Nagios Status WARNING (could not fetch information from serv

[M.MA89]

Hello,

I have installed on a test server via Linux Nagios on my computer. However, it does not work properly. The status is usually WARNING (can not be fetch information from server), or it always changes between WARNING, UNKNOW, CRITICAL and sometimes OK.
What could be the problem ?

Hopefully someone has an answer for me. Would be very happy.

[mcapra]

Are you seeing this error on a specific host? If so, how are you monitoring that host (NRPE, Passive, SNMP, etc). Did you use a specific configuration wizard to monitor this host?