Zabbix server logs - login/logout logs, configuration logs, can't find it

[matib55]

Hi,
I tried to find some Zabbix login/logout logs, or information in the logs that someone changed the configuration (I need to send this type of logs to the syslog server).
When I look in /var/log/zabbix I only find zabbix_server.log, zabbix_agentd.log and I can't find any information about...

[Openwheel]

Hello CentOS7 Zabbix 4.0 - systemctl controlled
I am running as a different user than zabbix (i.e. randy)
Everything is fine until the agentd and server .log files go restarted and it set ownership to zabbix:zabbix

I do not see where I can set that the ownership can be...

[thomgonz]

Zabbix gurus,

We are receiving a SIGSEG reason1 fault from one our trapper PIDs. If we look for the previous instance of that PID it's a trapper got [,req><host>xxxxxx==</host><key>xxxxxxxx</key><data>a data string over a million characters=</data></req>]...

[marcqueralt]

I'm experimenting some problems on a Zabbix installation.
The server has the log configured and running ok.
I have a lot of messages like:

13590:20100618:135430 Expression [{17456}=1 & {17455}=1] cannot be evaluated [Format error or unsupported operator.  Exp: ["000010001100000000000000"]]

...