Some malicious persons are flooding our server ( Server
Version: Apache/2.4.27 (cPanel) OpenSSL/1.0.2k mod_bwlimited/1.4
Server MPM: worker Server Built: Aug 17 2017 00:51:40 ) with bogus
traffic. It's been going down every few hours, often posting AH00288
errors first.
What does this error mean? Any suggestions for preventing
this?
there is a (hopefully) good explanation in https://httpd.apache.org/docs/2.4/mod/event.html#how-it-works "Graceful process termination and Scoreboard usage", in which it is explained what it means and how mpm-event tried to solve the problem. I would try to switch to mpm-event if possible to see if things improve.