Issue Server keeps crashing. Is it memory or something else I am missing?

[johnamber]

Server operating system version

CentOS Linux 7.9.2009 (Core)

Plesk version and microupdate number

Plesk Obsidian v18.0.74_build1800251204.13 os_CentOS 7

Hello,

Our server went down twice this month, and I am having trouble figuring out the cause. What I did find was that the memory caching keeps building up over time slowly. I was under the impression that it dumps cache as new processes are needed, but not sure if that is the case and is what is causing the system crashes. When the system went down on 12/04 the memory cache wasn't at peak though. That is if both crashes are related at all, and if memory is even the issue? Maybe it is Mysql?

When I reboot the system the Plesk logs start at the time of reboot. Any help would be greatly appreciated on where to look now.

Thanks in advance,
Johnny

 

[johnamber]

I forgot to add this to thread...

 

[WebHostingAce]

Please explain what you meant by 'server went down' or 'system crashes'

 

[johnamber]

Please explain what you meant by 'server went down' or 'system crashes'

Hello WHA,
Surely... When whichever event cause the server to crash then I cannot access anything on the server, not even SSH. I then have to reboot the server and everything runs smoothly for a bit. This has happened numerous times... btw I do have fail2ban and other security measures enabled as such with plesk.

I wasn't sure if this type of memory use is normal but seemed off.

Thanks! Johnny