Nginx – PHP-CGI Started Serving Blank Pages

fastcginginxPHPWordpress

My PHP-CGI started serving blank pages for no apparent reason until I restarted the process.

I want to know why.

Unfortunately the "production" configuration file of PHP has no error_log by default. My Nginx error log also displayed no errors relating to PHP. This is probably a hopeless case, but I am asking just in case.

Here is my setup

Nginx 0.8.2
PHP 5.2.6-3ubuntu4.1 with Suhosin-Patch 0.9.6.2 (cli) (built: Apr 23 2009 14:37:14)
PHP APC 3.0.19-2
spawn-fcgi v1.6.2 (ipv6) – fastcgi wrapper from lighttpd

Any ideas what might have caused the error?

Update

I think I've isolated the problem. I've been using Monit to automatically restart PHP whenever it started blanking. My PHP error logs are blank.

But I figured out that if I disabled a WordPress plugin called WP-SuperCache, my PHP stopped being reset every ~10 hours. So far my PHP has been running for 3 days straight. Does anyone have any suggestions about this?

Best Answer

Supercache generates full cached versions of pages, as well as doing some other internal caching, it's possible there's some sort of timing issue in high-load situations. I'd check your cache folder to make sure it doesn't contain blank files. If it does, you probably have a file locking issue. Solving such an issue may be tricky, and will probably require you to open a bug ticket, as it's likely a problem with the code itself.

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Nginx – PHP-CGI Not working on CentOS 5

lighttpd and lighttpd-fastcgi both don't provide the binary that is supposed to be started with the script he provides. (/usr/bin/spawn-fcgi).

You'd better ask the guy who wrote the tutorial where he get /usr/bin/spawn-fcgi because on my server there is no way to install it with yum. He says "Install spawn-fcgi package using yum command" but it doesn't work.

Make sure you use the same repositories than him, with the same version of centos.

Nginx returning blank HTML pages with php-fpm

My php section looks like this:

        location ~ \.php$ {
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My listen directive in php-fpm.conf this:

listen = /dev/shm/php-fastcgi.socket

Could you also provide your php-fpm.conf? If the error still exists, please enable logging in fpm and provide fpm logs:

php_admin_value[error_log] = /var/log/fpm-php.www.log
php_admin_flag[log_errors] = on

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