I have Icinga installed on a machine with the basic configuration and we just use the Host Status Detail screen with a big monitor only to know when a machine is down due to network/eletrical problems. But it takes too long to update the ping times (+1min). I'd like to know how to decrease this ping time to 30 seconds to all machines (just 15 machines) and how to decrease the refresh display time from the webpage.
I did play with some values, mainly interval_length inside icinga.cfg (60 to 30) but with no effect.