- Plesk 12.5 for Linux
- Plesk Onyx for Linux
Apache crashes with the following error in
[mpm_event:error] [pid 22565:tid 140163371042688] AH00485: scoreboard is full, not at MaxRequestWorkers
- Event MPM mode is used by Apache.
This is Apache bug with ID #53555 which is already fixed in Apache 2.4.25.
As a workaround the following steps can be performed:
Change MPM mode from Event to Prefork under Tools & Settings > Apache Web Server
restartin corresponding files under
# grep "reload" /etc/logrotate.d/*
Modify the configuration settings of
/etc/apache2/mods-enabled/mpm_event.conf. For example, the value of
MaxRequestWorkerscan be increased. Then restart Apache:
# service httpd restart
If none of the provided steps did no help, check the website code. First of all, it should be checked that there are no any looped functions.