I did check the manuals and did run some tests. I am just looking for a simple explanation. If I have a host in Icinga that has host address (ie ip) and hostname that has a ping check for example. Will it use IP first and then use hostname after if no reply or will it use the host name?
If i make a host called erfhkejrfhkjerhfkerfer and it has an ip entry, it is found OK and replies to the ping.
The basic question is if ip and hostname are present, which are used first by Icinga for a ping check?