When I try to connect to my monitoring system with desktop widget Nagstamon, Nagstamon was not able to connect due to SSL certificate validation problem. I’m using certificate from CAcert.org.
After a while of hacking I have found this workaround in source code. This is the wrong way: Pokračovať v čítaní
My zabbix database grows to very big size. So I wrote some SQL queries, which helps me figure out, which items requires mandatory space of my disks.