Blank screen only

I have followed all instructions from http://rtcamp.com/tutorials/wordpress-nginx-fastcgi-cache-purge-conditional/, but all I get is a blank screen. Folders get created within the fastcgi cache path, but no content is displayed and I cannot access the backend either.

Any idea??

Here's my previous working virtual host file:

  
server {  
    listen             XXXXX;  
        server_name        website.com www.website.com;  
        root               /root/to/website;  
        index              index.php;  
   
        location / {  
            try_files $uri $uri/ /index.php?q=$uri&$args;  
        }  
        # Deny access to hidden files  
        location ~* /\.ht {  
            deny            all;  
            access_log      off;  
            log_not_found   off;  
        }  
   
        # Pass PHP scripts on to PHP-FPM  
        location ~* \.php$ {  
            try_files       $uri /index.php;  
            fastcgi_index   index.php;  
            fastcgi_pass    unix:/path/to/php-fpm.sock;  
            include         fastcgi_params;  
            fastcgi_param   SCRIPT_FILENAME    $document_root$fastcgi_script_name;  
            fastcgi_param   SCRIPT_NAME        $fastcgi_script_name;  
        }   
}  

@resende
Can u give me a URL to check?

fastcgi_cache shouldn’t create white screen. If it fails, caching will be skipped.

Also, please check nginx error.log for some hints.

Rahul,

I can give you the URL privately as it’s a development domain, but can assure that only a blank screen is displayed when I use your virtual host file.

I have compiled a different file based on http://www.untwistedvortex.com/setting-up-nginx-fastcgi-cache-wordpress/ and this seems to work, but I’m not sure if it’s totally correct and complete as yours. Here’s what I did:

open_file_cache max=1000 inactive=20s;  
open_file_cache_valid    30s;  
open_file_cache_min_uses 2;  
open_file_cache_errors   on;  
fastcgi_cache_path /path/to/fcgicache levels=1:2 keys_zone=WORDPRESS:10m inactive=60m;  

server {  
    listen             XXXXX;  
        server_name        website.com http://www.website.com;  
        root               /root/to/website;  
        index              index.php;  
   
        location / {  
            try_files $uri $uri/ /index.php?q=$uri&$args;  
        }  
          
        # Deny access to hidden files  
        location ~* /\.ht {  
            deny            all;  
            access_log      off;  
            log_not_found   off;  
        }  

        location ~ /purge(/.*) {  
                fastcgi_cache_purge WORDPRESS $scheme$host$1$request_method;  
                allow 127.0.0.1;  
                deny all;  
        }  
   
        # Pass PHP scripts on to PHP-FPM  
        location ~* \.php$ {  
            try_files       $uri /index.php;  
            fastcgi_index   index.php;  
            fastcgi_pass    unix:/path/to/php-fpm.sock;  
            include         fastcgi_params;  
            fastcgi_param   SCRIPT_FILENAME    $document_root$fastcgi_script_name;  
            fastcgi_param   SCRIPT_NAME        $fastcgi_script_name;  
            set $nocache "";  
            if ($http_cookie ~ (comment_author_.*|wordpress_logged_in.*|wp-postpass_.*)) {  
                    set $nocache "Y";  
            }  
            if ( $request_method ~ ^(HEAD|POST)$ ) {  
                    set $nocache "Y";  
            }  
            fastcgi_no_cache $nocache;  
            fastcgi_cache_bypass $nocache;  
            fastcgi_cache_use_stale error timeout invalid_header http_500;  
            fastcgi_cache_key $scheme$host$request_uri$request_method;  
            fastcgi_cache    WORDPRESS;  
            fastcgi_cache_valid      200 1h;  
            fastcgi_cache_valid      301 1h;  
            fastcgi_cache_valid      302 1h;  
            fastcgi_cache_valid      any 1m;  
        }  
   
}

Maybe a URL rewrite issue with your vhost file? I would like to use your code instead, but need your help to figure out why it’s not working for me.

Let me know. Thanks!

This is really strange as above config is close enough to my config. In fact there is nothing to cause white-screen!

If you want, you can copy some lines from my config to improve your current config:

 #to avoid feed, sitemap from getting cached on a busy site  
 if ($request_uri ~* "(/wp-admin/|/xmlrpc.php|/wp-(app|cron|login|register|mail).php|wp-.*.php|/feed/|index.php|wp-comments-popup.php|wp-links-opml.php|wp-locations.php|sitemap(_index)?.xml|[a-z0-9_-]+-sitemap([0-9]+)?.xml)") {  
                set $no_cache 1;  
        }  

and

  #make use of browser-caching. Highly recommended.  
location ~* ^.+\.(ogg|ogv|svg|svgz|eot|otf|woff|mp4|ttf|rss|atom|jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf)$ {  
                access_log off; log_not_found off; expires max;  
        }

Rest, you can use continue with your current config without any issues. :slight_smile:

Just make sure you use a plugin like Nginx-Helper for fastcgi_cache purging. :slight_smile:

Rest, you can send me name of your site privately at rahul@rtcamp.com but that alone will not help. An issue like white-screen will have more details logged in nginx’x error logs.

I am having similar issues.