de/privkey.pem;

    include ssl-params.conf;
    ...
}

4.3 Additional security headers

add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always;
add_header Content-Security-Policy "default-src 'self';";

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5. Debugging and monitoring

5.1 Error logging

Enable detailed logs for error analysis:

error_log /var/log/nginx/error.log;
access_log /var/log/nginx/access.log;

5.2 Monitoring with tools

Use tools like htop, ngxtop or New Relicto monitor server performance.

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6. Example of NGINX with WordPress on Plesk

If you are using Plesk, add Domains > NGINX Settings the following directives:

# Additional Directives
gzip on;
gzip_prxied any;
gzip_types text/css application/javascript;

# WordPress Fix
location / {
    try_files $uri $uri/ /index.php?$args;
}

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With these settings you can create a fast, secure and reliable WordPress environment with NGINX.

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Summary: What to look for in NGINX settings for WordPress?

1. Ensure basic functionality:
   • Make sure that try_files is correctly configured for WordPress permalinks to work.
   • PHP requests should be fastcgi_pass forwarded to PHP-FPM.
2. Caching for better performance:
   • Implement FastCGI cache for dynamic content.
   • Use Redis or another object caching tool to speed up database queries.
3. Set up security measures:
   • Block unauthorized access to sensitive files such as .htaccess, .env or .git.
   • Protect the login area (/wp-login.php) with rate limiting and a firewall.
   • Enable HTTPS with an SSL certificate and add security headers (e.g. HSTS, Content Security Policy).
4. Optimization for static content:
   • Cache static files (images, JS, CSS) with long expiresheaders.
   • Enable GZIP compression to reduce transfer size.
5. Server monitoring and debugging:
   • Enable error and access logs to identify problems.
   • Monitor server load and analyze possible bottlenecks.
6. Collaboration with WordPress-specific tools:
   • Disable the internal WordPress cronjob and set up a server-side cronjob.
   • Use optimized plugins that work with your NGINX configuration, such as WP Rocket or LiteSpeed Cache.

Key priorities:

1. performance: Fast loading times through caching and efficient forwarding of requests.
2. Security: Protection against attacks and data theft through security headers and rate limiting.
3. stability: A clean configuration without conflicts or errors to avoid failures.

With these points you can ensure that your WordPress installation under NGINX runs quickly, securely and reliably.