Fatal error using additional PHP version

[Lars Ebert]

Using Plesk 12.0.18 and CentOS 6.6, I installed PHP 5.6 through the Plesk Updates menu. After that, the new version was not automatically selectable inside Plesk Panel. I added it using php_handler.

However, when selecting PHP 5.6 for a website, I only get a 500 server error.

Trying to troubleshoot, I ran "/opt/plesk/php/5.6/bin/php-cgi -v", which also resulted in an error:
Fatal Error Unable to allocate shared memory segment of 67108864 bytes: mmap: Cannot allocate memory (12)

The same kind of error is logged in the error_log for the website I switched to 5.6.

I have found some guides how to fix this, but in none of them, the error also occurs when calling "php-cgi -v" directly in the command line.

The same error occured when I tried the same thing with PHP 5.5.

How can this issue be fixed?

 

[IgorG]

Have you checked this KB article http://kb.odin.com/en/122412 ?

 

[Lars Ebert]

Just did. The shmpages-limit is already higher than what the article suggests, still it is used up
resource held maxheld barrier limit failcnt
shmpages 26877 26877 32768 49152 72

 

[IgorG]

There are 72 failcounters. Looks like it is lack of resource. Do you have failcounters for other resources? Have you tried restart VPS with new settings?

 

[Lars Ebert]

shmpages is the only failing resource. I have restarted the VPS multiple times, the error starts to occurr immediately after the server is started.

 

[IgorG]

If serious increasing shmpages didn't help - contact support team for more detailed investigation directly on your server.

 

[dieselpower44]

Hi Lars,

I know this is an old thread but did you ever figure out what was wrong? I'm having an identical issue on my Centos 6.8 server with Onyx. I'm assuming a corrupt php.ini or something but nothing I try seems to work. Strangely, it only affects some sites and only happens when using PHP-FPM.