Strange Behavior after update from Zabbix-Agent to Zabbix-Agent2

[Toormser]

Howdy Community,

Today after updating zabbix-agent to zabbix-agent2 on my servers I've got the following error message:

2023/02/21 08:11:44.550499 [101] cannot connect to [xxx.xxx.xxx.xxx:10051]: read tcp xxx.xxx.xxx.xxx:33309->xxx.xxx.xxx.xxx:10051: i/o timeout
2023/02/21 08:11:44.550570 [101] active check configuration update from host [XXX] started to fail

I have no firewall or something else in this lan segment and here is my configuration file from /etc/zabbix/zabbix_agent2.d/zabbix-extend.conf

TLSConnect=psk
TLSAccept=psk
TLSPSKFile=/etc/zabbix/authentication.psk
TLSPSKIdentity=psk-autoregister-id
Server=xxx.xxx.xxx.xxx
ServerActive=xxx.xxx.xxx.xxx
Hostname=XXX
HostMetadata=AgentRegister

With zabbix-agent all works fine, with zabbix-agent2 I've got the error messages from the top.

Anyone can help here?

Cheers
Toorms

[Toormser]

nvm ... it was the Zabbix Server, which was crashed completely.

shutdown -r now and increase Memory solved my problem.