The ability to configure Zabbix Server to log to files per collector/processor type;
- poller process(es) > zabbix_server_poller.log
- discoverer process(es) > zabbix_server_discoverer.log
One of the biggest issues I have with Zabbix Server is I don't know what it's doing internally, or when. I don't want to increase the debug level for any given process, I just want to have individual logging capability. I don't think the Zabbix Server log is really used for any kind of event correlation for diagnosing Zabbix issues in the normal log level (3).
Having this logging capability would help address lack of visibility of internal processes and schedules such as alerter, discoverer, LLD e.t.c.