Resolved Zend OPcache can't be temporary enabled

[Sysop]

I'm having an issues with Zend OPcache whenever I try to enable it through the PHP settings for one of my subscriptions (PHP 7.0.19 running as FPM Application served by Apache).

The log gets flooded every couple of seconds with:

Zend OPcache can't be temporary enabled (it may be only disabled till the end of request) at Unknown#0

After attempting to enable OPcache by adding the following in "Additional Directives":

opcache.enable=1
opcache.enable_cli=1
opcache.interned_strings_buffer=8
opcache.max_accelerated_files=10000
opcache.memory_consumption=128
opcache.save_comments=1
opcache.revalidate_freq=1
opcache.fast_shutdown=1
opcache.validate_timestamps=on

When I tried to return the the main Plesk control panel I got this error:

Internal error:
Permission denied.#0 /usr/local/psa/admin/externals/Zend/Controller/Plugin/Broker.php(309): Plesk\Application\Controller\Plugin\ForgeryProtection->preDispatch(Object(Zend_Controller_Request_Http)) #1 /usr/local/psa/admin/externals/Zend/Controller/Front.php(941): Zend_Controller_Plugin_Broker->preDispatch(Object(Zend_Controller_Request_Http)) #2 /usr/local/psa/admin/plib/Application/Web.php(39): Zend_Controller_Front->dispatch(NULL) #3 /usr/local/psa/admin/htdocs/application.php(15): Plesk\Application_Web->run() #4 {main}
Message    Permission denied.#0 /usr/local/psa/admin/externals/Zend/Controller/Plugin/Broker.php(309): Plesk\Application\Controller\Plugin\ForgeryProtection->preDispatch(Object(Zend_Controller_Request_Http)) #1 /usr/local/psa/admin/externals/Zend/Controller/Front.php(941): Zend_Controller_Plugin_Broker->preDispatch(Object(Zend_Controller_Request_Http)) #2 /usr/local/psa/admin/plib/Application/Web.php(39): Zend_Controller_Front->dispatch(NULL) #3 /usr/local/psa/admin/htdocs/application.php(15): Plesk\Application_Web->run() #4 {main}
File    Broker.php
Line    312
Type    Zend_Controller_Exception

I'm not sure what is going on exactly with Zend and OPcache, but something isn't working obviously...

 

[IgorG]

I think this problem is addressed in the following KB - A lot of errors in php-fpm log: ERROR: Unable to set php_value 'opcache.enable' . Does this solve your issue?

 

[Sysop]

Hi Igor,

I checked that opcache is only enabled under "Performance Settings" and removed the "Additional Directive" opcache.enable=1 as recommended in the article; the others I left enabled. It seems to have resolved the issue as far as I can tell — Thanks very much!