nginx

Vanilla includes excellent support for nginx. In fact, it’s our server of choice for our cloud service.

When configuring nginx, it’s an excellent idea to save a backup copy of every file you intend to edit before you do it, so you can keep track of all changes you’ve made in case you need to revert some of them.

Configuration Notes

The most important consideration to getting Vanilla running on nginx is to make sure the rewrite rules are correct. Below is one suggested configuration which locks down the server to only respond to requests via index.php, which we strongly recommend if Vanilla is the only application running.

Make sure that you set the fastcgi_param named X_REWRITE to 1.

Make sure that fastcgi_pass is set to the name of your actual upstream (in our example below, it’s named php-fpm), or call your PHP install directly by socket, for example: unix:/run/php/php7.2-fpm.sock.

Make sure that you define PATH_INFO in your fastcgi_param file. You may find this example set of FastCGI params helpful.

When configuring FastCGI, using $realpath_root instead of $document_root may be necessary in some setups (e.g. when using symlinks).

We define SCRIPT_NAME and SCRIPT_FILENAME explicitly because some configurations may redundantly re-add them during the rewrite, resulting in a name of “/index.php/index.php”. The end result of this is all your Javascript and CSS assets paths in the page start with “/index.php”, thus breaking them. Feel free to omit those two lines if you’re confident your configuration is immune.

Sample Configurations

This would go within the appropriate server { } block. It assumes you’ve already assigned a root and index, among other things.

    # Block some folders as an extra hardening measure.
    location ~* /\.git { deny all; return 403; }
    location /build/ { deny all; return 403; }
    location /cache/ { deny all; return 403; }
    location /cgi-bin/ { deny all; return 403; }
    location /uploads/import/ { deny all; return 403; }
    location /conf/ { deny all; return 403; }
    location /tests/ { deny all; return 403; }
    location /vendor/ { deny all; return 403; }

    # This handles all the main requests thru index.php.
    location ~* ^/index\.php(/|$) {
        # send to fastcgi
        include fastcgi.conf;
        fastcgi_param SCRIPT_NAME /index.php;
        fastcgi_param SCRIPT_FILENAME $realpath_root/index.php;
        fastcgi_param X_REWRITE 1;
        fastcgi_pass php-fpm; # where 'php-fpm' is the upstream, probably defined in nginx.conf 
    }

    # If this is some other PHP script, disallow it by redirecting to /index.php
    location ~* \.php(/|$) {
        rewrite ^ /index.php$uri last;
    }

    # Default path handling
    location / {
        try_files $uri @vanilla;
    }
    
    location @vanilla {
        rewrite ^ /index.php$uri last;
    }

Another example is available in our Docker configuration.

Troubleshooting

As recommended in the nginx docs, a good first step is to replace your index.php file temporarily with this code to reveal what nginx is passing along to PHP:

<?php var_export($_SERVER)?>

You should see PATH_INFO available with a value of a relative path, for example: /discussion/1/some-title-of-a-discussion if you had clicked on a discussion or /entry/signin?Target=discussions if you clicked on “Sign In”. Your SCRIPT_NAME should be /index.php. Failing to set X_REWRITE may create a redirect loop or errors in Vanilla.

If you get a 500 error, you’ve probably made a critical error in your nginx configuration and may need to start over if you aren’t sure what changes you’ve made.

Cloud Hosting

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