• The APS Catalog has been deprecated and removed from all Plesk Obsidian versions.
    Applications already installed from the APS Catalog will continue working. However, Plesk will no longer provide support for APS applications.
  • Please be aware: with the Plesk Obsidian 18.0.78 release, the support for the ngx_pagespeed.so module will be deprecated and removed from the sw-nginx package.

plesk 9, knowledge base

When domain count reaches ~300 then many of services can stop working. e.g. apache. The reason for that is a huge amount of open file descriptors in apache. So Plesk starts to use pipeloging for apache logs. The idea is that all log records are piped to one binary program, which will open corresponding domain log file. Unfortunaly, such mechanism can be applied for access_log only, not for error_log.
I think that pipelog enabling will help you. Or just separate domains to different servers.
 
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