sometimes, as wrote also in the past, i find the main webserver the one with apache+php websites and even some word press, completely freezed in "rebooting"..
(a daily scheduled reboot)
Since this situation has been happening also on the mail server when we have "re-activated" clamAV clamscan and fixed increasing VA limit from the default (1536) to 2560.
Could this help also for apache+php web server?
Any hint?