Nagios Support Forum

I am currently running a Nagios XI server 5.7.3 with 3487 service checks over 341 hosts.

This is running on a KVM, what is the recommended CPU/RAM for this machine?

Nagios is currently flagging at a 6.5 CPU avg/15 over 6 CPUs

Hardware requirements are at https://support.nagios.com/kb/article.p ... ategory=83. You're performance may vary, but 4 CPU cores and 8GB of memory is a good place to start based on the numbers provided. https://assets.nagios.com/downloads/nag ... ios-XI.pdf covers tweaks to help with performance.