Nagios Hosts Down but they are not

Nagios Nagios Configuration support
1

I am trying to set up Nagios on a server all hosts appear to be down, with this in the event log:

It’s doing this for all hosts I’m monitoring. However, running this command directly from SSH is working just fine:

I’ve also set up Nagios on other servers and they are all ok. Anyone know what’s wrong and how to fix this?

2

try running check_ping with the correct parameters (as your config files define it) as user nagios on the server and see if that works.