Nagios Support Forum

I am being asked to size a server for 9000 hosts, using the BD in MySQL.

We want to monitor the health of the equipment such as CPU, Memory, Disk Usage, PING, and 5 more processes of the applications of said equipment.

Someone will have some calculation or reference to perform this calculation.

I appreciate the support and remain in order.

(total hosts)x(estimated services per host) = total hosts service checks expected.

9000x9=81000 total expected combined checks.

As it entirely depends on what plugins and protocols you will be using you would likely want to run at least 16 to 32GB RAM, 250GB HDD (FAST STORAGE IS IMPORTANT), 4-8CPU to start but really, you'll end up likely using mod_gearman (or other load-mitigating things such as passive checks) but it depends on a lot of factors unique to your environment.

http://sites.box293.com/nagios/guides/mod-gearman

RAMDisk, this is for Core (DONT RUN THE SCRIPT, IT'S FOR XI) but it'll give you and idea on how to set the Core specific stuff and manually set it up:

https://assets.nagios.com/downloads/nag ... giosXI.pdf