Nagios Support Forum

Hi everyone, I've been running Nagios XI for about 6 months and noticed performance degradation as host count increased. Wanted to share what helped optimize check execution time. Issue: Started with 150 hosts, but after adding 300+, check cycles were taking longer. CPU wasn't maxed, but checks were...

Thanks for the detailed explanation, Emmett. This makes sense now. I was running into the same issue after updating to 2026R1.5. The $ variables in my custom macros were getting stripped out too. Initially thought it was a plugin compatibility issue, but after checking the config file as you mention...