Nagios Support Forum

Hello

I am fairly new to Nagios and still reading through the manuals. however, I have a system described below that I need to configure and would appreciate any pointers on how to do this.

There are two hosts, Host A and Host B. Both are online and connected to two other hosts providing radar, Radar A and Radar B.
Host A acts as the master and receives data from Radar A and Radar B. it is configured as the parent of Radar A and Radar B. Host B also has access to Radar A and Radar B and will receive data if Host A goes down.

is it possible to automatically change the parent of Radar A and Radar B to Host B if Host A becomes unavailable? Monitoring is done on both Hosts A/B and Radar A/B. I want to monitor Radar A and Radar B via Host B if Host A becomes unavailable.
What is the best way to do this.

regards Jeremy

You could use an event handler to effectively disable host A when it goes into a critical state, and then enable checking on B, and an event handler on host B to disable it and activate A when it goes into a critical state. This might also be a solution for you:

http://nagios.sourceforge.net/docs/3_0/clusters.html