server crashing for a few days without making changes to the configuration

The server is giving me some problems and I should not have to give them, because it is not above its capacity far from it. I have 10 domains for a powerful server like this.

I copy below the errors that are appearing from time to time.

I need fine tuning to reduce server load and optimize resources considering that some of the hosted domains have a lot of visits.

The server is an Intel (R) Xeon (R) W-2145 CPU @ 3.70GHz (16 core (s))

- Plesk Obsidian v18.0.32_build1800201221.13 os_CentOS 8

-128 RAM

These are the errors that are appearing:

--------------------

Server Error

500 Plesk\Exception\Database

DB query failed: SQLSTATE[HY000]: General error: 23 Out of resources when opening file '/var/tmp/#[login to view URL]' (Errcode: 24 "Too many open files"), query was: DESCRIBE `sessions`

Type

Plesk\Exception\Database

Message

DB query failed: SQLSTATE[HY000]: General error: 23 Out of resources when opening file '/var/tmp/#[login to view URL]' (Errcode: 24 "Too many open files"), query was: DESCRIBE `sessions`

File

[login to view URL]

Line

64

---------------

Internal error

TypeError: Cannot read property 'querySelector' of null

undefined

---------------

Out of resources when opening file '/var/tmp/#[login to view URL]' (Errcode: 24 "Too many open files")

Shell Script MySQL PHP

Project ID: #28964089

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