Why does the site take a long time to load (CentOS ngnix apache)?

Question

Apache HTTP Server

Hey!
There is a site best-realty.ru.
Drops periodically. Takes a long time to load and won't open.
ngnix apache configuration. CMS Drupal
, and when you click on shutdown through the admin panel, the site starts working, but then the server stops and, accordingly, the site does not work, you start it - the site also loads, but does not open.

Answer 1

Hello,
Unfortunately, there are no telepaths here. You just wrote, approximately, the following "something in my body hurts, what am I sick with?"
You either need to collect and show all the logs (apache, nginx, mysql, number of RAM, process list, hdd loading, etc.) at the time of errors, or find a system administrator (or contact hoster support) who can monitor the problem on server and find out what is causing the crash.

Answer 2

It is not enough to simply collect logs, you need to take some special measures to analyze performance: implement query monitoring in MySQL, disk activity monitoring, CPU load monitoring, free memory and swap monitoring. It is necessary to try to make an application profiling.
By the way, we can do all this - contact us if necessary.

Answer 3

So advertising :) Answers are not needed :)

Answer 4

actually found the reason.
fail2ban was installed
and it blocked everyone and everything)))