Steps to reproduce:

My zabbix server was working fine until a few days ago

I was around 2.5Kvps, and since the day before yesterday almost no values come up in zabbix 

 I don't really understand the behaviour of my server. I don't see how this can be due to the fact that we haven't modified anything in the meantime. 

I don't know if it's normal for MySQL to take up so much RAM either, I wanted to modify the DB config file but I can't find a concrete example of how to modify my config file on the internet so I don't know what to use as a parameter 

I also have these messages that come up as a problem 

I don't understand it either because I just rebooted the zabbix server and the "Utilization of http poller processes over 75%" problem disappeared 

I have searched on the internet and it is advised to lower the storage period setting of the history, So I set it at 30 Days and left the other basic parameters 

I would just like to have a stable server that doesn't crash, for information my zabbix server is in version 6.2.6 (I could not select in the list of available versions because it does not seem to exist)