I am using nginx helper 1.8.1 along with fastcgi caching and I noticed that the purging does not work. The problem here is that I have one PHP-FPM pool per website using another user account each. My nginx runs as www-data and so the files created by FastCGI caching also belongs to www-data. This means that the nginx helper can not delete (unlink) the cache file because that PHP-FPM runs as another user. Do you have any work around for that or any solution?
Why not always use the /purge URL instead of unlinking files?
Here would be the PHP-FPM error message just in case:
2014/06/16 12:42:23 [error] 28902#0: *41796 FastCGI sent in stderr: "PHP message: PHP Warning: opendir(/var/run/nginx-cache/mywebsite.com/): failed to open dir: Permission denied in /var/www/mywebsite.com/htdocs/wp-content/plugins/nginx-helper/purger.php on line 686" while reading response header from upstream, client: XX.XX.XX.XX, server: www.mywebsite.com, request: "GET /wp-admin/post.php?post=482&action=edit&message=1&nginx_helper_action=purge&nginx_helper_urls=all&_wpnonce=a382bcef22 HTTP/1.1", upstream: "fastcgi://unix:/var/lib/nginx/fastcgi/mywebsite.com.sock:", host: "www.mywebsite.com", referrer: "http://www.mywebsite.com/wp-admin/post.php?post=482&action=edit&message=1"
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