I'm considering implementing a distributed nagios monitoring system for our ~300 host DCN network. It is likely to grow considerably over the next few years so a scalable solution is required.
I was wondering if a slave host will 'save' its monitoring data if its connectivity to the master host is temporarily lost, and then update the master once connectivity has resumed.
Perhaps my question is best illustrated with an example:
Suppose we have several network sites which are all self contained (have their own firewall). If we have a nagios slave in each of these sites monitoring the local hosts, but then WAN connectivity fails, and the slaves cannot communicate with the master (but can all still monitor their own LANs), will all the monitoring data collected during the WAN dropout be 'saved' and uploaded to the master once connectivity is resumed, or will all that data be 'lost'?
I hope that's clear.
Of course I could set this up and test it, but asking might save me some considerable time.
Thanks in advance,