Nginx fastcgi “Primary script unknown” when configuring userdir

fastcginginxphp-fpm

I hate configuring nginx. It's so complicated. How do I get PHP to work in my user dirs? Here's the relevant part of my nginx.conf:

    location ~ ^/~(.+?)(/.*)?$ {
        autoindex on;
        autoindex_exact_size off;
        alias /home/$1/public_html$2;

        location ~ \.php {
            include /etc/nginx/fastcgi.conf;
            fastcgi_intercept_errors on;
            fastcgi_pass  127.0.0.1:9000;
            fastcgi_index index.php;
        }
    }

This gives me the error: FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream in the nginx error log.

Here's my /etc/nginx/fastcgi.conf:

fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
fastcgi_param  QUERY_STRING       $query_string;
fastcgi_param  REQUEST_METHOD     $request_method;
fastcgi_param  CONTENT_TYPE       $content_type;
fastcgi_param  CONTENT_LENGTH     $content_length;

fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
fastcgi_param  REQUEST_URI        $request_uri;
fastcgi_param  DOCUMENT_URI       $document_uri;
fastcgi_param  DOCUMENT_ROOT      $document_root;
fastcgi_param  SERVER_PROTOCOL    $server_protocol;
fastcgi_param  HTTPS              $https if_not_empty;

fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
fastcgi_param  SERVER_SOFTWARE    nginx/$nginx_version;

fastcgi_param  REMOTE_ADDR        $remote_addr;
fastcgi_param  REMOTE_PORT        $remote_port;
fastcgi_param  SERVER_ADDR        $server_addr;
fastcgi_param  SERVER_PORT        $server_port;
fastcgi_param  SERVER_NAME        $server_name;

# PHP only, required if PHP was built with --enable-force-cgi-redirect
fastcgi_param  REDIRECT_STATUS    200;

I'm assuming nginx isn't resolving the script name correctly. I hate having to tell nginx where to look in my filesystem, writing custom regexes for what should be built-in (or at least standardized and documented) functionality.

Best Answer

Problem is that in your fastcgi.conf you define SCRIPT_FILENAME as $document_root$fastcgi_script_name; but you then use the alias direcive to set the path.

You should update your SCRIPT_FILENAME to use $request_filename

You can also go back to nested location if you prefer. If you still get this error afterwards then I have documented all the possibilities here: http://blog.martinfjordvald.com/2011/01/no-input-file-specified-with-php-and-nginx/

Please check that as there can be multiple other causes.

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