Hello to all, i'm new to nagios and try to refresh my Linux knowlege, ok my english isn't that good too. How should i begin? I'm running nagios 4.11core on Ubuntu 15.10. (http://www.unixmen.com/how-to-install-nagios-core-4-1-1-in-ubuntu-15-10/) Check host alive is checking all the Server i want to M...