- Plesk 12.5 for Linux
- Plesk Onyx for Linux
- Websites with PHP 5.6 served by PHP-FPM are not available.
/var/log/plesk-php56-fpm/error.log,there are a lot of errors like the following:
[04-Nov-2016 22:19:58] ERROR: unable to read what child say: Bad file descriptor (9)
[04-Nov-2016 22:27:19] ERROR: unable to read what child say: Bad file descriptor (9)
There is a big number of domains using PHP 5.6 served by PHP-FPM (more than 1000)
php-fpmconsumes 100% of CPU usage.
Child processes of
master process constantly reaches its limits due a big number of websites assigned to this PHP handler.
Increase max children limit for
service in accordance with
article. Note that it will affect a server performance if
is too big.
Alternatively, a part of websites can be switched to other PHP handlers.