Page 2 of 2
Re: Error on manual install
Posted: Tue Jan 14, 2014 8:36 am
by DanZ
To better understand how to size a XI install. If the goals is to monitor 50,000 servers, how big of a server do I need to run XI, ( in terms of CPU, Memory, storge). Also can XI be congiure as active/ active HA?
Re: Error on manual install
Posted: Tue Jan 14, 2014 11:25 am
by tmcdonald
http://assets.nagios.com/downloads/nagi ... ements.pdf
should give you a decent idea that you can extrapolate from. CPU tends to be more of an issue than memory, so I'd keep that in mind. For 50,000 servers, I assume you mean hosts and not services? If that is the case, and assuming as well that most servers will likely have more than one service, we're pushing the envelope for a single server. 16 cores and 24GB of RAM would not be a bad place to start, though I personally have not worked with or even seen an installation this big.
Have you considered splitting the checks onto multiple Nagios XI installs? Usually when you get this big if you don't have problems with check speed, you'll have logistical problems of organization. Also, each apply config is going to take a long time as more and more things are added.
As for HA, most solutions are going to be at the VM level. There is some master/slave sort of setup where the slave monitors the master and when it goes down, takes over the checks. This requires a bit more configuration beforehand. What were you thinking?