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Nginx Configuration

Installation on Nginx is entirely possible, and in our experience quite a lot faster than apache. This section won't dive into how Nginx is installed etc, but will show a working Nginx configuration.

Note: At time of writing this config snippet doesn't care about WebDAV at all.

Configuration

Below is the configuration for a Nginx server (just the server part, the http etc. part can be kept default, as long as mime.types are included).

Assumptions - change them to match your environment/distro:

  • Pimcore 5 was installed into: /var/www/pimcore; therefore, the Document-Root is: /var/www/pimcore/web
  • Logfiles are written to the default location /var/log/nginx. If you prefer to have the logs together with the Pimcore Logs: these are in /var/www/pimcore/var/logs.
  • PHP-FPM is configured to listen on the Socket /var/run/php/pimcore5.sock. If your setup differs, change the server directive within the upstream block accordingly.
  • Before you change the order of location blocks, read Understanding Nginx Server and Location Block Selection Algorithms
  • Assets are set to expire after 14 days; adjust all expires directives to suit your needs.
# mime types are covered in nginx.conf by:
# http {
#   include       mime.types;
# }

upstream php-pimcore5 {
    server unix:/var/run/php/pimcore5.sock;
}

server {
    listen 80;
    server_name pimcore.loc;
    root /var/www/pimcore/web;
    index index.php;

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

    # Pimcore Head-Link Cache-Busting
    rewrite ^/cache-buster-(?:\d+)/(.*) /$1 last;

    # Stay secure
    #
    # a) don't allow PHP in folders allowing file uploads
    location ~* /var/assets/.*\.php(/|$) {
        return 404;
    }
    # b) Prevent clients from accessing hidden files (starting with a dot)
    # Access to `/.well-known/` is allowed.
    # https://www.mnot.net/blog/2010/04/07/well-known
    # https://tools.ietf.org/html/rfc5785
    location ~* /\.(?!well-known/) {
        deny all;
        log_not_found off;
        access_log off;
    }
    # c) Prevent clients from accessing to backup/config/source files
    location ~* (?:\.(?:bak|conf(ig)?|dist|fla|in[ci]|log|psd|sh|sql|sw[op])|~)$ {
        deny all;
    }

    # Some Admin Modules need this:
    # Database Admin, Server Info
    location ~* ^/admin/(adminer|external) {
        rewrite .* /app.php$is_args$args last;
    }
    
    # Thumbnails
    location ~* .*/(image|video)-thumb__\d+__.* {
        try_files /var/tmp/$1-thumbnails$uri /app.php;
        expires 2w;
        access_log off;
        add_header Cache-Control "public";
    }

    # Assets
    # Still use a whitelist approach to prevent each and every missing asset to go through the PHP Engine.
    location ~* ^(?!/admin/asset/webdav/)(.+?)\.((?:css|js)(?:\.map)?|jpe?g|gif|png|svgz?|eps|exe|gz|zip|mp\d|ogg|ogv|webm|pdf|docx?|xlsx?|pptx?)$ {
        try_files /var/assets$uri $uri =404;
        expires 2w;
        access_log off;
        log_not_found off;
        add_header Cache-Control "public";
    }

    location / {
        error_page 404 /meta/404;
        add_header "X-UA-Compatible" "IE=edge";
        try_files $uri /app.php$is_args$args;
    }

    # Use this location when the installer has to be run
    # location ~ /(app|install)\.php(/|$) {
    #
    # Use this after initial install is done:
    location ~ ^/app\.php(/|$) {
        send_timeout 1800;
        fastcgi_read_timeout 1800;
        # regex to split $uri to $fastcgi_script_name and $fastcgi_path
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        # Check that the PHP script exists before passing it
        try_files $fastcgi_script_name =404;
        include fastcgi.conf;
        # Bypass the fact that try_files resets $fastcgi_path_info
        # see: http://trac.nginx.org/nginx/ticket/321
        set $path_info $fastcgi_path_info;
        fastcgi_param PATH_INFO $path_info;

        # Activate these, if using Symlinks and opcache
        # fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
        # fastcgi_param DOCUMENT_ROOT $realpath_root;

        fastcgi_pass php-pimcore5;
        # Prevents URIs that include the front controller. This will 404:
        # http://domain.tld/app.php/some-path
        # Remove the internal directive to allow URIs like this
        internal;
    }

    # PHP-FPM Status and Ping
    location /fpm- {
        access_log off;
        include fastcgi_params;
        location /fpm-status {
            allow 127.0.0.1;
            # add additional IP's or Ranges
            deny all;
            fastcgi_pass php-pimcore5;
        }
        location /fpm-ping {
            fastcgi_pass php-pimcore5;
        }
    }
    # nginx Status
    # see: https://nginx.org/en/docs/http/ngx_http_stub_status_module.html
    location /nginx-status {
        allow 127.0.0.1;
        deny all;
        access_log off;
        stub_status;
    }
}

Thumbnail generation overload protection

In case your Web-Application has a page with loads of images that are processed by a image pipeline, there's a chance this can overload your server due to too many PHP processes running in parallel that try to generate thumbnails - especially if your Users upload quite large images (e.g. 16:9 format, 5000+ pixels wide).

In that case you may extend the nginx configuration above to utilize nginx rate-limiting. You should get familiar with rate limiting anyway to protect your Site from Denial-of-Service attacks.

Step 1: Create a Zone

Somewhere in the http Section of your nginx config add this:

# Zone to Limit Pimcore On-demand Image generation
limit_req_zone $server_name zone=imggen:1M rate=5r/s;

This defines a new zone called imggen which uses the $server_name as key and allows 5 Requests per Second. You should adjust that number to match your servers capability.

Step 2: Replace the location that handles on-demand thumbnail generation

    # Pimcore On-Demand Thumbnail generation
    # with Rate-Limit.
    location ~* .*/(image|video)-thumb__\d+__.* {
        try_files /var/tmp/$1-thumbnails$uri @imggen;
        expires 2w;
        access_log off;
        add_header Cache-Control "public";
    }
    location @imggen {
        limit_req zone=imggen burst=15;
        try_files /var/tmp/$1-thumbnails$uri /app.php;
        expires 2w;
        access_log off;
        add_header Cache-Control "public";
    }

It comes with the expense of a additional stat call - which should be cached anyways, therefore the overhead should be negligible.

This config allows to queue 15 requests in a bucket before rejecting additional ones with a HTTP 429 Error. Such a bucket is maintained per virtual host and drained using 5 requests per second (as defined in Step 1).